diff options
Diffstat (limited to 'drivers/acpi')
50 files changed, 941 insertions, 850 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index 431f8b439553..7ec7d88c5999 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -266,6 +266,7 @@ config ACPI_DEBUG_FUNC_TRACE config ACPI_PCI_SLOT tristate "PCI slot detection driver" + depends on SYSFS default n help This driver creates entries in /sys/bus/pci/slots/ for all PCI diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 88e42abf5d88..0df8fcb687d6 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -61,6 +61,7 @@ static int acpi_ac_open_fs(struct inode *inode, struct file *file); static int acpi_ac_add(struct acpi_device *device); static int acpi_ac_remove(struct acpi_device *device, int type); static int acpi_ac_resume(struct acpi_device *device); +static void acpi_ac_notify(struct acpi_device *device, u32 event); static const struct acpi_device_id ac_device_ids[] = { {"ACPI0003", 0}, @@ -72,10 +73,12 @@ static struct acpi_driver acpi_ac_driver = { .name = "ac", .class = ACPI_AC_CLASS, .ids = ac_device_ids, + .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, .ops = { .add = acpi_ac_add, .remove = acpi_ac_remove, .resume = acpi_ac_resume, + .notify = acpi_ac_notify, }, }; @@ -220,16 +223,14 @@ static int acpi_ac_remove_fs(struct acpi_device *device) Driver Model -------------------------------------------------------------------------- */ -static void acpi_ac_notify(acpi_handle handle, u32 event, void *data) +static void acpi_ac_notify(struct acpi_device *device, u32 event) { - struct acpi_ac *ac = data; - struct acpi_device *device = NULL; + struct acpi_ac *ac = acpi_driver_data(device); if (!ac) return; - device = ac->device; switch (event) { default: ACPI_DEBUG_PRINT((ACPI_DB_INFO, @@ -253,7 +254,6 @@ static void acpi_ac_notify(acpi_handle handle, u32 event, void *data) static int acpi_ac_add(struct acpi_device *device) { int result = 0; - acpi_status status = AE_OK; struct acpi_ac *ac = NULL; @@ -286,13 +286,6 @@ static int acpi_ac_add(struct acpi_device *device) ac->charger.get_property = get_ac_property; power_supply_register(&ac->device->dev, &ac->charger); #endif - status = acpi_install_notify_handler(device->handle, - ACPI_ALL_NOTIFY, acpi_ac_notify, - ac); - if (ACPI_FAILURE(status)) { - result = -ENODEV; - goto end; - } printk(KERN_INFO PREFIX "%s [%s] (%s)\n", acpi_device_name(device), acpi_device_bid(device), @@ -328,7 +321,6 @@ static int acpi_ac_resume(struct acpi_device *device) static int acpi_ac_remove(struct acpi_device *device, int type) { - acpi_status status = AE_OK; struct acpi_ac *ac = NULL; @@ -337,8 +329,6 @@ static int acpi_ac_remove(struct acpi_device *device, int type) ac = acpi_driver_data(device); - status = acpi_remove_notify_handler(device->handle, - ACPI_ALL_NOTIFY, acpi_ac_notify); #ifdef CONFIG_ACPI_SYSFS_POWER if (ac->charger.dev) power_supply_unregister(&ac->charger); diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index 07e20135f01b..0bba148a2c61 100644 --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -139,7 +139,7 @@ acpi_status acpi_ev_initialize_op_regions(void); acpi_status acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, u32 function, - acpi_physical_address address, + u32 region_offset, u32 bit_width, acpi_integer * value); acpi_status diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 16e5210ae936..3d87362d17ed 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -362,9 +362,6 @@ extern u8 acpi_gbl_method_executing; extern u8 acpi_gbl_abort_method; extern u8 acpi_gbl_db_terminate_threads; -ACPI_EXTERN int optind; -ACPI_EXTERN char *optarg; - ACPI_EXTERN u8 acpi_gbl_db_opt_tables; ACPI_EXTERN u8 acpi_gbl_db_opt_stats; ACPI_EXTERN u8 acpi_gbl_db_opt_ini_methods; diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h index 2ec394a328e9..ee986edfa0da 100644 --- a/drivers/acpi/acpica/aclocal.h +++ b/drivers/acpi/acpica/aclocal.h @@ -205,6 +205,7 @@ struct acpi_namespace_node { #define ANOBJ_METHOD_LOCAL 0x08 /* Node is a method local */ #define ANOBJ_SUBTREE_HAS_INI 0x10 /* Used to optimize device initialization */ #define ANOBJ_EVALUATED 0x20 /* Set on first evaluation of node */ +#define ANOBJ_ALLOCATED_BUFFER 0x40 /* Method AML buffer is dynamic (install_method) */ #define ANOBJ_IS_EXTERNAL 0x08 /* i_aSL only: This object created via External() */ #define ANOBJ_METHOD_NO_RETVAL 0x10 /* i_aSL only: Method has no return value */ @@ -788,11 +789,14 @@ struct acpi_bit_register_info { /* For control registers, both ignored and reserved bits must be preserved */ /* - * The ACPI spec says to ignore PM1_CTL.SCI_EN (bit 0) - * but we need to be able to write ACPI_BITREG_SCI_ENABLE directly - * as a BIOS workaround on some machines. + * For PM1 control, the SCI enable bit (bit 0, SCI_EN) is defined by the + * ACPI specification to be a "preserved" bit - "OSPM always preserves this + * bit position", section 4.7.3.2.1. However, on some machines the OS must + * write a one to this bit after resume for the machine to work properly. + * To enable this, we no longer attempt to preserve this bit. No machines + * are known to fail if the bit is not preserved. (May 2009) */ -#define ACPI_PM1_CONTROL_IGNORED_BITS 0x0200 /* Bits 9 */ +#define ACPI_PM1_CONTROL_IGNORED_BITS 0x0200 /* Bit 9 */ #define ACPI_PM1_CONTROL_RESERVED_BITS 0xC1F8 /* Bits 14-15, 3-8 */ #define ACPI_PM1_CONTROL_PRESERVED_BITS \ (ACPI_PM1_CONTROL_IGNORED_BITS | ACPI_PM1_CONTROL_RESERVED_BITS) diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h index 46cb5b46d280..94cdc2b8cb93 100644 --- a/drivers/acpi/acpica/acnamesp.h +++ b/drivers/acpi/acpica/acnamesp.h @@ -99,10 +99,19 @@ acpi_ns_walk_namespace(acpi_object_type type, acpi_walk_callback user_function, void *context, void **return_value); -struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type, struct acpi_namespace_node - *parent, struct acpi_namespace_node +struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node + *parent, + struct acpi_namespace_node *child); +struct acpi_namespace_node *acpi_ns_get_next_node_typed(acpi_object_type type, + struct + acpi_namespace_node + *parent, + struct + acpi_namespace_node + *child); + /* * nsparse - table parsing */ diff --git a/drivers/acpi/acpica/amlcode.h b/drivers/acpi/acpica/amlcode.h index ff851c5df698..067f967eb389 100644 --- a/drivers/acpi/acpica/amlcode.h +++ b/drivers/acpi/acpica/amlcode.h @@ -483,7 +483,7 @@ typedef enum { #define AML_METHOD_ARG_COUNT 0x07 #define AML_METHOD_SERIALIZED 0x08 -#define AML_METHOD_SYNCH_LEVEL 0xF0 +#define AML_METHOD_SYNC_LEVEL 0xF0 /* METHOD_FLAGS_ARG_COUNT is not used internally, define additional flags */ diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c index dab3f48f0b42..02e6caad4a76 100644 --- a/drivers/acpi/acpica/dsobject.c +++ b/drivers/acpi/acpica/dsobject.c @@ -734,7 +734,8 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, /* Local ID (0-7) is (AML opcode - base AML_LOCAL_OP) */ - obj_desc->reference.value = opcode - AML_LOCAL_OP; + obj_desc->reference.value = + ((u32)opcode) - AML_LOCAL_OP; obj_desc->reference.class = ACPI_REFCLASS_LOCAL; #ifndef ACPI_NO_METHOD_EXECUTION @@ -754,7 +755,7 @@ acpi_ds_init_object_from_op(struct acpi_walk_state *walk_state, /* Arg ID (0-6) is (AML opcode - base AML_ARG_OP) */ - obj_desc->reference.value = opcode - AML_ARG_OP; + obj_desc->reference.value = ((u32)opcode) - AML_ARG_OP; obj_desc->reference.class = ACPI_REFCLASS_ARG; #ifndef ACPI_NO_METHOD_EXECUTION diff --git a/drivers/acpi/acpica/dsopcode.c b/drivers/acpi/acpica/dsopcode.c index b4c87b5053e6..584d766e6f12 100644 --- a/drivers/acpi/acpica/dsopcode.c +++ b/drivers/acpi/acpica/dsopcode.c @@ -1386,14 +1386,19 @@ acpi_ds_exec_end_control_op(struct acpi_walk_state * walk_state, case AML_BREAK_POINT_OP: - /* Call up to the OS service layer to handle this */ - - status = - acpi_os_signal(ACPI_SIGNAL_BREAKPOINT, - "Executed AML Breakpoint opcode"); + /* + * Set the single-step flag. This will cause the debugger (if present) + * to break to the console within the AML debugger at the start of the + * next AML instruction. + */ + ACPI_DEBUGGER_EXEC(acpi_gbl_cm_single_step = TRUE); + ACPI_DEBUGGER_EXEC(acpi_os_printf + ("**break** Executed AML BreakPoint opcode\n")); - /* If and when it returns, all done. */ + /* Call to the OSL in case OS wants a piece of the action */ + status = acpi_os_signal(ACPI_SIGNAL_BREAKPOINT, + "Executed AML Breakpoint opcode"); break; case AML_BREAK_OP: diff --git a/drivers/acpi/acpica/dswstate.c b/drivers/acpi/acpica/dswstate.c index 40f92bf7dce5..e46c821cf572 100644 --- a/drivers/acpi/acpica/dswstate.c +++ b/drivers/acpi/acpica/dswstate.c @@ -102,7 +102,7 @@ acpi_ds_result_pop(union acpi_operand_object **object, /* Return object of the top element and clean that top element result stack */ walk_state->result_count--; - index = walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM; + index = (u32)walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM; *object = state->results.obj_desc[index]; if (!*object) { @@ -186,7 +186,7 @@ acpi_ds_result_push(union acpi_operand_object * object, /* Assign the address of object to the top free element of result stack */ - index = walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM; + index = (u32)walk_state->result_count % ACPI_RESULTS_FRAME_OBJ_NUM; state->results.obj_desc[index] = object; walk_state->result_count++; diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index 538d63264555..98c7f9c62653 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -275,7 +275,7 @@ acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function) * * PARAMETERS: region_obj - Internal region object * Function - Read or Write operation - * Address - Where in the space to read or write + * region_offset - Where in the region to read or write * bit_width - Field width in bits (8, 16, 32, or 64) * Value - Pointer to in or out value, must be * full 64-bit acpi_integer @@ -290,7 +290,7 @@ acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function) acpi_status acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, u32 function, - acpi_physical_address address, + u32 region_offset, u32 bit_width, acpi_integer * value) { acpi_status status; @@ -396,7 +396,8 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, "Handler %p (@%p) Address %8.8X%8.8X [%s]\n", ®ion_obj->region.handler->address_space, handler, - ACPI_FORMAT_NATIVE_UINT(address), + ACPI_FORMAT_NATIVE_UINT(region_obj->region.address + + region_offset), acpi_ut_get_region_name(region_obj->region. space_id))); @@ -412,8 +413,9 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, /* Call the handler */ - status = handler(function, address, bit_width, value, - handler_desc->address_space.context, + status = handler(function, + (region_obj->region.address + region_offset), + bit_width, value, handler_desc->address_space.context, region_obj2->extra.region_context); if (ACPI_FAILURE(status)) { diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c index d0a080747ec3..4721f58fe42c 100644 --- a/drivers/acpi/acpica/evxfevnt.c +++ b/drivers/acpi/acpica/evxfevnt.c @@ -51,7 +51,7 @@ ACPI_MODULE_NAME("evxfevnt") /* Local prototypes */ -acpi_status +static acpi_status acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info, struct acpi_gpe_block_info *gpe_block, void *context); @@ -785,7 +785,7 @@ ACPI_EXPORT_SYMBOL(acpi_get_gpe_device) * block device. NULL if the GPE is one of the FADT-defined GPEs. * ******************************************************************************/ -acpi_status +static acpi_status acpi_ev_get_gpe_device(struct acpi_gpe_xrupt_info *gpe_xrupt_info, struct acpi_gpe_block_info *gpe_block, void *context) { diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c index 3deb20a126b2..277fd609611a 100644 --- a/drivers/acpi/acpica/exconfig.c +++ b/drivers/acpi/acpica/exconfig.c @@ -47,6 +47,7 @@ #include "acnamesp.h" #include "actables.h" #include "acdispat.h" +#include "acevents.h" #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME("exconfig") @@ -57,6 +58,10 @@ acpi_ex_add_table(u32 table_index, struct acpi_namespace_node *parent_node, union acpi_operand_object **ddb_handle); +static acpi_status +acpi_ex_region_read(union acpi_operand_object *obj_desc, + u32 length, u8 *buffer); + /******************************************************************************* * * FUNCTION: acpi_ex_add_table @@ -91,6 +96,7 @@ acpi_ex_add_table(u32 table_index, /* Init the table handle */ + obj_desc->common.flags |= AOPOBJ_DATA_VALID; obj_desc->reference.class = ACPI_REFCLASS_TABLE; *ddb_handle = obj_desc; @@ -229,6 +235,8 @@ acpi_ex_load_table_op(struct acpi_walk_state *walk_state, walk_state); if (ACPI_FAILURE(status)) { (void)acpi_ex_unload_table(ddb_handle); + + acpi_ut_remove_reference(ddb_handle); return_ACPI_STATUS(status); } } @@ -254,6 +262,47 @@ acpi_ex_load_table_op(struct acpi_walk_state *walk_state, /******************************************************************************* * + * FUNCTION: acpi_ex_region_read + * + * PARAMETERS: obj_desc - Region descriptor + * Length - Number of bytes to read + * Buffer - Pointer to where to put the data + * + * RETURN: Status + * + * DESCRIPTION: Read data from an operation region. The read starts from the + * beginning of