Merge tag 'acpi-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
 "These update the ACPICA code in the kernel to the most recent upstream
  revision, address some issues related to the ACPI power resources
  management, simplify the enumeration of PCI devices having ACPI
  companions, add new quirks, fix assorted problems, update the
  ACPI-related information in maintainers and clean up code in several
  places.

  Specifics:

   - Update the ACPICA code in the kernel to upstream revision 20210930
     including the following changes:

        - Fix system-wide resume issue caused by evaluating control
          methods too early in the resume path (Rafael Wysocki).

        - Add support for Windows 2020 _OSI string (Mario Limonciello).

        - Add Generic Port Affinity type for SRAT (Alison Schofield).

        - Add disassembly support for the NHLT ACPI table (Bob Moore).

   - Avoid flushing caches before entering C3 type of idle states on AMD
     processors (Deepak Sharma).

   - Avoid enumerating CPUs that are not present and not online-capable
     according to the platform firmware (Mario Limonciello).

   - Add DMI-based mechanism to quirk IRQ overrides and use it for two
     platforms (Hui Wang).

   - Change the configuration of unused ACPI device objects to reflect
     the D3cold power state after enumerating devices (Rafael Wysocki).

   - Update MAINTAINERS information regarding ACPI (Rafael Wysocki).

   - Fix typo in ACPI Kconfig (Masanari Iid).

   - Use sysfs_emit() instead of snprintf() in some places (Qing Wang).

   - Make the association of ACPI device objects with PCI devices more
     straightforward and simplify the code doing that for all devices in
     general (Rafael Wysocki).

   - Use acpi_device_adr() in acpi_find_child_device() instead of
     evaluating _ADR (Rafael Wysocki).

   - Drop duplicate device IDs from PNP device IDs list (Krzysztof
     Kozlowski).

   - Allow acpi_idle_play_dead() to use C3 on AMD processors (Richard
     Gong).

   - Use ACPI_COMPANION() to simplify code in some drivers (Rafael
     Wysocki).

   - Check the states of all ACPI power resources during initialization
     to avoid dealing with power resources in unknown states (Rafael
     Wysocki).

   - Fix ACPI power resource issues related to sharing wakeup power
     resources (Rafael Wysocki).

   - Avoid registering redundant suspend_ops (Rafael Wysocki).

   - Report battery charging state as "full" if it appears to be over
     the design capacity (André Almeida).

   - Quirk GK45 mini PC to skip reading _PSR in the AC driver (Stefan
     Schaeckeler).

   - Mark apei_hest_parse() static (Christoph Hellwig).

   - Relax platform response timeout to 1 second after instructing it to
     inject an error (Shuai Xue).

   - Make the PRM code handle memory allocation and remapping failures
     more gracefully and drop some unnecessary blank lines from that
     code (Aubrey Li).

   - Fix spelling mistake in the ACPI documentation (Colin Ian King)"

* tag 'acpi-5.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (36 commits)
  ACPI: glue: Use acpi_device_adr() in acpi_find_child_device()
  perf: qcom_l2_pmu: ACPI: Use ACPI_COMPANION() directly
  ACPI: APEI: mark apei_hest_parse() static
  ACPI: APEI: EINJ: Relax platform response timeout to 1 second
  gpio-amdpt: ACPI: Use the ACPI_COMPANION() macro directly
  nouveau: ACPI: Use the ACPI_COMPANION() macro directly
  ACPI: resources: Add one more Medion model in IRQ override quirk
  ACPI: AC: Quirk GK45 to skip reading _PSR
  ACPI: PM: sleep: Do not set suspend_ops unnecessarily
  ACPI: PRM: Handle memory allocation and memory remap failure
  ACPI: PRM: Remove unnecessary blank lines
  ACPI: PM: Turn off wakeup power resources on _DSW/_PSW errors
  ACPI: PM: Fix sharing of wakeup power resources
  ACPI: PM: Turn off unused wakeup power resources
  ACPI: PM: Check states of power resources during initialization
  ACPI: replace snprintf() in "show" functions with sysfs_emit()
  ACPI: LPSS: Use ACPI_COMPANION() directly
  ACPI: scan: Release PM resources blocked by unused objects
  ACPI: battery: Accept charges over the design capacity as full
  ACPICA: Update version to 20210930
  ...

