Merge tag 'acpi-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These are usual ACPICA code updates (although there are more of them
  than in the last few releases), a noticeable EC driver update (which
  mostly consists of cleanups, though), the device enumeration quirks
  handling rework from Hans, some updates eliminating unnecessary CPU
  cache flushing in some places (processor idle and system-wide PM code)
  and a bunch of assorted cleanups and fixes.

  Specifics:

   - Update ACPICA code in the kernel to the 20211217 upstream release
     including the following changes:

      - iASL/Disassembler: Additional support for NHLT table (Bob
        Moore).
      - Change a return_ACPI_STATUS (AE_BAD_PARAMETER) (Bob Moore).
      - Fix a couple of warnings under MSVC (Bob Moore).
      - iASL: Add TDEL table to both compiler/disassembler (Bob Moore).
      - iASL/NHLT table: "Specific Data" field support (Bob Moore).
      - Use original data_table_region pointer for accesses (Jessica
        Clarke).
      - Use original pointer for virtual origin tables (Jessica Clarke).
      - Macros: Remove ACPI_PHYSADDR_TO_PTR (Jessica Clarke).
      - Avoid subobject buffer overflow when validating RSDP signature
        (Jessica Clarke).
      - iASL: Add suppport for AGDI table (Ilkka Koskinen).
      - Hardware: Do not flush CPU cache when entering S4 and S5 (Kirill
        A. Shutemov).
      - Expand the ACPI_ACCESS_ definitions (Mark Langsdorf).
      - Utilities: Avoid deleting the same object twice in a row (Rafael
        Wysocki).
      - Executer: Fix REFCLASS_REFOF case in acpi_ex_opcode_1A_0T_1R()
        (Rafael Wysocki).
      - Fix AEST Processor generic resource substructure data field byte
        length (Shuuichirou Ishii).
      - Fix wrong interpretation of PCC address (Sudeep Holla).
      - Add support for PCC Opregion special context data (Sudeep
        Holla).

   - Implement OperationRegion handler for PCC Type 3 subtype (Sudeep
     Holla).

   - Introduce acpi_fetch_acpi_dev() as a replacement for
     acpi_bus_get_device() and use it in the ACPI subsystem (Rafael
     Wysocki).

   - Avoid using _CID for device enumaration if _HID is missing or
     invalid (Rafael Wysocki).

   - Rework quirk handling during ACPI device enumeration and add some
     new quirks for known broken platforms (Hans de Goede).

   - Avoid unnecessary or redundant CPU cache flushing during system PM
     transitions (Kirill A. Shutemov).

   - Add PM debug messages related to power resources (Rafael Wysocki).

   - Fix kernel-doc comment in the PCI host bridge ACPI driver (Yang
     Li).

   - Rework flushing of EC work while suspended to idle and clean up the
     handling of events in the ACPI EC driver (Rafael Wysocki).

   - Prohibit ec_sys module parameter write_support from being used when
     the system is locked down (Hans de Goede).

   - Make the ACPI processor thermal driver use cpufreq_cpu_get() to
     check for presence of cpufreq policy (Manfred Spraul).

   - Avoid unnecessary CPU cache flushing in the ACPI processor idle
     driver (Kirill A. Shutemov).

   - Replace kernel.h with the necessary inclusions in the ACPI
     processor driver (Andy Shevchenko).

   - Use swap() instead of open coding it in the ACPI processor idle
     driver (Guo Zhengkui).

   - Fix the handling of defective LPAT in the ACPI xpower PMIC driver
     and clean up some definitions of PMIC data structures (Hans de
     Goede).

   - Fix outdated comment in the ACPI DPTF driver (Sumeet Pawnikar).

   - Add AEST to the list of known ACPI table signatures (Shuuichirou
     Ishii).

   - Make ACPI NUMA code take hotpluggable memblocks into account when
     CONFIG_MEMORY_HOTPLUG is not set (Vitaly Kuznetsov).

   - Use default_groups in kobj_type in the ACPI sysfs code (Greg
     Kroah-Hartman).