the region. + * + ******************************************************************************/ + +static acpi_status +acpi_ex_region_read(union acpi_operand_object *obj_desc, u32 length, u8 *buffer) +{ + acpi_status status; + acpi_integer value; + u32 region_offset = 0; + u32 i; + + /* Bytewise reads */ + + for (i = 0; i < length; i++) { + status = acpi_ev_address_space_dispatch(obj_desc, ACPI_READ, + region_offset, 8, + &value); + if (ACPI_FAILURE(status)) { + return status; + } + + *buffer = (u8)value; + buffer++; + region_offset++; + } + + return AE_OK; +} + +/******************************************************************************* + * * FUNCTION: acpi_ex_load_op * * PARAMETERS: obj_desc - Region or Buffer/Field where the table will be @@ -314,18 +363,23 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc, } } - /* - * Map the table header and get the actual table length. The region - * length is not guaranteed to be the same as the table length. - */ - table = acpi_os_map_memory(obj_desc->region.address, - sizeof(struct acpi_table_header)); + /* Get the table header first so we can get the table length */ + + table = ACPI_ALLOCATE(sizeof(struct acpi_table_header)); if (!table) { return_ACPI_STATUS(AE_NO_MEMORY); } + status = + acpi_ex_region_read(obj_desc, + sizeof(struct acpi_table_header), + ACPI_CAST_PTR(u8, table)); length = table->length; - acpi_os_unmap_memory(table, sizeof(struct acpi_table_header)); + ACPI_FREE(table); + + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } /* Must have at least an ACPI table header */ @@ -334,10 +388,19 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc, } /* - * The memory region is not guaranteed to remain stable and we must - * copy the table to a local buffer. For example, the memory region - * is corrupted after suspend on some machines. Dynamically loaded - * tables are usually small, so this overhead is minimal. + * The original implementation simply mapped the table, with no copy. + * However, the memory region is not guaranteed to remain stable and + * we must copy the table to a local buffer. For example, the memory + * region is corrupted after suspend on some machines. Dynamically + * loaded tables are usually small, so this overhead is minimal. + * + * The latest implementation (5/2009) does not use a mapping at all. + * We use the low-level operation region interface to read the table + * instead of the obvious optimization of using a direct mapping. + * This maintains a consistent use of operation regions across the + * entire subsystem. This is important if additional processing must + * be performed in the (possibly user-installed) operation region + * handler. For example, acpi_exec and ASLTS depend on this. */ /* Allocate a buffer for the table */ @@ -347,17 +410,16 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc, return_ACPI_STATUS(AE_NO_MEMORY); } - /* Map the entire table and copy it */ + /* Read the entire table */ - table = acpi_os_map_memory(obj_desc->region.address, length); - if (!table) { + status = acpi_ex_region_read(obj_desc, length, + ACPI_CAST_PTR(u8, + table_desc.pointer)); + if (ACPI_FAILURE(status)) { ACPI_FREE(table_desc.pointer); - return_ACPI_STATUS(AE_NO_MEMORY); + return_ACPI_STATUS(status); } - ACPI_MEMCPY(table_desc.pointer, table, length); - acpi_os_unmap_memory(table, length); - table_desc.address = obj_desc->region.address; break; @@ -454,6 +516,10 @@ acpi_ex_load_op(union acpi_operand_object *obj_desc, return_ACPI_STATUS(status); } + /* Remove the reference by added by acpi_ex_store above */ + + acpi_ut_remove_reference(ddb_handle); + /* Invoke table handler if present */ if (acpi_gbl_table_handler) { @@ -495,13 +561,18 @@ acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle) /* * Validate the handle - * Although the handle is partially validated in acpi_ex_reconfiguration(), + * Although the handle is partially validated in acpi_ex_reconfiguration() * when it calls acpi_ex_resolve_operands(), the handle is more completely * validated here. + * + * Handle must be a valid operand object of type reference. Also, the + * ddb_handle must still be marked valid (table has not been previously + * unloaded) */ if ((!ddb_handle) || (ACPI_GET_DESCRIPTOR_TYPE(ddb_handle) != ACPI_DESC_TYPE_OPERAND) || - (ddb_handle->common.type != ACPI_TYPE_LOCAL_REFERENCE)) { + (ddb_handle->common.type != ACPI_TYPE_LOCAL_REFERENCE) || + (!(ddb_handle->common.flags & AOPOBJ_DATA_VALID))) { return_ACPI_STATUS(AE_BAD_PARAMETER); } @@ -509,6 +580,12 @@ acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle) table_index = table_desc->reference.value; + /* Ensure the table is still loaded */ + + if (!acpi_tb_is_table_loaded(table_index)) { + return_ACPI_STATUS(AE_NOT_EXIST); + } + /* Invoke table handler if present */ if (acpi_gbl_table_handler) { @@ -530,8 +607,10 @@ acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle) (void)acpi_tb_release_owner_id(table_index); acpi_tb_set_table_loaded_flag(table_index, FALSE); - /* Table unloaded, remove a reference to the ddb_handle object */ - - acpi_ut_remove_reference(ddb_handle); + /* + * Invalidate the handle. We do this because the handle may be stored + * in a named object and may not be actually deleted until much later. + */ + ddb_handle->common.flags &= ~AOPOBJ_DATA_VALID; return_ACPI_STATUS(AE_OK); } diff --git a/drivers/acpi/acpica/excreate.c b/drivers/acpi/acpica/excreate.c index a57ad2564ab0..02b25d233d99 100644 --- a/drivers/acpi/acpica/excreate.c +++ b/drivers/acpi/acpica/excreate.c @@ -502,7 +502,7 @@ acpi_ex_create_method(u8 * aml_start, * ACPI 2.0: sync_level = sync_level in method declaration */ obj_desc->method.sync_level = (u8) - ((method_flags & AML_METHOD_SYNCH_LEVEL) >> 4); + ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4); } /* Attach the new object to the method Node */ diff --git a/drivers/acpi/acpica/exdump.c b/drivers/acpi/acpica/exdump.c index 89d141fdae0b..ec524614e708 100644 --- a/drivers/acpi/acpica/exdump.c +++ b/drivers/acpi/acpica/exdump.c @@ -120,9 +120,11 @@ static struct acpi_exdump_info acpi_ex_dump_event[2] = { {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(event.os_semaphore), "OsSemaphore"} }; -static struct acpi_exdump_info acpi_ex_dump_method[8] = { +static struct acpi_exdump_info acpi_ex_dump_method[9] = { {ACPI_EXD_INIT, ACPI_EXD_TABLE_SIZE(acpi_ex_dump_method), NULL}, - {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.param_count), "ParamCount"}, + {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.method_flags), "Method Flags"}, + {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.param_count), + "Parameter Count"}, {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.sync_level), "Sync Level"}, {ACPI_EXD_POINTER, ACPI_EXD_OFFSET(method.mutex), "Mutex"}, {ACPI_EXD_UINT8, ACPI_EXD_OFFSET(method.owner_id), "Owner Id"}, diff --git a/drivers/acpi/acpica/exfldio.c b/drivers/acpi/acpica/exfldio.c index 99cee61e655d..d4075b821021 100644 --- a/drivers/acpi/acpica/exfldio.c +++ b/drivers/acpi/acpica/exfldio.c @@ -222,7 +222,7 @@ acpi_ex_access_region(union acpi_operand_object *obj_desc, { acpi_status status; union acpi_operand_object *rgn_desc; - acpi_physical_address address; + u32 region_offset; ACPI_FUNCTION_TRACE(ex_access_region); @@ -243,7 +243,7 @@ acpi_ex_access_region(union acpi_operand_object *obj_desc, * 3) The current offset into the field */ rgn_desc = obj_desc->common_field.region_obj; - address = rgn_desc->region.address + + region_offset = obj_desc->common_field.base_byte_offset + field_datum_byte_offset; if ((function & ACPI_IO_MASK) == ACPI_READ) { @@ -260,16 +260,18 @@ acpi_ex_access_region(union acpi_operand_object *obj_desc, obj_desc->common_field.access_byte_width, obj_desc->common_field.base_byte_offset, field_datum_byte_offset, ACPI_CAST_PTR(void, - address))); + (rgn_desc-> + region. + address + + region_offset)))); /* Invoke the appropriate address_space/op_region handler */ - status = acpi_ev_address_space_dispatch(rgn_desc, function, - address, - ACPI_MUL_8(obj_desc-> - common_field. - access_byte_width), - value); + status = + acpi_ev_address_space_dispatch(rgn_desc, function, region_offset, + ACPI_MUL_8(obj_desc->common_field. + access_byte_width), + value); if (ACPI_FAILURE(status)) { if (status == AE_NOT_IMPLEMENTED) { diff --git a/drivers/acpi/acpica/exmutex.c b/drivers/acpi/acpica/exmutex.c index d301c1f363ef..2f0114202b05 100644 --- a/drivers/acpi/acpica/exmutex.c +++ b/drivers/acpi/acpica/exmutex.c @@ -83,6 +83,15 @@ void acpi_ex_unlink_mutex(union acpi_operand_object *obj_desc) if (obj_desc->mutex.prev) { (obj_desc->mutex.prev)->mutex.next = obj_desc->mutex.next; + + /* + * Migrate the previous sync level associated with this mutex to the + * previous mutex on the list so that it may be preserved. This handles + * the case where several mutexes have been acquired at the same level, + * but are not released in opposite order. + */ + (obj_desc->mutex.prev)->mutex.original_sync_level = + obj_desc->mutex.original_sync_level; } else { thread->acquired_mutex_list = obj_desc->mutex.next; } @@ -349,6 +358,7 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc, struct acpi_walk_state *walk_state) { acpi_status status = AE_OK; + u8 previous_sync_level; ACPI_FUNCTION_TRACE(ex_release_mutex); @@ -373,11 +383,12 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc, walk_state->thread->thread_id) && (obj_desc != acpi_gbl_global_lock_mutex)) { ACPI_ERROR((AE_INFO, - "Thread %lX cannot release Mutex [%4.4s] acquired by thread %lX", - (unsigned long)walk_state->thread->thread_id, + "Thread %p cannot release Mutex [%4.4s] acquired by thread %p", + ACPI_CAST_PTR(void, walk_state->thread->thread_id), acpi_ut_get_node_name(obj_desc->mutex.node), - (unsigned long)obj_desc->mutex.owner_thread-> - thread_id)); + ACPI_CAST_PTR(void, + obj_desc->mutex.owner_thread-> + thread_id))); return_ACPI_STATUS(AE_AML_NOT_OWNER); } @@ -391,10 +402,14 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc, } /* - * The sync level of the mutex must be less than or equal to the current - * sync level + * The sync level of the mutex must be equal to the current sync level. In + * other words, the current level means that at least one mutex at that + * level is currently being held. Attempting to release a mutex of a + * different level can only mean that the mutex ordering rule is being + * violated. This behavior is clarified in ACPI 4.0 specification. */ - if (obj_desc->mutex.sync_level > walk_state->thread->current_sync_level) { + if (obj_desc->mutex.sync_level != + walk_state->thread->current_sync_level) { ACPI_ERROR((AE_INFO, "Cannot release Mutex [%4.4s], SyncLevel mismatch: mutex %d current %d", acpi_ut_get_node_name(obj_desc->mutex.node), @@ -403,14 +418,24 @@ acpi_ex_release_mutex(union acpi_operand_object *obj_desc, return_ACPI_STATUS(AE_AML_MUTEX_ORDER); } + /* + * Get the previous sync_level from the head of the acquired mutex list. + * This handles the case where several mutexes at the same level have been + * acquired, but are not released in reverse order. + */ + previous_sync_level = + walk_state->thread->acquired_mutex_list->mutex.original_sync_level; + status = acpi_ex_release_mutex_object(obj_desc); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } if (obj_desc->mutex.acquisition_depth == 0) { - /* Restore the original sync_level */ + /* Restore the previous sync_level */ - walk_state->thread->current_sync_level = - obj_desc->mutex.original_sync_level; + walk_state->thread->current_sync_level = previous_sync_level; } return_ACPI_STATUS(status); } diff --git a/drivers/acpi/acpica/exstore.c b/drivers/acpi/acpica/exstore.c index 90d606196c99..6efd07a4f779 100644 --- a/drivers/acpi/acpica/exstore.c +++ b/drivers/acpi/acpica/exstore.c @@ -193,10 +193,12 @@ acpi_ex_do_debug_object(union acpi_operand_object *source_desc, case ACPI_REFCLASS_TABLE: + /* Case for ddb_handle */ + ACPI_DEBUG_PRINT_RAW((ACPI_DB_DEBUG_OBJECT, "Table Index 0x%X\n", source_desc->reference.value)); - break; + return; default: break; diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c index 7b2fb602b5cb..23d5505cb1f7 100644 --- a/drivers/acpi/acpica/hwregs.c +++ b/drivers/acpi/acpica/hwregs.c @@ -81,9 +81,9 @@ acpi_status acpi_hw_clear_acpi_status(void) ACPI_FUNCTION_TRACE(hw_clear_acpi_status); - ACPI_DEBUG_PRINT((ACPI_DB_IO, "About to write %04X to %0llX\n", + ACPI_DEBUG_PRINT((ACPI_DB_IO, "About to write %04X to %8.8X%8.8X\n", ACPI_BITMASK_ALL_FIXED_STATUS, - acpi_gbl_xpm1a_status.address)); + ACPI_FORMAT_UINT64(acpi_gbl_xpm1a_status.address))); lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock); diff --git a/drivers/acpi/acpica/nsalloc.c b/drivers/acpi/acpica/nsalloc.c index aceb93111967..efc971ab7d65 100644 --- a/drivers/acpi/acpica/nsalloc.c +++ b/drivers/acpi/acpica/nsalloc.c @@ -334,9 +334,7 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node) /* Get the next node in this scope (NULL if none) */ - child_node = - acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node, - child_node); + child_node = acpi_ns_get_next_node(parent_node, child_node); if (child_node) { /* Found a child node - detach any attached object */ @@ -345,8 +343,7 @@ void acpi_ns_delete_namespace_subtree(struct acpi_namespace_node *parent_node) /* Check