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path: root/drivers/acpi/bus.c
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Diffstat (limited to 'drivers/acpi/bus.c')
-rw-r--r--drivers/acpi/bus.c56
1 files changed, 41 insertions, 15 deletions
diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index cf925c4f36b7..c5bc8cfe09fa 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -52,6 +52,12 @@ struct proc_dir_entry *acpi_root_dir;
EXPORT_SYMBOL(acpi_root_dir);
#ifdef CONFIG_X86
+#ifdef CONFIG_ACPI_CUSTOM_DSDT
+static inline int set_copy_dsdt(const struct dmi_system_id *id)
+{
+ return 0;
+}
+#else
static int set_copy_dsdt(const struct dmi_system_id *id)
{
printk(KERN_NOTICE "%s detected - "
@@ -59,6 +65,7 @@ static int set_copy_dsdt(const struct dmi_system_id *id)
acpi_gbl_copy_dsdt_locally = 1;
return 0;
}
+#endif
static struct dmi_system_id dsdt_dmi_table[] __initdata = {
/*
@@ -132,6 +139,21 @@ void acpi_bus_private_data_handler(acpi_handle handle,
}
EXPORT_SYMBOL(acpi_bus_private_data_handler);
+int acpi_bus_attach_private_data(acpi_handle handle, void *data)
+{
+ acpi_status status;
+
+ status = acpi_attach_data(handle,
+ acpi_bus_private_data_handler, data);
+ if (ACPI_FAILURE(status)) {
+ acpi_handle_debug(handle, "Error attaching device data\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(acpi_bus_attach_private_data);
+
int acpi_bus_get_private_data(acpi_handle handle, void **data)
{
acpi_status status;
@@ -140,15 +162,20 @@ int acpi_bus_get_private_data(acpi_handle handle, void **data)
return -EINVAL;
status = acpi_get_data(handle, acpi_bus_private_data_handler, data);
- if (ACPI_FAILURE(status) || !*data) {
- ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No context for object [%p]\n",
- handle));
+ if (ACPI_FAILURE(status)) {
+ acpi_handle_debug(handle, "No context for object\n");
return -ENODEV;
}
return 0;
}
-EXPORT_SYMBOL(acpi_bus_get_private_data);
+EXPORT_SYMBOL_GPL(acpi_bus_get_private_data);
+
+void acpi_bus_detach_private_data(acpi_handle handle)
+{
+ acpi_detach_data(handle, acpi_bus_private_data_handler);
+}
+EXPORT_SYMBOL_GPL(acpi_bus_detach_private_data);
void acpi_bus_no_hotplug(acpi_handle handle)
{
@@ -340,16 +367,18 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
{
struct acpi_device *adev;
struct acpi_driver *driver;
- acpi_status status;
u32 ost_code = ACPI_OST_SC_NON_SPECIFIC_FAILURE;
+ bool hotplug_event = false;
switch (type) {
case ACPI_NOTIFY_BUS_CHECK:
acpi_handle_debug(handle, "ACPI_NOTIFY_BUS_CHECK event\n");
+ hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_CHECK:
acpi_handle_debug(handle, "ACPI_NOTIFY_DEVICE_CHECK event\n");
+ hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_WAKE:
@@ -358,6 +387,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
case ACPI_NOTIFY_EJECT_REQUEST:
acpi_handle_debug(handle, "ACPI_NOTIFY_EJECT_REQUEST event\n");
+ hotplug_event = true;
break;
case ACPI_NOTIFY_DEVICE_CHECK_LIGHT:
@@ -393,16 +423,9 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data)
(driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS))
driver->ops.notify(adev, type);
- switch (type) {
- case ACPI_NOTIFY_BUS_CHECK:
- case ACPI_NOTIFY_DEVICE_CHECK:
- case ACPI_NOTIFY_EJECT_REQUEST:
- status = acpi_hotplug_schedule(adev, type);
- if (ACPI_SUCCESS(status))
- return;
- default:
- break;
- }
+ if (hotplug_event && ACPI_SUCCESS(acpi_hotplug_schedule(adev, type)))
+ return;
+
acpi_bus_put_acpi_device(adev);
return;
@@ -466,6 +489,9 @@ void __init acpi_early_init(void)
printk(KERN_INFO PREFIX "Core revision %08x\n", ACPI_CA_VERSION);
+ /* It's safe to verify table checksums during late stage */
+ acpi_gbl_verify_table_checksum = TRUE;
+
/* enable workarounds, unless strict ACPI spec. compliance */
if (!acpi_strict)
acpi_gbl_enable_interpreter_slack = TRUE;