   - Rearrange _CPC structure documentation (Andy Shevchenko).

   - Drop an always true check from the ACPI thermal driver (Adam
     Borowski).

   - Add new "not charging" quirk for Lenovo ThinkPads to the ACPI
     battery driver (Thomas Weißschuh)"

* tag 'acpi-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (64 commits)
  ACPI: PCC: Implement OperationRegion handler for the PCC Type 3 subtype
  ACPI / x86: Skip AC and battery devices on x86 Android tablets with broken DSDTs
  ACPI / x86: Introduce an acpi_quirk_skip_acpi_ac_and_battery() helper
  ACPI: processor: thermal: avoid cpufreq_get_policy()
  serdev: Do not instantiate serdevs on boards with known bogus DSDT entries
  i2c: acpi: Do not instantiate I2C-clients on boards with known bogus DSDT entries
  ACPI / x86: Add acpi_quirk_skip_[i2c_client|serdev]_enumeration() helpers
  ACPI: scan: Create platform device for BCM4752 and LNV4752 ACPI nodes
  PCI/ACPI: Fix acpi_pci_osc_control_set() kernel-doc comment
  ACPI: battery: Add the ThinkPad "Not Charging" quirk
  ACPI: sysfs: use default_groups in kobj_type
  ACPICA: Update version to 20211217
  ACPICA: iASL/NHLT table: "Specific Data" field support
  ACPICA: iASL: Add suppport for AGDI table
  ACPICA: iASL: Add TDEL table to both compiler/disassembler
  ACPICA: Fixed a couple of warnings under MSVC
  ACPICA: Change a return_ACPI_STATUS (AE_BAD_PARAMETER)
  ACPICA: Hardware: Do not flush CPU cache when entering S4 and S5
  ACPICA: Add support for PCC Opregion special context data
  ACPICA: Fix wrong interpretation of PCC address
  ...

1 files changed, 39 insertions, 18 deletions

diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 89c4ae6ef3ec..1185ecea59d1 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -135,12 +135,12 @@ bool acpi_scan_is_offline(struct acpi_device *adev, bool uevent)
 static acpi_status acpi_bus_offline(acpi_handle handle, u32 lvl, void *data,
 				    void **ret_p)
 {
-	struct acpi_device *device = NULL;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	struct acpi_device_physical_node *pn;
 	bool second_pass = (bool)data;
 	acpi_status status = AE_OK;
 
-	if (acpi_bus_get_device(handle, &device))
+	if (!device)
 		return AE_OK;
 
 	if (device->handler && !device->handler->hotplug.enabled) {
@@ -180,10 +180,10 @@ static acpi_status acpi_bus_offline(acpi_handle handle, u32 lvl, void *data,
 static acpi_status acpi_bus_online(acpi_handle handle, u32 lvl, void *data,
 				   void **ret_p)
 {
-	struct acpi_device *device = NULL;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	struct acpi_device_physical_node *pn;
 
-	if (acpi_bus_get_device(handle, &device))
+	if (!device)
 		return AE_OK;
 
 	mutex_lock(&device->physical_node_lock);
@@ -599,6 +599,19 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device)
 }
 EXPORT_SYMBOL(acpi_bus_get_device);
 
+/**
+ * acpi_fetch_acpi_dev - Retrieve ACPI device object.
+ * @handle: ACPI handle associated with the requested ACPI device object.
+ *
+ * Return a pointer to the ACPI device object associated with @handle, if
+ * present, or NULL otherwise.
+ */
+struct acpi_device *acpi_fetch_acpi_dev(acpi_handle handle)
+{
+	return handle_to_device(handle, NULL);
+}
+EXPORT_SYMBOL_GPL(acpi_fetch_acpi_dev);
+
 static void get_acpi_device(void *dev)
 {
 	acpi_dev_get(dev);
@@ -805,7 +818,7 @@ static const char * const acpi_honor_dep_ids[] = {
 
 static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
 {
-	struct acpi_device *device = NULL;
+	struct acpi_device *device;
 	acpi_status status;
 