if this node has any children */ - if (acpi_ns_get_next_node - (ACPI_TYPE_ANY, child_node, NULL)) { + if (child_node->child) { /* * There is at least one child of this node, * visit the node @@ -432,9 +429,7 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id) * Get the next child of this parent node. When child_node is NULL, * the first child of the parent is returned */ - child_node = - acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node, - child_node); + child_node = acpi_ns_get_next_node(parent_node, child_node); if (deletion_node) { acpi_ns_delete_children(deletion_node); @@ -452,8 +447,7 @@ void acpi_ns_delete_namespace_by_owner(acpi_owner_id owner_id) /* Check if this node has any children */ - if (acpi_ns_get_next_node - (ACPI_TYPE_ANY, child_node, NULL)) { + if (child_node->child) { /* * There is at least one child of this node, * visit the node diff --git a/drivers/acpi/acpica/nsnames.c b/drivers/acpi/acpica/nsnames.c index ae3dc10a7e81..af8e6bcee07e 100644 --- a/drivers/acpi/acpica/nsnames.c +++ b/drivers/acpi/acpica/nsnames.c @@ -149,7 +149,7 @@ char *acpi_ns_get_external_pathname(struct acpi_namespace_node *node) name_buffer = ACPI_ALLOCATE_ZEROED(size); if (!name_buffer) { - ACPI_ERROR((AE_INFO, "Allocation failure")); + ACPI_ERROR((AE_INFO, "Could not allocate %u bytes", (u32)size)); return_PTR(NULL); } diff --git a/drivers/acpi/acpica/nsobject.c b/drivers/acpi/acpica/nsobject.c index 3eb20bfda9d8..60f3af08d28c 100644 --- a/drivers/acpi/acpica/nsobject.c +++ b/drivers/acpi/acpica/nsobject.c @@ -213,6 +213,15 @@ void acpi_ns_detach_object(struct acpi_namespace_node *node) return_VOID; } + if (node->flags & ANOBJ_ALLOCATED_BUFFER) { + + /* Free the dynamic aml buffer */ + + if (obj_desc->common.type == ACPI_TYPE_METHOD) { + ACPI_FREE(obj_desc->method.aml_start); + } + } + /* Clear the entry in all cases */ node->object = NULL; diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c index d9e8cbc6e679..7f8e066b12a3 100644 --- a/drivers/acpi/acpica/nspredef.c +++ b/drivers/acpi/acpica/nspredef.c @@ -144,7 +144,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node, pathname = acpi_ns_get_external_pathname(node); if (!pathname) { - pathname = ACPI_CAST_PTR(char, predefined->info.name); + return AE_OK; /* Could not get pathname, ignore */ } /* @@ -230,10 +230,7 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node, } exit: - if (pathname != predefined->info.name) { - ACPI_FREE(pathname); - } - + ACPI_FREE(pathname); return (status); } diff --git a/drivers/acpi/acpica/nssearch.c b/drivers/acpi/acpica/nssearch.c index f9b4f51bf8f2..7e865639a928 100644 --- a/drivers/acpi/acpica/nssearch.c +++ b/drivers/acpi/acpica/nssearch.c @@ -45,6 +45,10 @@ #include "accommon.h" #include "acnamesp.h" +#ifdef ACPI_ASL_COMPILER +#include "amlcode.h" +#endif + #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME("nssearch") diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c index 83e3aa6d4b9b..35539df5c75d 100644 --- a/drivers/acpi/acpica/nswalk.c +++ b/drivers/acpi/acpica/nswalk.c @@ -52,8 +52,7 @@ ACPI_MODULE_NAME("nswalk") * * FUNCTION: acpi_ns_get_next_node * - * PARAMETERS: Type - Type of node to be searched for - * parent_node - Parent node whose children we are + * PARAMETERS: parent_node - Parent node whose children we are * getting * child_node - Previous child that was found. * The NEXT child will be returned @@ -66,27 +65,68 @@ ACPI_MODULE_NAME("nswalk") * within Scope is returned. * ******************************************************************************/ -struct acpi_namespace_node *acpi_ns_get_next_node(acpi_object_type type, struct acpi_namespace_node - *parent_node, struct acpi_namespace_node +struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node + *parent_node, + struct acpi_namespace_node *child_node) { - struct acpi_namespace_node *next_node = NULL; - ACPI_FUNCTION_ENTRY(); if (!child_node) { /* It's really the parent's _scope_ that we want */ - next_node = parent_node->child; + return parent_node->child; } - else { - /* Start search at the NEXT node */ - - next_node = acpi_ns_get_next_valid_node(child_node); + /* + * Get the next node. + * + * If we are at the end of this peer list, return NULL + */ + if (child_node->flags & ANOBJ_END_OF_PEER_LIST) { + return NULL; } + /* Otherwise just return the next peer */ + + return child_node->peer; +} + +/******************************************************************************* + * + * FUNCTION: acpi_ns_get_next_node_typed + * + * PARAMETERS: Type - Type of node to be searched for + * parent_node - Parent node whose children we are + * getting + * child_node - Previous child that was found. + * The NEXT child will be returned + * + * RETURN: struct acpi_namespace_node - Pointer to the NEXT child or NULL if + * none is found. + * + * DESCRIPTION: Return the next peer node within the namespace. If Handle + * is valid, Scope is ignored. Otherwise, the first node + * within Scope is returned. + * + ******************************************************************************/ + +struct acpi_namespace_node *acpi_ns_get_next_node_typed(acpi_object_type type, + struct + acpi_namespace_node + *parent_node, + struct + acpi_namespace_node + *child_node) +{ + struct acpi_namespace_node *next_node = NULL; + + ACPI_FUNCTION_ENTRY(); + + next_node = acpi_ns_get_next_node(parent_node, child_node); + + /* If any type is OK, we are done */ if (type == ACPI_TYPE_ANY) { @@ -186,9 +226,7 @@ acpi_ns_walk_namespace(acpi_object_type type, /* Get the next node in this scope. Null if not found */ status = AE_OK; - child_node = - acpi_ns_get_next_node(ACPI_TYPE_ANY, parent_node, - child_node); + child_node = acpi_ns_get_next_node(parent_node, child_node); if (child_node) { /* Found next child, get the type if we are not searching for ANY */ @@ -269,8 +307,7 @@ acpi_ns_walk_namespace(acpi_object_type type, * function has specified that the maximum depth has been reached. */ if ((level < max_depth) && (status != AE_CTRL_DEPTH)) { - if (acpi_ns_get_next_node - (ACPI_TYPE_ANY, child_node, NULL)) { + if (child_node->child) { /* There is at least one child of this node, visit it */ diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c index 9589fea24997..f23593d6add4 100644 --- a/drivers/acpi/acpica/nsxfname.c +++ b/drivers/acpi/acpica/nsxfname.c @@ -45,6 +45,8 @@ #include <acpi/acpi.h> #include "accommon.h" #include "acnamesp.h" +#include "acparser.h" +#include "amlcode.h" #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME("nsxfname") @@ -358,3 +360,151 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer) } ACPI_EXPORT_SYMBOL(acpi_get_object_info) + +/****************************************************************************** + * + * FUNCTION: acpi_install_method + * + * PARAMETERS: Buffer - An ACPI table containing one control method + * + * RETURN: Status + * + * DESCRIPTION: Install a control method into the namespace. If the method + * name already exists in the namespace, it is overwritten. The + * input buffer must contain a valid DSDT or SSDT containing a + * single control method. + * + ******************************************************************************/ +acpi_status acpi_install_method(u8 *buffer) +{ + struct acpi_table_header *table = + ACPI_CAST_PTR(struct acpi_table_header, buffer); + u8 *aml_buffer; + u8 *aml_start; + char *path; + struct acpi_namespace_node *node; + union acpi_operand_object *method_obj; + struct acpi_parse_state parser_state; + u32 aml_length; + u16 opcode; + u8 method_flags; + acpi_status status; + + /* Parameter validation */ + + if (!buffer) { + return AE_BAD_PARAMETER; + } + + /* Table must be a DSDT or SSDT */ + + if (!ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) && + !ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) { + return AE_BAD_HEADER; + } + + /* First AML opcode in the table must be a control method */ + + parser_state.aml = buffer + sizeof(struct acpi_table_header); + opcode = acpi_ps_peek_opcode(&parser_state); + if (opcode != AML_METHOD_OP) { + return AE_BAD_PARAMETER; + } + + /* Extract method information from the raw AML */ + + parser_state.aml += acpi_ps_get_opcode_size(opcode); + parser_state.pkg_end = acpi_ps_get_next_package_end(&parser_state); + path = acpi_ps_get_next_namestring(&parser_state); + method_flags = *parser_state.aml++; + aml_start = parser_state.aml; + aml_length = ACPI_PTR_DIFF(parser_state.pkg_end, aml_start); + + /* + * Allocate resources up-front. We don't want to have to delete a new + * node from the namespace if we cannot allocate memory. + */ + aml_buffer = ACPI_ALLOCATE(aml_length); + if (!aml_buffer) { + return AE_NO_MEMORY; + } + + method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); + if (!method_obj) { + ACPI_FREE(aml_buffer); + return AE_NO_MEMORY; + } + + /* Lock namespace for acpi_ns_lookup, we may be creating a new node */ + + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + goto error_exit; + } + + /* The lookup either returns an existing node or creates a new one */ + + status = + acpi_ns_lookup(NULL, path, ACPI_TYPE_METHOD, ACPI_IMODE_LOAD_PASS1, + ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND, + NULL, &node); + + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + + if (ACPI_FAILURE(status)) { /* ns_lookup */ + if (status != AE_ALREADY_EXISTS) { + goto error_exit; + } + + /* Node existed previously, make sure it is a method node */ + + if (node->type != ACPI_TYPE_METHOD) { + status = AE_TYPE; + goto error_exit; + } + } + + /* Copy the method AML to the local buffer */ + + ACPI_MEMCPY(aml_buffer, aml_start, aml_length); + + /* Initialize the method object with the new method's information */ + + method_obj->method.aml_start = aml_buffer; + method_obj->method.aml_length = aml_length; + + method_obj->method.param_count = (u8) + (method_flags & AML_METHOD_ARG_COUNT); + + method_obj->method.method_flags = (u8) + (method_flags & ~AML_METHOD_ARG_COUNT); + + if (method_flags & AML_METHOD_SERIALIZED) { + method_obj->method.sync_level = (u8) + ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4); + } + + /* + * Now that it is complete, we can attach the new method object to + * the method Node (detaches/deletes any existing object) + */ + status = acpi_ns_attach_object(node, method_obj, ACPI_TYPE_METHOD); + + /* + * Flag indicates AML buffer is dynamic, must be deleted later. + * Must be set only after attach above. + */ + node->flags |= ANOBJ_ALLOCATED_BUFFER; + + /* Remove local reference to the method object */ + + acpi_ut_remove_reference(method_obj); + return status; + +error_exit: + + ACPI_FREE(aml_buffer); + ACPI_FREE(method_obj); + return status; +} +ACPI_EXPORT_SYMBOL(acpi_install_method) diff --git a/drivers/acpi/acpica/nsxfobj.c b/drivers/acpi/acpica/nsxfobj.c index 1c7efc15225f..4071bad4458e 100644 --- a/drivers/acpi/acpica/nsxfobj.c +++ b/drivers/acpi/acpica/nsxfobj.c @@ -162,6 +162,7 @@ ACPI_EXPORT_SYMBOL(acpi_get_type) acpi_status acpi_get_parent(acpi_handle handle, acpi_handle * ret_handle) { struct acpi_namespace_node *node; + struct acpi_namespace_node *parent_node; acpi_status status; if (!ret_handle) { @@ -189,12 +190,12 @@ acpi_status acpi_get_parent(acpi_handle handle, acpi_handle * ret_handle) /* Get the parent entry */ - *ret_handle = - acpi_ns_convert_entry_to_handle(acpi_ns_get_parent_node(node)); + parent_node = acpi_ns_get_parent_node(node); + *ret_handle = acpi_ns_convert_entry_to_handle(parent_node); /* Return exception if parent is null */ - if (!acpi_ns_get_parent_node(node)) { + if (!parent_node) { status = AE_NULL_ENTRY; } @@ -268,7 +269,7 @@ acpi_get_next_object(acpi_object_type type, /* Internal function does the real work */ - node = acpi_ns_get_next_node(type, parent_node, child_node); + node = acpi_ns_get_next_node_typed(type, parent_node, child_node); if (!node) { status = AE_NOT_FOUND; goto unlock_and_exit; diff --git a/drivers/acpi/acpica/rscalc.c b/drivers/acpi/acpica/rscalc.c index 88b5a2c4814d..3c4dcc3d1069 100644 --- a/drivers/acpi/acpica/rscalc.c +++ b/drivers/acpi/acpica/rscalc.c @@ -547,7 +547,7 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object, if (!package_element || (package_element->common.type != ACPI_TYPE_PACKAGE)) { - return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + return_ACPI_STATUS(AE_AML_OPERAND_TYPE); } /* @@ -593,9 +593,6 @@ acpi_rs_get_pci_routing_table_length(union acpi_operand_object *package_object, } else { temp_size_needed += acpi_ns_get_pathname_length((*sub_object_list)->reference.node); - if (!temp_size_needed) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } } } else { /* diff --git a/drivers/acpi/acpica/rsxface.c b/drivers/acpi/acpica/rsxface.c index 69a2aa5b5d83..395212bcd19b 100644 --- a/drivers/acpi/acpica/rsxface.c +++ b/drivers/acpi/acpica/rsxface.c @@ -338,13 +338,17 @@ acpi_resource_to_address64(struct acpi_resource *resource, switch (resource->type) { case ACPI_RESOURCE_TYPE_ADDRESS16: - address16 = (struct acpi_resource_address16 *)&resource->data; + address16 = + ACPI_CAST_PTR(struct acpi_resource_address16, + &resource->data); ACPI_COPY_ADDRESS(out, address16); break; case ACPI_RESOURCE_TYPE_ADDRESS32: - address32 = (struct acpi_resource_address32 *)&resource->data; + address32 = + ACPI_CAST_PTR(struct