 	/*
@@ -820,7 +833,9 @@ static struct acpi_device *acpi_bus_get_parent(acpi_handle handle)
 		status = acpi_get_parent(handle, &handle);
 		if (ACPI_FAILURE(status))
 			return status == AE_NULL_ENTRY ? NULL : acpi_root;
-	} while (acpi_bus_get_device(handle, &device));
+
+		device = acpi_fetch_acpi_dev(handle);
+	} while (!device);
 	return device;
 }
 
@@ -1346,11 +1361,11 @@ static void acpi_set_pnp_ids(acpi_handle handle, struct acpi_device_pnp *pnp,
 		if (info->valid & ACPI_VALID_HID) {
 			acpi_add_id(pnp, info->hardware_id.string);
 			pnp->type.platform_id = 1;
-		}
-		if (info->valid & ACPI_VALID_CID) {
-			cid_list = &info->compatible_id_list;
-			for (i = 0; i < cid_list->count; i++)
-				acpi_add_id(pnp, cid_list->ids[i].string);
+			if (info->valid & ACPI_VALID_CID) {
+				cid_list = &info->compatible_id_list;
+				for (i = 0; i < cid_list->count; i++)
+					acpi_add_id(pnp, cid_list->ids[i].string);
+			}
 		}
 		if (info->valid & ACPI_VALID_ADR) {
 			pnp->bus_address = info->address;
@@ -1701,6 +1716,7 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 {
 	struct list_head resource_list;
 	bool is_serial_bus_slave = false;
+	static const struct acpi_device_id ignore_serial_bus_ids[] = {
 	/*
 	 * These devices have multiple I2cSerialBus resources and an i2c-client
 	 * must be instantiated for each, each with its own i2c_device_id.
@@ -1709,11 +1725,18 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	 * drivers/platform/x86/i2c-multi-instantiate.c driver, which knows
 	 * which i2c_device_id to use for each resource.
 	 */
-	static const struct acpi_device_id i2c_multi_instantiate_ids[] = {
 		{"BSG1160", },
 		{"BSG2150", },
 		{"INT33FE", },
 		{"INT3515", },
+	/*
+	 * HIDs of device with an UartSerialBusV2 resource for which userspace
+	 * expects a regular tty cdev to be created (instead of the in kernel
+	 * serdev) and which have a kernel driver which expects a platform_dev
+	 * such as the rfkill-gpio driver.
+	 */
+		{"BCM4752", },
+		{"LNV4752", },
 		{}
 	};
 
@@ -1727,8 +1750,7 @@ static bool acpi_device_enumeration_by_parent(struct acpi_device *device)
 	     fwnode_property_present(&device->fwnode, "baud")))
 		return true;
 
-	/* Instantiate a pdev for the i2c-multi-instantiate drv to bind to */
-	if (!acpi_match_device_ids(device, i2c_multi_instantiate_ids))
+	if (!acpi_match_device_ids(device, ignore_serial_bus_ids))
 		return false;
 
 	INIT_LIST_HEAD(&resource_list);
@@ -2015,11 +2037,10 @@ static bool acpi_bus_scan_second_pass;
 static acpi_status acpi_bus_check_add(acpi_handle handle, bool check_dep,
 				      struct acpi_device **adev_p)
 {
-	struct acpi_device *device = NULL;
+	struct acpi_device *device = acpi_fetch_acpi_dev(handle);
 	acpi_object_type acpi_type;
 	int type;
 
-	acpi_bus_get_device(handle, &device);
 	if (device)
 		goto out;
 
@@ -2577,8 +2598,8 @@ int __init acpi_scan_init(void)
 	if (result)
 		goto out;
 
-	result = acpi_bus_get_device(ACPI_ROOT_OBJECT, &acpi_root);
-	if (result)
+	acpi_root = acpi_fetch_acpi_dev(ACPI_ROOT_OBJECT);
+	if (!acpi_root)
 		goto out;
 
 	/* Fixed feature devices do not exist on HW-reduced platform */