acpi_resource_address32, + &resource->data); ACPI_COPY_ADDRESS(out, address32); break; diff --git a/drivers/acpi/acpica/tbfadt.c b/drivers/acpi/acpica/tbfadt.c index 71e655d14cb0..82b02dcb942e 100644 --- a/drivers/acpi/acpica/tbfadt.c +++ b/drivers/acpi/acpica/tbfadt.c @@ -284,9 +284,9 @@ void acpi_tb_create_local_fadt(struct acpi_table_header *table, u32 length) if (length > sizeof(struct acpi_table_fadt)) { ACPI_WARNING((AE_INFO, "FADT (revision %u) is longer than ACPI 2.0 version, " - "truncating length 0x%X to 0x%zX", - table->revision, (unsigned)length, - sizeof(struct acpi_table_fadt))); + "truncating length 0x%X to 0x%X", + table->revision, length, + (u32)sizeof(struct acpi_table_fadt))); } /* Clear the entire local FADT */ @@ -441,7 +441,7 @@ static void acpi_tb_convert_fadt(void) &acpi_gbl_FADT, fadt_info_table [i].length), - address32); + (u64) address32); } } } @@ -469,7 +469,6 @@ static void acpi_tb_convert_fadt(void) static void acpi_tb_validate_fadt(void) { char *name; - u32 *address32; struct acpi_generic_address *address64; u8 length; u32 i; @@ -505,15 +504,12 @@ static void acpi_tb_validate_fadt(void) for (i = 0; i < ACPI_FADT_INFO_ENTRIES; i++) { /* - * Generate pointers to the 32-bit and 64-bit addresses, get the - * register length (width), and the register name + * Generate pointer to the 64-bit address, get the register + * length (width) and the register name */ address64 = ACPI_ADD_PTR(struct acpi_generic_address, &acpi_gbl_FADT, fadt_info_table[i].address64); - address32 = - ACPI_ADD_PTR(u32, &acpi_gbl_FADT, - fadt_info_table[i].address32); length = *ACPI_ADD_PTR(u8, &acpi_gbl_FADT, fadt_info_table[i].length); diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c index f865d5a096de..63e82329a9e8 100644 --- a/drivers/acpi/acpica/tbinstal.c +++ b/drivers/acpi/acpica/tbinstal.c @@ -472,7 +472,7 @@ acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index) * lock may block, and also since the execution of a namespace walk * must be allowed to use the interpreter. */ - acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); + (void)acpi_ut_release_mutex(ACPI_MTX_INTERPRETER); status = acpi_ut_acquire_write_lock(&acpi_gbl_namespace_rw_lock); acpi_ns_delete_namespace_by_owner(owner_id); diff --git a/drivers/acpi/acpica/utcopy.c b/drivers/acpi/acpica/utcopy.c index 919624f123d5..0f0c64bf8ac9 100644 --- a/drivers/acpi/acpica/utcopy.c +++ b/drivers/acpi/acpica/utcopy.c @@ -676,6 +676,7 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, { u16 reference_count; union acpi_operand_object *next_object; + acpi_status status; /* Save fields from destination that we don't want to overwrite */ @@ -768,6 +769,28 @@ acpi_ut_copy_simple_object(union acpi_operand_object *source_desc, } break; + /* + * For Mutex and Event objects, we cannot simply copy the underlying + * OS object. We must create a new one. + */ + case ACPI_TYPE_MUTEX: + + status = acpi_os_create_mutex(&dest_desc->mutex.os_mutex); + if (ACPI_FAILURE(status)) { + return status; + } + break; + + case ACPI_TYPE_EVENT: + + status = acpi_os_create_semaphore(ACPI_NO_UNIT_LIMIT, 0, + &dest_desc->event. + os_semaphore); + if (ACPI_FAILURE(status)) { + return status; + } + break; + default: /* Nothing to do for other simple objects */ break; diff --git a/drivers/acpi/acpica/utdebug.c b/drivers/acpi/acpica/utdebug.c index 38821f53042c..527d729f6815 100644 --- a/drivers/acpi/acpica/utdebug.c +++ b/drivers/acpi/acpica/utdebug.c @@ -179,9 +179,9 @@ acpi_debug_print(u32 requested_debug_level, if (thread_id != acpi_gbl_prev_thread_id) { if (ACPI_LV_THREADS & acpi_dbg_level) { acpi_os_printf - ("\n**** Context Switch from TID %lX to TID %lX ****\n\n", - (unsigned long)acpi_gbl_prev_thread_id, - (unsigned long)thread_id); + ("\n**** Context Switch from TID %p to TID %p ****\n\n", + ACPI_CAST_PTR(void, acpi_gbl_prev_thread_id), + ACPI_CAST_PTR(void, thread_id)); } acpi_gbl_prev_thread_id = thread_id; @@ -194,7 +194,7 @@ acpi_debug_print(u32 requested_debug_level, acpi_os_printf("%8s-%04ld ", module_name, line_number); if (ACPI_LV_THREADS & acpi_dbg_level) { - acpi_os_printf("[%04lX] ", (unsigned long)thread_id); + acpi_os_printf("[%p] ", ACPI_CAST_PTR(void, thread_id)); } acpi_os_printf("[%02ld] %-22.22s: ", diff --git a/drivers/acpi/acpica/utdelete.c b/drivers/acpi/acpica/utdelete.c index a5ee23bc4f55..bc1710315088 100644 --- a/drivers/acpi/acpica/utdelete.c +++ b/drivers/acpi/acpica/utdelete.c @@ -75,6 +75,7 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object) union acpi_operand_object *handler_desc; union acpi_operand_object *second_desc; union acpi_operand_object *next_desc; + union acpi_operand_object **last_obj_ptr; ACPI_FUNCTION_TRACE_PTR(ut_delete_internal_obj, object); @@ -223,6 +224,26 @@ static void acpi_ut_delete_internal_obj(union acpi_operand_object *object) */ handler_desc = object->region.handler; if (handler_desc) { + next_desc = + handler_desc->address_space.region_list; + last_obj_ptr = + &handler_desc->address_space.region_list; + + /* Remove the region object from the handler's list */ + + while (next_desc) { + if (next_desc == object) { + *last_obj_ptr = + next_desc->region.next; + break; + } + + /* Walk the linked list of handler */ + + last_obj_ptr = &next_desc->region.next; + next_desc = next_desc->region.next; + } + if (handler_desc->address_space.handler_flags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) { diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c index 1c9e250caefb..fbe782348b0b 100644 --- a/drivers/acpi/acpica/utmisc.c +++ b/drivers/acpi/acpica/utmisc.c @@ -1033,11 +1033,12 @@ acpi_error(const char *module_name, u32 line_number, const char *format, ...) { va_list args; - acpi_os_printf("ACPI Error (%s-%04d): ", module_name, line_number); + acpi_os_printf("ACPI Error: "); va_start(args, format); acpi_os_vprintf(format, args); - acpi_os_printf(" [%X]\n", ACPI_CA_VERSION); + acpi_os_printf(" %8.8X %s-%u\n", ACPI_CA_VERSION, module_name, + line_number); va_end(args); } @@ -1047,12 +1048,12 @@ acpi_exception(const char *module_name, { va_list args; - acpi_os_printf("ACPI Exception (%s-%04d): %s, ", module_name, - line_number, acpi_format_exception(status)); + acpi_os_printf("ACPI Exception: %s, ", acpi_format_exception(status)); va_start(args, format); acpi_os_vprintf(format, args); - acpi_os_printf(" [%X]\n", ACPI_CA_VERSION); + acpi_os_printf(" %8.8X %s-%u\n", ACPI_CA_VERSION, module_name, + line_number); va_end(args); } @@ -1061,11 +1062,12 @@ acpi_warning(const char *module_name, u32 line_number, const char *format, ...) { va_list args; - acpi_os_printf("ACPI Warning (%s-%04d): ", module_name, line_number); + acpi_os_printf("ACPI Warning: "); va_start(args, format); acpi_os_vprintf(format, args); - acpi_os_printf(" [%X]\n", ACPI_CA_VERSION); + acpi_os_printf(" %8.8X %s-%u\n", ACPI_CA_VERSION, module_name, + line_number); va_end(args); } @@ -1074,10 +1076,6 @@ acpi_info(const char *module_name, u32 line_number, const char *format, ...) { va_list args; - /* - * Removed module_name, line_number, and acpica version, not needed - * for info output - */ acpi_os_printf("ACPI: "); va_start(args, format); diff --git a/drivers/acpi/acpica/utmutex.c b/drivers/acpi/acpica/utmutex.c index 26c93a748e64..80bb65154117 100644 --- a/drivers/acpi/acpica/utmutex.c +++ b/drivers/acpi/acpica/utmutex.c @@ -230,17 +230,18 @@ acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id) if (acpi_gbl_mutex_info[i].thread_id == this_thread_id) { if (i == mutex_id) { ACPI_ERROR((AE_INFO, - "Mutex [%s] already acquired by this thread [%X]", + "Mutex [%s] already acquired by this thread [%p]", acpi_ut_get_mutex_name (mutex_id), - this_thread_id)); + ACPI_CAST_PTR(void, + this_thread_id))); return (AE_ALREADY_ACQUIRED); } ACPI_ERROR((AE_INFO, - "Invalid acquire order: Thread %X owns [%s], wants [%s]", - this_thread_id, + "Invalid acquire order: Thread %p owns [%s], wants [%s]", + ACPI_CAST_PTR(void, this_thread_id), acpi_ut_get_mutex_name(i), acpi_ut_get_mutex_name(mutex_id))); @@ -251,24 +252,24 @@ acpi_status acpi_ut_acquire_mutex(acpi_mutex_handle mutex_id) #endif ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, - "Thread %lX attempting to acquire Mutex [%s]\n", - (unsigned long)this_thread_id, + "Thread %p attempting to acquire Mutex [%s]\n", + ACPI_CAST_PTR(void, this_thread_id), acpi_ut_get_mutex_name(mutex_id))); status = acpi_os_acquire_mutex(acpi_gbl_mutex_info[mutex_id].mutex, ACPI_WAIT_FOREVER); if (ACPI_SUCCESS(status)) { ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, - "Thread %lX acquired Mutex [%s]\n", - (unsigned long)this_thread_id, + "Thread %p acquired Mutex [%s]\n", + ACPI_CAST_PTR(void, this_thread_id), acpi_ut_get_mutex_name(mutex_id))); acpi_gbl_mutex_info[mutex_id].use_count++; acpi_gbl_mutex_info[mutex_id].thread_id = this_thread_id; } else { ACPI_EXCEPTION((AE_INFO, status, - "Thread %lX could not acquire Mutex [%X]", - (unsigned long)this_thread_id, mutex_id)); + "Thread %p could not acquire Mutex [%X]", + ACPI_CAST_PTR(void, this_thread_id), mutex_id)); } return (status); @@ -293,9 +294,8 @@ acpi_status acpi_ut_release_mutex(acpi_mutex_handle mutex_id) ACPI_FUNCTION_NAME(ut_release_mutex); this_thread_id = acpi_os_get_thread_id(); - ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, - "Thread %lX releasing Mutex [%s]\n", - (unsigned long)this_thread_id, + ACPI_DEBUG_PRINT((ACPI_DB_MUTEX, "Thread %p releasing Mutex [%s]\n", + ACPI_CAST_PTR(void, this_thread_id), acpi_ut_get_mutex_name(mutex_id))); if (mutex_id > ACPI_MAX_MUTEX) { diff --git a/drivers/acpi/battery.c b/drivers/acpi/battery.c index b0de6312919a..58b4517ce712 100644 --- a/drivers/acpi/battery.c +++ b/drivers/acpi/battery.c @@ -796,13 +796,12 @@ static void acpi_battery_remove_fs(struct acpi_device *device) Driver Interface -------------------------------------------------------------------------- */ -static void acpi_battery_notify(acpi_handle handle, u32 event, void *data) +static void acpi_battery_notify(struct acpi_device *device, u32 event) { - struct acpi_battery *battery = data; - struct acpi_device *device; + struct acpi_battery *battery = acpi_driver_data(device); + if (!battery) return; - device = battery->device; acpi_battery_update(battery); acpi_bus_generate_proc_event(device, event, acpi_battery_present(battery)); @@ -819,7 +818,6 @@ static void acpi_battery_notify(acpi_handle handle, u32 event, void *data) static int acpi_battery_add(struct acpi_device *device) { int result = 0; - acpi_status status = 0; struct acpi_battery *battery = NULL; if (!device) return -EINVAL; @@ -834,22 +832,12 @@ static int acpi_battery_add(struct acpi_device *device) acpi_battery_update(battery); #ifdef CONFIG_ACPI_PROCFS_POWER result = acpi_battery_add_fs(device); - if (result) - goto end; #endif - status = acpi_install_notify_handler(device->handle, - ACPI_ALL_NOTIFY, - acpi_battery_notify, battery); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, "Installing notify handler")); - result = -ENODEV; - goto end; - } - printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", - ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), - device->status.battery_present ? "present" : "absent"); - end: - if (result) { + if (!result) { + printk(KERN_INFO PREFIX "%s Slot [%s] (battery %s)\n", + ACPI_BATTERY_DEVICE_NAME, acpi_device_bid(device), + device->status.battery_present ? "present" : "absent"); + } else { #ifdef CONFIG_ACPI_PROCFS_POWER acpi_battery_remove_fs(device); #endif @@ -860,15 +848,11 @@ static int acpi_battery_add(struct acpi_device *device) static int acpi_battery_remove(struct acpi_device *device, int type) { - acpi_status status = 0; struct acpi_battery *battery = NULL; if (!device || !acpi_driver_data(device)) return -EINVAL; battery = acpi_driver_data(device); - status = acpi_remove_notify_handler(device->handle, - ACPI_ALL_NOTIFY, - acpi_battery_notify); #ifdef CONFIG_ACPI_PROCFS_POWER acpi_battery_remove_fs(device); #endif @@ -896,10 +880,12 @@ static struct acpi_driver acpi_battery_driver = { .name = "battery", .class = ACPI_BATTERY_CLASS, .ids = battery_device_ids, + .flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS, .ops = { .add = acpi_battery_add, .resume = acpi_battery_resume, .remove = acpi_battery_remove, + .notify = acpi_battery_notify, }, }; diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index 09c69806c1fc..f6baa77deefb 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -192,6 +192,22 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "ESPRIMO Mobile V5505"), }, }, + { + .callback = dmi_disable_osi_vista, + .ident = "Sony VGN-NS10J_S", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), + DMI_MATCH(DMI_PRODUCT_NAME, "VGN-NS10J_S"), + }, + }, + { + .callback = dmi_disable_osi_vista, + .ident = "Sony VGN-SR290J", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), + DMI_MATCH(DMI_PRODUCT_NAME, "Sony VGN-SR290J"), + }, + }, /* * BIOS invocation of _OSI(Linux) is almost always a BIOS bug. diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index ae862f1798dc..2876fc70c3a9 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -450,18 +450,16 @@ int acpi_bus_receive_event(struct acpi_bus_event *event) Notification Handling -------------------------------------------------------------------------- */ -static int -acpi_bus_check_device(struct acpi_device *device, int *status_changed) +static void acpi_bus_check_device(acpi_handle handle) { - acpi_status status = 0; + struct acpi_device *device; + acpi_status status; struct acpi_device_status old_status; - + if (acpi_bus_get_device(handle, &device)) + return; if (!device) - return -EINVAL; - - if (status_changed) - *status_changed = 0; + return; old_status = device->status; @@ -471,22 +469,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed) */ if (device->parent && !device->parent->status.present) { device->status = device->parent->status; - if (STRUCT_TO_INT(old_status) != STRUCT_TO_INT(device->status)) { - if (status_changed) - *status_changed = 1; - } - return 0; + return; } status = acpi_bus_get_status(device); if (ACPI_FAILURE(status)) - return -ENODEV; + return; if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status)) - return 0; - - if (status_changed) - *status_changed = 1; + return; /* * Device Insertion/Removal @@ -498,33 +489,17 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n")); /* TBD: Handle device removal */ } - - return 0; } -static int acpi_bus_check_scope(struct acpi_device *device) +static void acpi_bus_check_scope(acpi_handle handle) { - int result = 0; - int status_changed = 0; - - - if (!device) - return -EINVAL; - /* Status Change? */ - result = acpi_bus_check_device(device, &status_changed); - if (result) - return result; - - if (!status_changed) - return 0; + acpi_bus_check_device(handle); /* * TBD: Enumerate child devices within this device's scope and * run acpi_bus_check_device()'s on them. */ - - return 0; } static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list); @@ -547,22 +522,19 @@ EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier); */ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) { - int result = 0; struct acpi_device *device = NULL; + struct acpi_driver *driver; + + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", + type, handle)); blocking_notifier_call_chain(&acpi_bus_notify_list, type, (void *)handle); - if (acpi_bus_get_device(handle, &device)) - return; - switch (type) { case ACPI_NOTIFY_BUS_CHECK: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received BUS CHECK notification for device [%s]\n", - device->pnp.bus_id)); - result = acpi_bus_check_scope(device); + acpi_bus_check_scope(handle); /* * TBD: We'll need to outsource certain events to non-ACPI * drivers via the device manager (device.c). @@ -570,10 +542,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) break; case ACPI_NOTIFY_DEVICE_CHECK: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received DEVICE CHECK notification for device [%s]\n", - device->pnp.bus_id)); - result = acpi_bus_check_device(device, NULL); + acpi_bus_check_device(handle); /* * TBD: We'll need to outsource certain events to non-ACPI * drivers via the device manager (device.c). @@ -581,44 +550,26 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) break; case ACPI_NOTIFY_DEVICE_WAKE: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received DEVICE WAKE notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; case ACPI_NOTIFY_EJECT_REQUEST: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received EJECT REQUEST notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received DEVICE CHECK LIGHT notification for device [%s]\n", - device->pnp.bus_id)); /* TBD: Exactly what does 'light' mean? */ break; case ACPI_NOTIFY_FREQUENCY_MISMATCH: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received FREQUENCY MISMATCH notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; case ACPI_NOTIFY_BUS_MODE_MISMATCH: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received BUS MODE MISMATCH notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; case ACPI_NOTIFY_POWER_FAULT: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received POWER FAULT notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; @@ -629,7 +580,13 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) break; } - return; + acpi_bus_get_device(handle, &device); + if (device) { + driver = device->driver; + if (driver && driver->ops.notify && + (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) + driver->ops.notify(device, type); + } } /* -------------------------------------------------------------------------- diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 8bd2c2a6884d..a8a5c29958c8 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -140,46 +140,6 @@ struct device *acpi_get_physical_device(acpi_handle handle) EXPORT_SYMBOL(acpi_get_physical_device); -/* ToDo: When a PCI bridge is found, return the PCI device behind the bridge - * This should work in general, but did not on a Lenovo T61 for the - * graphics card. But this must be fixed when the PCI device is - * bound and the kernel device struct is attached to the acpi device - * Note: A success call will increase reference count by one - * Do call put_device(dev) on the returned device then - */ -struct device *acpi_get_physical_pci_device(acpi_handle handle) -{ - struct device *dev; - long long device_id; - acpi_status status; - - status = - acpi_evaluate_integer(handle, "_ADR", NULL, &device_id); - - if (ACPI_FAILURE(status)) - return NULL; - - /* We need to attempt to determine whether the _ADR refers to a - PCI device or not. There's no terribly good way to do this, - so the best we can hope for is to assume that there'll never - be a device in the host bridge */ - if (device_id >= 0x10000) { - /* It looks like a PCI device. Does it exist? */ - dev = acpi_get_physical_device(handle); - } else { - /* It doesn't look like a PCI device. Does its parent - exist? */ - acpi_handle phandle; - if (acpi_get_parent(handle, &phandle)) - return NULL; - dev = acpi_get_physical_device(phandle); - } - if (!dev) - return NULL; - return dev; -} -EXPORT_SYMBOL(acpi_get_physical_pci_device); - static int acpi_bind_one(struct device *dev, acpi_handle handle) { struct acpi_device *acpi_dev; diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index d916bea729f1..71670719d61a 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -79,6 +79,7 @@ static acpi_osd_handler acpi_irq_handler; static void *acpi_irq_context; static struct workqueue_struct *kacpid_wq; static struct workqueue_struct *kacpi_notify_wq; +static struct workqueue_struct *kacpi_hotplug_wq; struct acpi_res_list { resource_size_t start; @@ -192,8 +193,10 @@ acpi_status acpi_os_initialize1(void) { kacpid_wq = create_singlethread_workqueue("kacpid"); kacpi_notify_wq = create_singlethread_workqueue("kacpi_notify"); + kacpi_hotplug_wq = create_singlethread_workqueue("kacpi_hotplug"); BUG_ON(!kacpid_wq); BUG_ON(!kacpi_notify_wq); + BUG_ON(!kacpi_hotplug_wq); return AE_OK; } @@ -206,6 +209,7 @@ acpi_status acpi_os_terminate(void) destroy_workqueue(kacpid_wq); destroy_workqueue(kacpi_notify_wq); + destroy_workqueue(kacpi_hotplug_wq); return AE_OK; } @@ -716,6 +720,7 @@ static acpi_status __acpi_os_execute(acpi_execute_type type, acpi_status status = AE_OK; struct acpi_os_dpc *dpc; struct workqueue_struct *queue; + work_func_t func; int ret; ACPI_DEBUG_PRINT((ACPI_DB_EXEC, "Scheduling function [%p(%p)] for deferred execution.\n", @@ -740,15 +745,17 @@ static acpi_status __acpi_os_execute(acpi_execute_type type, dpc->function = function; dpc->context = context; - if (!hp) { - INIT_WORK(&dpc->work, acpi_os_execute_deferred); - queue = (type == OSL_NOTIFY_HANDLER) ? - kacpi_notify_wq : kacpid_wq; - ret = queue_work(queue, &dpc->work); - } else { - INIT_WORK(&dpc->work, acpi_os_execute_hp_deferred); - ret = schedule_work(&dpc->work); - } + /* + * We can't run hotplug code in keventd_wq/kacpid_wq/kacpid_notify_wq + * because the hotplug code may call driver .remove() functions, + * which invoke flush_scheduled_work/acpi_os_wait_events_complete + * to flush these workqueues. + */ + queue = hp ? kacpi_hotplug_wq : + (type == OSL_NOTIFY_HANDLER ? kacpi_notify_wq : kacpid_wq); + func = hp ? acpi_os_execute_hp_deferred : acpi_os_execute_deferred; + INIT_WORK(&dpc->work, func); + ret = queue_work(queue, &dpc->work); if (!ret) { printk(KERN_ERR PREFIX diff --git a/drivers/acpi/pci_bind.c b/drivers/acpi/pci_bind.c index bc46de3d967f..a5a77b78a723 100644 --- a/drivers/acpi/pci_bind.c +++ b/drivers/acpi/pci_bind.c @@ -24,12 +24,7 @@ */ #include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> #include <linux/types.h> -#include <linux/proc_fs.h> -#include <linux/spinlock.h> -#include <linux/pm.h> #include <linux/pci.h> #include <linux/acpi.h> #include <acpi/acpi_bus.h> @@ -38,310 +33,76 @@ #define _COMPONENT ACPI_PCI_COMPONENT ACPI_MODULE_NAME("pci_bind"); -struct acpi_pci_data { - struct acpi_pci_id id; - struct pci_bus *bus; - struct pci_dev *dev; -}; - -static int acpi_pci_unbind(struct acpi_device *device); - -static void acpi_pci_data_handler(acpi_handle handle, u32 function, - void *context) -{ - - /* TBD: Anything we need to do here? */ - - return; -} - -/** - * acpi_get_pci_id - * ------------------ - * This function is used by the ACPI Interpreter (a.k.a. Core Subsystem) - * to resolve PCI information for ACPI-PCI devices defined in the namespace. - * This typically occurs when resolving PCI operation region information. - */ -acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id) +static int acpi_pci_unbind(struct acpi_device *device) { - int result = 0; - acpi_status status = AE_OK; - struct acpi_device *device = NULL; - struct acpi_pci_data *data = NULL; - - - if (!id) - return AE_BAD_PARAMETER; - - result = acpi_bus_get_device(handle, &device); - if (result) { - printk(KERN_ERR PREFIX - "Invalid ACPI Bus context for device %s\n", - acpi_device_bid(device)); - return AE_NOT_EXIST; - } - - status = acpi_get_data(handle, acpi_pci_data_handler, (void **)&data); - if (ACPI_FAILURE(status) || !data) { - ACPI_EXCEPTION((AE_INFO, status, - "Invalid ACPI-PCI context for device %s", - acpi_device_bid(device))); - return status; - } + struct pci_dev *dev; - *id = data->id; + dev = acpi_get_pci_dev(device->handle); + if (!dev || !dev->subordinate) + goto out; - /* - id->segment = data->id.segment; - id->bus = data->id.bus; - id->device = data->id.device; - id->function = data->id.function; - */ + acpi_pci_irq_del_prt(dev->subordinate); - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Device %s has PCI address %04x:%02x:%02x.%d\n", - acpi_device_bid(device), id->segment, id->bus, - id->device, id->function)); + device->ops.bind = NULL; + device->ops.unbind = NULL; - return AE_OK; +out: + pci_dev_put(dev); + return 0; } -EXPORT_SYMBOL(acpi_get_pci_id); - -int acpi_pci_bind(struct acpi_device *device) +static int acpi_pci_bind(struct acpi_device *device) { - int result = 0; acpi_status status; - struct acpi_pci_data *data; - struct acpi_pci_data *pdata; - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; acpi_handle handle; + struct pci_bus *bus; + struct pci_dev *dev; - if (!device || !device->parent) - return -EINVAL; - - data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer); - if (ACPI_FAILURE(status)) { - kfree(data); - return -ENODEV; - } - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI device [%s]...\n", - (char *)buffer.pointer)); - - /* - * Segment & Bus - * ------------- - * These are obtained via the parent device's ACPI-PCI context. - */ - status = acpi_get_data(device->parent->handle, acpi_pci_data_handler, - (void **)&pdata); - if (ACPI_FAILURE(status) || !pdata || !pdata->bus) { - ACPI_EXCEPTION((AE_INFO, status, - "Invalid ACPI-PCI context for parent device %s", - acpi_device_bid(device->parent))); - result = -ENODEV; - goto end; - } - data->id.segment = pdata->id.segment; - data->id.bus = pdata->bus->number; - - /* - * Device & Function - * ----------------- - * These are simply obtained from the device's _ADR method. Note - * that a value of zero is valid. - */ - data->id.device = device->pnp.bus_address >> 16; - data->id.function = device->pnp.bus_address & 0xFFFF; - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "...to %04x:%02x:%02x.%d\n", - data->id.segment, data->id.bus, data->id.device, - data->id.function)); - - /* - * TBD: Support slot devices (e.g. function=0xFFFF). - */ - - /* - * Locate PCI Device - * ----------------- - * Locate matching device in PCI namespace. If it doesn't exist - * this typically means that the device isn't currently inserted - * (e.g. docking station, port replicator, etc.). - */ - data->dev = pci_get_slot(pdata->bus, - PCI_DEVFN(data->id.device, data->id.function)); - if (!data->dev) { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Device %04x:%02x:%02x.%d not present in PCI namespace\n", - data->id.segment, data->id.bus, - data->id.device, data->id.function)); - result = -ENODEV; - goto end; - } - if (!data->dev->bus) { - printk(KERN_ERR PREFIX - "Device %04x:%02x:%02x.%d has invalid 'bus' field\n", - data->id.segment, data->id.bus, - data->id.device, data->id.function); - result = -ENODEV; - goto end; - } + dev = acpi_get_pci_dev(device->handle); + if (!dev) + return 0; /* - * PCI Bridge? - * ----------- - * If so, set the 'bus' field and install the 'bind' function to - * facilitate callbacks for all of its children. + * Install the 'bind' function to facilitate callbacks for + * children of the P2P bridge. */ - if (data->dev->subordinate) { + if (dev->subordinate) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device %04x:%02x:%02x.%d is a PCI bridge\n", - data->id.segment, data->id.bus, - data->id.device, data->id.function)); - data->bus = data->dev->subordinate; + pci_domain_nr(dev->bus), dev->bus->number, + PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn))); device->ops.bind = acpi_pci_bind; device->ops.unbind = acpi_pci_unbind; } /* - * Attach ACPI-PCI Context - * ----------------------- - * Thus binding the ACPI and PCI devices. - */ - status = acpi_attach_data(device->handle, acpi_pci_data_handler, data); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, - "Unable to attach ACPI-PCI context to device %s", - acpi_device_bid(device))); - result = -ENODEV; - goto end; - } - - /* - * PCI Routing Table - * ----------------- - * Evaluate and parse _PRT, if exists. This code is independent of - * PCI bridges (above) to allow parsing of _PRT objects within the - * scope of non-bridge devices. Note that _PRTs within the scope of - * a PCI bridge assume the bridge's subordinate bus number. + * Evaluate and parse _PRT, if exists. This code allows parsing of + * _PRT objects within the scope of non-bridge devices. Note that + * _PRTs within the scope of a PCI bridge assume the bridge's + * subordinate bus number. * * TBD: Can _PRTs exist within the scope of non-bridge PCI devices? */ status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle); - if (ACPI_SUCCESS(status)) { - if (data->bus) /* PCI-PCI bridge */ - acpi_pci_irq_add_prt(device->handle, data->id.segment, - data->bus->number); - else /* non-bridge PCI device */ - acpi_pci_irq_add_prt(device->handle, data->id.segment, - data->id.bus); - } - - end: - kfree(buffer.pointer); - if (result) { - pci_dev_put(data->dev); - kfree(data); - } - return result; -} - -static int acpi_pci_unbind(struct acpi_device *device) -{ - int result = 0; - acpi_status status; - struct acpi_pci_data *data; - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - - - if (!device || !device->parent) - return -EINVAL; - - status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer); if (ACPI_FAILURE(status)) - return -ENODEV; + goto out; - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Unbinding PCI device [%s]...\n", - (char *) buffer.pointer)); - kfree(buffer.pointer); + if (dev->subordinate) + bus = dev->subordinate; + else + bus = dev->bus; - status = - acpi_get_data(device->handle, acpi_pci_data_handler, - (void **)&data); - if (ACPI_FAILURE(status)) { - result = -ENODEV; - goto end; - } + acpi_pci_irq_add_prt(device->handle, bus); - status = acpi_detach_data(device->handle, acpi_pci_data_handler); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, - "Unable to detach data from device %s", - acpi_device_bid(device))); - result = -ENODEV; - goto end; - } - if (data->dev->subordinate) { - acpi_pci_irq_del_prt(data->id.segment, data->bus->number); - } - pci_dev_put(data->dev); - kfree(data); - - end: - return result; +out: + pci_dev_put(dev); + return 0; } -int -acpi_pci_bind_root(struct acpi_device *device, - struct acpi_pci_id *id, struct pci_bus *bus) +int acpi_pci_bind_root(struct acpi_device *device) { - int result = 0; - acpi_status status; - struct acpi_pci_data *data = NULL; - struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; - - if (!device || !id || !bus) { - return -EINVAL; - } - - data = kzalloc(sizeof(struct acpi_pci_data), GFP_KERNEL); - if (!data) - return -ENOMEM; - - data->id = *id; - data->bus = bus; device->ops.bind = acpi_pci_bind; device->ops.unbind = acpi_pci_unbind; - status = acpi_get_name(device->handle, ACPI_FULL_PATHNAME, &buffer); - if (ACPI_FAILURE(status)) { - kfree (data); - return -ENODEV; - } - - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Binding PCI root bridge [%s] to " - "%04x:%02x\n", (char *)buffer.pointer, - id->segment, id->bus)); - - status = acpi_attach_data(device->handle, acpi_pci_data_handler, data); - if (ACPI_FAILURE(status)) { - ACPI_EXCEPTION((AE_INFO, status, - "Unable to attach ACPI-PCI context to device %s", - (char *)buffer.pointer)); - result = -ENODEV; - goto end; - } - - end: - kfree(buffer.pointer); - if (result != 0) - kfree(data); - - return result; + return 0; } diff --git a/drivers/acpi/pci_irq.c b/drivers/acpi/pci_irq.c index 51b9f8280f88..b794eb88ab90 100644 --- a/drivers/acpi/pci_irq.c +++ b/drivers/acpi/pci_irq.c @@ -182,7 +182,7 @@ static void do_prt_fixups(struct acpi_prt_entry *entry, } } -static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus, +static int acpi_pci_irq_add_entry(acpi_handle handle, struct pci_bus *bus, struct acpi_pci_routing_table *prt) { struct acpi_prt_entry *entry; @@ -196,8 +196,8 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus, * 1=INTA, 2=INTB. We use the PCI encoding throughout, so convert * it here. */ - entry->id.segment = segment; - entry->id.bus = bus; + entry->id.segment = pci_domain_nr(bus); + entry->id.bus = bus->number; entry->id.device = (prt->address >> 16) & 0xFFFF; entry->pin = prt->pin + 1; @@ -242,7 +242,7 @@ static int acpi_pci_irq_add_entry(acpi_handle handle, int segment, int bus, return 0; } -int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus) +int acpi_pci_irq_add_prt(acpi_handle handle, struct pci_bus *bus) { acpi_status status; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; @@ -271,7 +271,7 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus) entry = buffer.pointer; while (entry && (entry->length > 0)) { - acpi_pci_irq_add_entry(handle, segment, bus, entry); + acpi_pci_irq_add_entry(handle, bus, entry); entry = (struct acpi_pci_routing_table *) ((unsigned long)entry + entry->length); } @@ -280,16 +280,17 @@ int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus) return 0; } -void acpi_pci_irq_del_prt(int segment, int bus) +void acpi_pci_irq_del_prt(struct pci_bus *bus) { struct acpi_prt_entry *entry, *tmp; printk(KERN_DEBUG "ACPI: Delete PCI Interrupt Routing Table for %04x:%02x\n", - segment, bus); + pci_domain_nr(bus), bus->number); spin_lock(&acpi_prt_lock); list_for_each_entry_safe(entry, tmp, &acpi_prt_list, list) { - if (segment == entry->id.segment && bus == entry->id.bus) { + if (pci_domain_nr(bus) == entry->id.segment + && bus->number == entry->id.bus) { list_del(&entry->list); kfree(entry); } @@ -401,7 +402,8 @@ int acpi_pci_irq_enable(struct pci_dev *dev) /* Interrupt Line values above 0xF are forbidden */ if (dev->irq > 0 && (dev->irq <= 0xF)) { printk(" - using IRQ %d\n", dev->irq); - acpi_register_gsi(dev->irq, ACPI_LEVEL_SENSITIVE, + acpi_register_gsi(&dev->dev, dev->irq, + ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW); return 0; } else { @@ -410,7 +412,7 @@ int acpi_pci_irq_enable(struct pci_dev *dev) } } - rc = acpi_register_gsi(gsi, triggering, polarity); + rc = acpi_register_gsi(&dev->dev, gsi, triggering, polarity); if (rc < 0) { dev_warn(&dev->dev, "PCI INT %c: failed to register GSI\n", pin_name(pin)); diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 196f97d00956..8a5bf3b356fa 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -63,9 +63,10 @@ static struct acpi_driver acpi_pci_root_driver = { struct acpi_pci_root { struct list_head node; - struct acpi_device * device; - struct acpi_pci_id id; + struct acpi_device *device; struct pci_bus *bus; + u16 segment; + u8 bus_nr; u32 osc_support_set; /* _OSC state of support bits */ u32 osc_control_set; /* _OSC state of control bits */ @@ -82,7 +83,7 @@ static DEFINE_MUTEX(osc_lock); int acpi_pci_register_driver(struct acpi_pci_driver *driver) { int n = 0; - struct list_head *entry; + struct acpi_pci_root *root; struct acpi_pci_driver **pptr = &sub_driver; while (*pptr) @@ -92,9 +93,7 @@ int acpi_pci_register_driver(struct acpi_pci_driver *driver) if (!driver->add) return 0; - list_for_each(entry, &acpi_pci_roots) { - struct acpi_pci_root *root; - root = list_entry(entry, struct acpi_pci_root, node); + list_for_each_entry(root, &acpi_pci_roots, node) { driver->add(root->device->handle); n++; } @@ -106,7 +105,7 @@ EXPORT_SYMBOL(acpi_pci_register_driver); void acpi_pci_unregister_driver(struct acpi_pci_driver *driver) { - struct list_head *entry; + struct acpi_pci_root *root; struct acpi_pci_driver **pptr = &sub_driver; while (*pptr) { @@ -120,28 +119,48 @@ void acpi_pci_unregister_driver(struct acpi_pci_driver *driver) if (!driver->remove) return; - list_for_each(entry, &acpi_pci_roots) { - struct acpi_pci_root *root; - root = list_entry(entry, struct acpi_pci_root, node); + list_for_each_entry(root, &acpi_pci_roots, node) driver->remove(root->device->handle); - } } EXPORT_SYMBOL(acpi_pci_unregister_driver); acpi_handle acpi_get_pci_rootbridge_handle(unsigned int seg, unsigned int bus) { - struct acpi_pci_root *tmp; + struct acpi_pci_root *root; - list_for_each_entry(tmp, &acpi_pci_roots, node) { - if ((tmp->id.segment == (u16) seg) && (tmp->id.bus == (u16) bus)) - return tmp->device->handle; - } + list_for_each_entry(root, &acpi_pci_roots, node) + if ((root->segment == (u16) seg) && (root->bus_nr == (u16) bus)) + return root->device->handle; return NULL; } EXPORT_SYMBOL_GPL(acpi_get_pci_rootbridge_handle); +/** + * acpi_is_root_bridge - determine whether an ACPI CA node is a PCI root bridge + * @handle - the ACPI CA node in question. + * + * Note: we could make this API take a struct acpi_device * instead, but + * for now, it's more convenient to operate on an acpi_handle. + */ +int acpi_is_root_bridge(acpi_handle handle) +{ + int ret; + struct acpi_device *device; + + ret = acpi_bus_get_device(handle, &device); + if (ret) + return 0; + + ret = acpi_match_device_ids(device, root_device_ids); + if (ret) + return 0; + else + return 1; +} +EXPORT_SYMBOL_GPL(acpi_is_root_bridge); + static acpi_status get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data) { @@ -161,19 +180,22 @@ get_root_bridge_busnr_callback(struct acpi_resource *resource, void *data) return AE_OK; } -static acpi_status try_get_root_bridge_busnr(acpi_handle handle, int *busnum) +static acpi_status try_get_root_bridge_busnr(acpi_handle handle, + unsigned long long *bus) { acpi_status status; + int busnum; - *busnum = -1; + busnum = -1; status = acpi_walk_resources(handle, METHOD_NAME__CRS, - get_root_bridge_busnr_callback, busnum); + get_root_bridge_busnr_callback, &busnum); if (ACPI_FAILURE(status)) return status; /* Check if we really get a bus number from _CRS */ - if (*busnum == -1) + if (busnum == -1) return AE_ERROR; + *bus = busnum; return AE_OK; } @@ -298,6 +320,7 @@ static acpi_status acpi_pci_osc_support(struct acpi_pci_root *root, u32 flags) static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle) { struct acpi_pci_root *root; + list_for_each_entry(root, &acpi_pci_roots, node) { if (root->device->handle == handle) return root; @@ -305,6 +328,87 @@ static struct acpi_pci_root *acpi_pci_find_root(acpi_handle handle) return NULL; } +struct acpi_handle_node { + struct list_head node; + acpi_handle handle; +}; + +/** + * acpi_get_pci_dev - convert ACPI CA handle to struct pci_dev + * @handle: the handle in question + * + * Given an ACPI CA handle, the desired PCI device is located in the + * list of PCI devices. + * + * If the device is found, its reference count is increased and this + * function returns a pointer to its data structure. The caller must + * decrement the reference count by calling pci_dev_put(). + * If no device is found, %NULL is returned. + */ +struct pci_dev *acpi_get_pci_dev(acpi_handle handle) +{ + int dev, fn; + unsigned long long adr; + acpi_status status; + acpi_handle phandle; + struct pci_bus *pbus; + struct pci_dev *pdev = NULL; + struct acpi_handle_node *node, *tmp; + struct acpi_pci_root *root; + LIST_HEAD(device_list); + + /* + * Walk up the ACPI CA namespace until we reach a PCI root bridge. + */ + phandle = handle; + while (!acpi_is_root_bridge(phandle)) { + node = kzalloc(sizeof(struct acpi_handle_node), GFP_KERNEL); + if (!node) + goto out; + + INIT_LIST_HEAD(&node->node); + node->handle = phandle; + list_add(&node->node, &device_list); + + status = acpi_get_parent(phandle, &phandle); + if (ACPI_FAILURE(status)) + goto out; + } + + root = acpi_pci_find_root(phandle); + if (!root) + goto out; + + pbus = root->bus; + + /* + * Now, walk back down the PCI device tree until we return to our + * original handle. Assumes that everything between the PCI root + * bridge and the device we're looking for must be a P2P bridge. + */ + list_for_each_entry(node, &device_list, node) { + acpi_handle hnd = node->handle; + status = acpi_evaluate_integer(hnd, "_ADR", NULL, &adr); + if (ACPI_FAILURE(status)) + goto out; + dev = (adr >> 16) & 0xffff; + fn = adr & 0xffff; + + pdev = pci_get_slot(pbus, PCI_DEVFN(dev, fn)); + if (hnd == handle) + break; + + pbus = pdev->subordinate; + pci_dev_put(pdev); + } +out: + list_for_each_entry_safe(node, tmp, &device_list, node) + kfree(node); + + return pdev; +} +EXPORT_SYMBOL_GPL(acpi_get_pci_dev); + /** * acpi_pci_osc_control_set - commit requested control to Firmware * @handle: acpi_handle for the target ACPI object @@ -363,31 +467,46 @@ EXPORT_SYMBOL(acpi_pci_osc_control_set); static int __devinit acpi_pci_root_add(struct acpi_device *device) { - int result = 0; - struct acpi_pci_root *root = NULL; - struct acpi_pci_root *tmp; - acpi_status status = AE_OK; - unsigned long long value = 0; - acpi_handle handle = NULL; + unsigned long long segment, bus; + acpi_status status; + int result; + struct acpi_pci_root *root; + acpi_handle handle; struct acpi_device *child; u32 flags, base_flags; + segment = 0; + status = acpi_evaluate_integer(device->handle, METHOD_NAME__SEG, NULL, + &segment); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + printk(KERN_ERR PREFIX "can't evaluate _SEG\n"); + return -ENODEV; + } - if (!device) - return -EINVAL; + /* Check _CRS first, then _BBN. If no _BBN, default to zero. */ + bus = 0; + status = try_get_root_bridge_busnr(device->handle, &bus); + if (ACPI_FAILURE(status)) { + status = acpi_evaluate_integer(device->handle, METHOD_NAME__BBN, NULL, &bus); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + printk(KERN_ERR PREFIX + "no bus number in _CRS and can't evaluate _BBN\n"); + return -ENODEV; + } + } root = kzalloc(sizeof(struct acpi_pci_root), GFP_KERNEL); if (!root) return -ENOMEM; - INIT_LIST_HEAD(&root->node); + INIT_LIST_HEAD(&root->node); root->device = device; + root->segment = segment & 0xFFFF; + root->bus_nr = bus & 0xFF; strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME); strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS); device->driver_data = root; - device->ops.bind = acpi_pci_bind; - /* * All supported architectures that use ACPI have support for * PCI domains, so we indicate this in _OSC support capabilities. @@ -395,79 +514,6 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) flags = base_flags = OSC_PCI_SEGMENT_GROUPS_SUPPORT; acpi_pci_osc_support(root, flags); - /* - * Segment - * ------- - * Obtained via _SEG, if exists, otherwise assumed to be zero (0). - */ - status = acpi_evaluate_integer(device->handle, METHOD_NAME__SEG, NULL, - &value); - switch (status) { - case AE_OK: - root->id.segment = (u16) value; - break; - case AE_NOT_FOUND: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Assuming segment 0 (no _SEG)\n")); - root->id.segment = 0; - break; - default: - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _SEG")); - result = -ENODEV; - goto end; - } - - /* - * Bus - * --- - * Obtained via _BBN, if exists, otherwise assumed to be zero (0). - */ - status = acpi_evaluate_integer(device->handle, METHOD_NAME__BBN, NULL, - &value); - switch (status) { - case AE_OK: - root->id.bus = (u16) value; - break; - case AE_NOT_FOUND: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Assuming bus 0 (no _BBN)\n")); - root->id.bus = 0; - break; - default: - ACPI_EXCEPTION((AE_INFO, status, "Evaluating _BBN")); - result = -ENODEV; - goto end; - } - - /* Some systems have wrong _BBN */ - list_for_each_entry(tmp, &acpi_pci_roots, node) { - if ((tmp->id.segment == root->id.segment) - && (tmp->id.bus == root->id.bus)) { - int bus = 0; - acpi_status status; - - printk(KERN_ERR PREFIX - "Wrong _BBN value, reboot" - " and use option 'pci=noacpi'\n"); - - status = try_get_root_bridge_busnr(device->handle, &bus); - if (ACPI_FAILURE(status)) - break; - if (bus != root->id.bus) { - printk(KERN_INFO PREFIX - "PCI _CRS %d overrides _BBN 0\n", bus); - root->id.bus = bus; - } - break; - } - } - /* - * Device & Function - * ----------------- - * Obtained from _ADR (which has already been evaluated for us). - */ - root->id.device = device->pnp.bus_address >> 16; - root->id.function = device->pnp.bus_address & 0xFFFF; - /* * TBD: Need PCI interface for enumeration/configuration of roots. */ @@ -477,7 +523,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) printk(KERN_INFO PREFIX "%s [%s] (%04x:%02x)\n", acpi_device_name(device), acpi_device_bid(device), - root->id.segment, root->id.bus); + root->segment, root->bus_nr); /* * Scan the Root Bridge @@ -486,11 +532,11 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) * PCI namespace does not get created until this call is made (and * thus the root bridge's pci_dev does not exist). */ - root->bus = pci_acpi_scan_root(device, root->id.segment, root->id.bus); + root->bus = pci_acpi_scan_root(device, segment, bus); if (!root->bus) { printk(KERN_ERR PREFIX "Bus %04x:%02x not present in PCI namespace\n", - root->id.segment, root->id.bus); + root->segment, root->bus_nr); result = -ENODEV; goto end; } @@ -500,7 +546,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) * ----------------------- * Thus binding the ACPI and PCI devices. */ - result = acpi_pci_bind_root(device, &root->id, root->bus); + result = acpi_pci_bind_root(device); if (result) goto end; @@ -511,8 +557,7 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) */ status = acpi_get_handle(device->handle, METHOD_NAME__PRT, &handle); if (ACPI_SUCCESS(status)) - result = acpi_pci_irq_add_prt(device->handle, root->id.segment, - root->id.bus); + result = acpi_pci_irq_add_prt(device->handle, root->bus); /* * Scan and bind all _ADR-Based Devices @@ -531,42 +576,28 @@ static int __devinit acpi_pci_root_add(struct acpi_device *device) if (flags != base_flags) acpi_pci_osc_support(root, flags); - end: - if (result) { - if (!list_empty(&root->node)) - list_del(&root->node); - kfree(root); - } + return 0; +end: + if (!list_empty(&root->node)) + list_del(&root->node); + kfree(root); return result; } static int acpi_pci_root_start(struct acpi_device *device) { - struct acpi_pci_root *root; + struct acpi_pci_root *root = acpi_driver_data(device); - - list_for_each_entry(root, &acpi_pci_roots, node) { - if (root->device == device) { - pci_bus_add_devices(root->bus); - return 0; - } - } - return -ENODEV; + pci_bus_add_devices(root->bus); + return 0; } static int acpi_pci_root_remove(struct acpi_device *device, int type) { - struct acpi_pci_root *root = NULL; - - - if (!device || !acpi_driver_data(device)) - return -EINVAL; - - root = acpi_driver_data(device); + struct acpi_pci_root *root = acpi_driver_data(device); kfree(root); - return 0; } diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 56665a63bf19..d74365d4a6e7 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -194,7 +194,7 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state) static int acpi_power_on(acpi_handle handle, struct acpi_device *dev) { - int result = 0, state; + int result = 0; int found = 0; acpi_status status = AE_OK; struct acpi_power_resource *resource = NULL; @@ -236,18 +236,6 @@ static int acpi_power_on(acpi_handle handle, struct acpi_device *dev) if (ACPI_FAILURE(status)) return -ENODEV; - if (!acpi_power_nocheck) { - /* - * If acpi_power_nocheck is set, it is unnecessary to check - * the power state after power transition. - */ - result = acpi_power_get_state(resource->device->handle, - &state); - if (result) - return result; - if (state != ACPI_POWER_RESOURCE_STATE_ON) - return -ENOEXEC; - } /* Update the power resource's _device_ power state */ resource->device->power.state = ACPI_STATE_D0; @@ -258,7 +246,7 @@ static int acpi_power_on(acpi_handle handle, struct acpi_device *dev) static int acpi_power_off_device(acpi_handle handle, struct acpi_device *dev) { - int result = 0, state; + int result = 0; acpi_status status = AE_OK; struct acpi_power_resource *resource = NULL; struct list_head *node, *next; @@ -293,18 +281,6 @@ static int acpi_power_off_device(acpi_handle handle, struct acpi_device *dev) if (ACPI_FAILURE(status)) return -ENODEV; - if (!acpi_power_nocheck) { - /* - * If acpi_power_nocheck is set, it is unnecessary to check - * the power state after power transition. - */ - result = acpi_power_get_state(handle, &state); - if (result) - return result; - if (state != ACPI_POWER_RESOURCE_STATE_OFF) - return -ENOEXEC; - } - /* Update the power resource's _device_ power state */ resource->device->power.state = ACPI_STATE_D3; diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 23f0fb84f1c1..84e0f3c07442 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -89,7 +89,7 @@ static int acpi_processor_handle_eject(struct acpi_processor *pr); static const struct acpi_device_id processor_device_ids[] = { {ACPI_PROCESSOR_OBJECT_HID, 0}, - {ACPI_PROCESSOR_HID, 0}, + {"ACPI0007", 0}, {"", 0}, }; MODULE_DEVICE_TABLE(acpi, processor_device_ids); @@ -596,7 +596,21 @@ static int acpi_processor_get_info(struct acpi_device *device) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No bus mastering arbitration control\n")); - if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_HID)) { + if (!strcmp(acpi_device_hid(device), ACPI_PROCESSOR_OBJECT_HID)) { + /* Declared with "Processor" statement; match ProcessorID */ + status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer); + if (ACPI_FAILURE(status)) { + printk(KERN_ERR PREFIX "Evaluating processor object\n"); + return -ENODEV; + } + + /* + * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP. + * >>> 'acpi_get_processor_id(acpi_id, &id)' in + * arch/xxx/acpi.c + */ + pr->acpi_id = object.processor.proc_id; + } else { /* * Declared with "Device" statement; match _UID. * Note that we don't handle string _UIDs yet. @@ -611,20 +625,6 @@ static int acpi_processor_get_info(struct acpi_device *device) } device_declaration = 1; pr->acpi_id = value; - } else { - /* Declared with "Processor" statement; match ProcessorID */ - status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer); - if (ACPI_FAILURE(status)) { - printk(KERN_ERR PREFIX "Evaluating processor object\n"); - return -ENODEV; - } - - /* - * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP. - * >>> 'acpi_get_processor_id(acpi_id, &id)' in - * arch/xxx/acpi.c - */ - pr->acpi_id = object.processor.proc_id; } cpu_index = get_cpu_id(pr->handle, device_declaration, pr->acpi_id); @@ -649,7 +649,16 @@ static int acpi_processor_get_info(struct acpi_device *device) return -ENODEV; } } - + /* + * On some boxes several processors use the same processor bus id. + * But they are located in different scope. For example: + * \_SB.SCK0.CPU0 + * \_SB.SCK1.CPU0 + * Rename the processor device bus id. And the new bus id will be + * generated as the following format: + * CPU+CPU ID. + */ + sprintf(acpi_device_bid(device), "CPU%X", pr->id); ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Processor [%d:%d]\n", pr->id, pr->acpi_id)); @@ -731,6 +740,8 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device) /* _PDC call should be done before doing anything else (if reqd.). */ arch_acpi_processor_init_pdc(pr); acpi_processor_set_pdc(pr); + arch_acpi_processor_cleanup_pdc(pr); + #ifdef CONFIG_CPU_FREQ acpi_processor_ppc_has_changed(pr); #endif diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 10a2d913635a..0efa59e7e3af 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -139,7 +139,7 @@ static void acpi_safe_halt(void) * are affected too. We pick the most conservative approach: we assume * that the local APIC stops in both C2 and C3. */ -static void acpi_timer_check_state(int state, struct acpi_processor *pr, +static void lapic_timer_check_state(int state, struct acpi_processor *pr, struct acpi_processor_cx *cx) { struct acpi_processor_power *pwr = &pr->power; @@ -162,7 +162,7 @@ static void acpi_timer_check_state(int state, struct acpi_processor *pr, pr->power.timer_broadcast_on_state = state; } -static void acpi_propagate_timer_broadcast(struct acpi_processor *pr) +static void lapic_timer_propagate_broadcast(struct acpi_processor *pr) { unsigned long reason; @@ -173,7 +173,7 @@ static void acpi_propagate_timer_broadcast(struct acpi_processor *pr) } /* Power(C) State timer broadcast control */ -static void acpi_state_timer_broadcast(struct acpi_processor *pr, +static void lapic_timer_state_broadcast(struct acpi_processor *pr, struct acpi_processor_cx *cx, int broadcast) { @@ -190,10 +190,10 @@ static void acpi_state_timer_broadcast(struct acpi_processor *pr, #else -static void acpi_timer_check_state(int state, struct acpi_processor *pr, +static void lapic_timer_check_state(int state, struct acpi_processor *pr, struct acpi_processor_cx *cstate) { } -static void acpi_propagate_timer_broadcast(struct acpi_processor *pr) { } -static void acpi_state_timer_broadcast(struct acpi_processor *pr, +static void lapic_timer_propagate_broadcast(struct acpi_processor *pr) { } +static void lapic_timer_state_broadcast(struct acpi_processor *pr, struct acpi_processor_cx *cx, int broadcast) { @@ -515,7 +515,8 @@ static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx) static void acpi_processor_power_verify_c3(struct acpi_processor *pr, struct acpi_processor_cx *cx) { - static int bm_check_flag; + static int bm_check_flag = -1; + static int bm_control_flag = -1; if (!cx->address) @@ -545,12 +546,14 @@ static void acpi_processor_power_verify_c3(struct acpi_processor *pr, } /* All the logic here assumes flags.bm_check is same across all CPUs */ - if (!bm_check_flag) { + if (bm_check_flag == -1) { /* Determine whether bm_check is needed based on CPU */ acpi_processor_power_init_bm_check(&(pr->flags), pr->id); bm_check_flag = pr->flags.bm_check; + bm_control_flag = pr->flags.bm_control; } else { pr->flags.bm_check = bm_check_flag; + pr->flags.bm_control = bm_control_flag; } if (pr->flags.bm_check) { @@ -614,29 +617,25 @@ static int acpi_processor_power_verify(struct acpi_processor *pr) switch (cx->type) { case ACPI_STATE_C1: cx->valid = 1; - acpi_timer_check_state(i, pr, cx); break; case ACPI_STATE_C2: acpi_processor_power_verify_c2(cx); - if (cx->valid) - acpi_timer_check_state(i, pr, cx); break; case ACPI_STATE_C3: acpi_processor_power_verify_c3(pr, cx); - if (cx->valid) - acpi_timer_check_state(i, pr, cx); break; } - if (cx->valid) - tsc_check_state(cx->type); + if (!cx->valid) + continue; - if (cx->valid) - working++; + lapic_timer_check_state(i, pr, cx); + tsc_check_state(cx->type); + working++; } - acpi_propagate_timer_broadcast(pr); + lapic_timer_propagate_broadcast(pr); return (working); } @@ -839,7 +838,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, return 0; } - acpi_state_timer_broadcast(pr, cx, 1); + lapic_timer_state_broadcast(pr, cx, 1); kt1 = ktime_get_real(); acpi_idle_do_entry(cx); kt2 = ktime_get_real(); @@ -847,7 +846,7 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, local_irq_enable(); cx->usage++; - acpi_state_timer_broadcast(pr, cx, 0); + lapic_timer_state_broadcast(pr, cx, 0); return idle_time; } @@ -892,7 +891,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, * Must be done before busmaster disable as we might need to * access HPET ! */ - acpi_state_timer_broadcast(pr, cx, 1); + lapic_timer_state_broadcast(pr, cx, 1); if (cx->type == ACPI_STATE_C3) ACPI_FLUSH_CPU_CACHE(); @@ -914,7 +913,7 @@ static int acpi_idle_enter_simple(struct cpuidle_device *dev, cx->usage++; - acpi_state_timer_broadcast(pr, cx, 0); + lapic_timer_state_broadcast(pr, cx, 0); cx->time += sleep_ticks; return idle_time; } @@ -981,7 +980,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, * Must be done before busmaster disable as we might need to * access HPET ! */ - acpi_state_timer_broadcast(pr, cx, 1); + lapic_timer_state_broadcast(pr, cx, 1); kt1 = ktime_get_real(); /* @@ -1026,7 +1025,7 @@ static int acpi_idle_enter_bm(struct cpuidle_device *dev, cx->usage++; - acpi_state_timer_broadcast(pr, cx, 0); + lapic_timer_state_broadcast(pr, cx, 0); cx->time += sleep_ticks; return idle_time; } diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 8ff510b91d88..781435d7e369 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -95,7 +95,7 @@ acpi_device_modalias_show(struct device *dev, struct device_attribute *attr, cha } static DEVICE_ATTR(modalias, 0444, acpi_device_modalias_show, NULL); -static int acpi_bus_hot_remove_device(void *context) +static void acpi_bus_hot_remove_device(void *context) { struct acpi_device *device; acpi_handle handle = context; @@ -104,10 +104,10 @@ static int acpi_bus_hot_remove_device(void *context) acpi_status status = AE_OK; if (acpi_bus_get_device(handle, &device)) - return 0; + return; if (!device) - return 0; + return; ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Hot-removing device %s...\n", dev_name(&device->dev))); @@ -115,7 +115,7 @@ static int acpi_bus_hot_remove_device(void *context) if (acpi_bus_trim(device, 1)) { printk(KERN_ERR PREFIX "Removing device failed\n"); - return -1; + return; } /* power off device */ @@ -142,9 +142,10 @@ static int acpi_bus_hot_remove_device(void *context) */ status = acpi_evaluate_object(handle, "_EJ0", &arg_list, NULL); if (ACPI_FAILURE(status)) - return -ENODEV; + printk(KERN_WARNING PREFIX + "Eject device failed\n"); - return 0; + return; } static ssize_t @@ -155,7 +156,6 @@ acpi_eject_store(struct device *d, struct device_attribute *attr, acpi_status status; acpi_object_type type = 0; struct acpi_device *acpi_device = to_acpi_device(d); - struct task_struct *task; if ((!count) || (buf[0] != '1')) { return -EINVAL; @@ -172,11 +172,7 @@ acpi_eject_store(struct device *d, struct device_attribute *attr, goto err; } - /* remove the device in another thread to fix the deadlock issue */ - task = kthread_run(acpi_bus_hot_remove_device, - acpi_device->handle, "acpi_hot_remove_device"); - if (IS_ERR(task)) - ret = PTR_ERR(task); + acpi_os_hotplug_execute(acpi_bus_hot_remove_device, acpi_device->handle); err: return ret; } @@ -198,12 +194,12 @@ acpi_device_path_show(struct device *dev, struct device_attribute *attr, char *b int result; result = acpi_get_name(acpi_dev->handle, ACPI_FULL_PATHNAME, &path); - if(result) + if (result) goto end; result = sprintf(buf, "%s\n", (char*)path.pointer); kfree(path.pointer); - end: +end: return result; } static DEVICE_ATTR(path, 0444, acpi_device_path_show, NULL); @@ -217,21 +213,21 @@ static int acpi_device_setup_files(struct acpi_device *dev) /* * Devices gotten from FADT don't have a "path" attribute */ - if(dev->handle) { + if (dev->handle) { result = device_create_file(&dev->dev, &dev_attr_path); - if(result) + if (result) goto end; } - if(dev->flags.hardware_id) { + if (dev->flags.hardware_id) { result = device_create_file(&dev->dev, &dev_attr_hid); - if(result) + if (result) goto end; } - if (dev->flags.hardware_id || dev->flags.compatible_ids){ + if (dev->flags.hardware_id || dev->flags.compatible_ids) { result = device_create_file(&dev->dev, &dev_attr_modalias); - if(result) + if (result) goto end; } @@ -242,7 +238,7 @@ static int acpi_device_setup_files(struct acpi_device *dev) status = acpi_get_handle(dev->handle, "_EJ0", &temp); if (ACPI_SUCCESS(status)) result = device_create_file(&dev->dev, &dev_attr_eject); - end: +end: return result; } @@ -262,9 +258,9 @@ static void acpi_device_remove_files(struct acpi_device *dev) if (dev->flags.hardware_id || dev->flags.compatible_ids) device_remove_file(&dev->dev, &dev_attr_modalias); - if(dev->flags.hardware_id) + if (dev->flags.hardware_id) device_remove_file(&dev->dev, &dev_attr_hid); - if(dev->handle) + if (dev->handle) device_remove_file(&dev->dev, &dev_attr_path); } /* -------------------------------------------------------------------------- @@ -512,7 +508,7 @@ static int acpi_device_register(struct acpi_device *device, break; } } - if(!found) { + if (!found) { acpi_device_bus_id = new_bus_id; strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "device"); acpi_device_bus_id->instance_no = 0; @@ -530,22 +526,21 @@ static int acpi_device_register(struct acpi_device *device, if (device->parent) device->dev.parent = &parent->dev; device->dev.bus = &acpi_bus_type; - device_initialize(&device->dev); device->dev.release = &acpi_device_release; - result = device_add(&device->dev); - if(result) { - dev_err(&device->dev, "Error adding device\n"); + result = device_register(&device->dev); + if (result) { + dev_err(&device->dev, "Error registering device\n"); goto end; } result = acpi_device_setup_files(device); - if(result) + if (result) printk(KERN_ERR PREFIX "Error creating sysfs interface for device %s\n", dev_name(&device->dev)); device->removal_type = ACPI_BUS_REMOVAL_NORMAL; return 0; - end: +end: mutex_lock(&acpi_device_lock); if (device->parent) list_del(&device->node); @@ -577,7 +572,7 @@ static void acpi_device_unregister(struct acpi_device *device, int type) * @device: the device to add and initialize * @driver: driver for the device * - * Used to initialize a device via its device driver. Called whenever a + * Used to initialize a device via its device driver. Called whenever a * driver is bound to a device. Invokes the driver's add() ops. */ static int @@ -585,7 +580,6 @@ acpi_bus_driver_init(struct acpi_device *device, struct acpi_driver *driver) { int result = 0; - if (!device || !driver) return -EINVAL; @@ -802,7 +796,7 @@ static int acpi_bus_get_wakeup_device_flags(struct acpi_device *device) if (!acpi_match_device_ids(device, button_device_ids)) device->wakeup.flags.run_wake = 1; - end: +end: if (ACPI_FAILURE(status)) device->flags.wake_capable = 0; return 0; @@ -1070,7 +1064,7 @@ static void acpi_device_set_id(struct acpi_device *device, break; } - /* + /* * \_SB * ---- * Fix for the system root bus device -- the only root-level device. @@ -1320,7 +1314,7 @@ acpi_add_single_object(struct acpi_device **child, device->parent->ops.bind(device); } - end: +end: if (!result) *child = device; else { @@ -1464,7 +1458,6 @@ acpi_bus_add(struct acpi_device **child, return result; } - EXPORT_SYMBOL(acpi_bus_add); int acpi_bus_start(struct acpi_device *device) @@ -1484,7 +1477,6 @@ int acpi_bus_start(struct acpi_device *device) } return result; } - EXPORT_SYMBOL(acpi_bus_start); int acpi_bus_trim(struct acpi_device *start, int rmdevice) @@ -1542,7 +1534,6 @@ int acpi_bus_trim(struct acpi_device *start, int rmdevice) } EXPORT_SYMBOL_GPL(acpi_bus_trim); - static int acpi_bus_scan_fixed(struct acpi_device *root) { int result = 0; @@ -1610,6 +1601,6 @@ int __init acpi_scan_init(void) if (result) acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL); - Done: +Done: return result; } diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 1bdfb37377e3..8851315ce858 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -76,6 +76,7 @@ MODULE_LICENSE("GPL"); static int brightness_switch_enabled = 1; module_param(brightness_switch_enabled, bool, 0644); +static int register_count = 0; static int acpi_video_bus_add(struct acpi_device *device); static int acpi_video_bus_remove(struct acpi_device *device, int type); static int acpi_video_resume(struct acpi_device *device); @@ -586,6 +587,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5315"), }, }, + { + .callback = video_set_bqc_offset, + .ident = "Acer Aspire 7720", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Acer"), + DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"), + }, + }, {} }; @@ -976,6 +985,11 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) device->backlight->props.max_brightness = device->brightness->count-3; kfree(name); + result = sysfs_create_link(&device->backlight->dev.kobj, + &device->dev->dev.kobj, "device"); + if (result) + printk(KERN_ERR PREFIX "Create sysfs link\n"); + device->cdev = thermal_cooling_device_register("LCD", device->dev, &video_cooling_ops); if (IS_ERR(device->cdev)) @@ -1054,15 +1068,15 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video) static int acpi_video_bus_check(struct acpi_video_bus *video) { acpi_status status = -ENOENT; - struct device *dev; + struct pci_dev *dev; if (!video) return -EINVAL; - dev = acpi_get_physical_pci_device(video->device->handle); + dev = acpi_get_pci_dev(video->device->handle); if (!dev) return -ENODEV; - put_device(dev); + pci_dev_put(dev); /* Since there is no HID, CID and so on for VGA driver, we have * to check well known required nodes. @@ -1990,6 +2004,7 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device) status = acpi_remove_notify_handler(device->dev->handle, ACPI_DEVICE_NOTIFY, acpi_video_device_notify); + sysfs_remove_link(&device->backlight->dev.kobj, "device"); backlight_device_unregister(device->backlight); if (device->cdev) { sysfs_remove_link(&device->dev->dev.kobj, @@ -2318,6 +2333,13 @@ static int __init intel_opregion_present(void) int acpi_video_register(void) { int result = 0; + if (register_count) { + /* + * if the function of acpi_video_register is already called, + * don't register the acpi_vide_bus again and return no error. + */ + return 0; + } acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir); if (!acpi_video_dir) @@ -2329,10 +2351,35 @@ int acpi_video_register(void) return -ENODEV; } + /* + * When the acpi_video_bus is loaded successfully, increase + * the counter reference. + */ + register_count = 1; + return 0; } EXPORT_SYMBOL(acpi_video_register); +void acpi_video_unregister(void) +{ + if (!register_count) { + /* + * If the acpi video bus is already unloaded, don't + * unload it again and return directly. + */ + return; + } + acpi_bus_unregister_driver(&acpi_video_bus); + + remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); + + register_count = 0; + + return; +} +EXPORT_SYMBOL(acpi_video_unregister); + /* * This is kind of nasty. Hardware using Intel chipsets may require * the video opregion code to be run first in order to initialise @@ -2350,16 +2397,12 @@ static int __init acpi_video_init(void) return acpi_video_register(); } -void acpi_video_exit(void) +static void __exit acpi_video_exit(void) { - - acpi_bus_unregister_driver(&acpi_video_bus); - - remove_proc_entry(ACPI_VIDEO_CLASS, acpi_root_dir); + acpi_video_unregister(); return; } -EXPORT_SYMBOL(acpi_video_exit); module_init(acpi_video_init); module_exit(acpi_video_exit); diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 09737275e25f..7cd2b63435ea 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -10,7 +10,7 @@ * assinged * * After PCI devices are glued with ACPI devices - * acpi_get_physical_pci_device() can be called to identify ACPI graphics + * acpi_get_pci_dev() can be called to identify ACPI graphics * devices for which a real graphics card is plugged in * * Now acpi_video_get_capabilities() can be called to check which @@ -36,6 +36,7 @@ #include <linux/acpi.h> #include <linux/dmi.h> +#include <linux/pci.h> ACPI_MODULE_NAME("video"); #define _COMPONENT ACPI_VIDEO_COMPONENT @@ -109,7 +110,7 @@ static acpi_status find_video(acpi_handle handle, u32 lvl, void *context, void **rv) { long *cap = context; - struct device *dev; + struct pci_dev *dev; struct acpi_device *acpi_dev; const struct acpi_device_id video_ids[] = { @@ -120,10 +121,10 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv) return AE_OK; if (!acpi_match_device_ids(acpi_dev, video_ids)) { - dev = acpi_get_physical_pci_device(handle); + dev = acpi_get_pci_dev(handle); if (!dev) return AE_OK; - put_device(dev); + pci_dev_put(dev); *cap |= acpi_is_video_device(acpi_dev); } return AE_OK; |