Documentation/firmware-guide/acpi/osi.rst

@@ -74,7 +74,7 @@ The ACPI BIOS flow would include an evaluation of _OS, and the AML
 interpreter in the kernel would return to it a string identifying the OS:
 
 Windows 98, SE: "Microsoft Windows"
-Windows ME: "Microsoft WindowsME:Millenium Edition"
+Windows ME: "Microsoft WindowsME:Millennium Edition"
 Windows NT: "Microsoft Windows NT"
 
 The idea was on a platform tasked with running multiple OS's,

MAINTAINERS

@@ -334,7 +334,7 @@ F:	drivers/platform/x86/acer-wmi.c
 
 ACPI
 M:	"Rafael J. Wysocki" <rafael@kernel.org>
-M:	Len Brown <lenb@kernel.org>
+R:	Len Brown <lenb@kernel.org>
 L:	linux-acpi@vger.kernel.org
 S:	Supported
 W:	https://01.org/linux-acpi
@@ -355,7 +355,7 @@ F:	tools/power/acpi/
 
 ACPI APEI
 M:	"Rafael J. Wysocki" <rafael@kernel.org>
-M:	Len Brown <lenb@kernel.org>
+R:	Len Brown <lenb@kernel.org>
 R:	James Morse <james.morse@arm.com>
 R:	Tony Luck <tony.luck@intel.com>
 R:	Borislav Petkov <bp@alien8.de>
@@ -378,14 +378,6 @@ F:	drivers/acpi/acpica/
 F:	include/acpi/
 F:	tools/power/acpi/
 
-ACPI FAN DRIVER
-M:	Zhang Rui <rui.zhang@intel.com>
-L:	linux-acpi@vger.kernel.org
-S:	Supported
-W:	https://01.org/linux-acpi
-B:	https://bugzilla.kernel.org
-F:	drivers/acpi/fan.c
-
 ACPI FOR ARM64 (ACPI/arm64)
 M:	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
 M:	Hanjun Guo <guohanjun@huawei.com>
@@ -428,14 +420,6 @@ W:	https://01.org/linux-acpi
 B:	https://bugzilla.kernel.org
 F:	drivers/acpi/*thermal*
 
-ACPI VIDEO DRIVER
-M:	Zhang Rui <rui.zhang@intel.com>
-L:	linux-acpi@vger.kernel.org
-S:	Supported
-W:	https://01.org/linux-acpi
-B:	https://bugzilla.kernel.org
-F:	drivers/acpi/acpi_video.c
-
 ACPI VIOT DRIVER
 M:	Jean-Philippe Brucker <jean-philippe@linaro.org>
 L:	linux-acpi@vger.kernel.org

arch/x86/kernel/acpi/boot.c

@@ -62,6 +62,7 @@ int acpi_fix_pin2_polarity __initdata;
 
 #ifdef CONFIG_X86_LOCAL_APIC
 static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE;
+static bool acpi_support_online_capable;
 #endif
 
 #ifdef CONFIG_X86_IO_APIC
@@ -138,6 +139,8 @@ static int __init acpi_parse_madt(struct acpi_table_header *table)
 
 		pr_debug("Local APIC address 0x%08x\n", madt->address);
 	}
+	if (madt->header.revision >= 5)
+		acpi_support_online_capable = true;
 
 	default_acpi_madt_oem_check(madt->header.oem_id,
 				    madt->header.oem_table_id);
@@ -239,6 +242,12 @@ acpi_parse_lapic(union acpi_subtable_headers * header, const unsigned long end)
 	if (processor->id == 0xff)
 		return 0;
 
+	/* don't register processors that can not be onlined */
+	if (acpi_support_online_capable &&
+	    !(processor->lapic_flags & ACPI_MADT_ENABLED) &&
+	    !(processor->lapic_flags & ACPI_MADT_ONLINE_CAPABLE))
+		return 0;
+
 	/*
 	 * We need to register disabled CPU as well to permit
 	 * counting disabled CPUs. This allows us to size

arch/x86/kernel/acpi/cstate.c

@@ -79,6 +79,21 @@ void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
 		 */
 		flags->bm_control = 0;
 	}
+	if (c->x86_vendor == X86_VENDOR_AMD && c->x86 >= 0x17) {
+		/*
+		 * For all AMD Zen or newer CPUs that support C3, caches
+		 * should not be flushed by software while entering C3
+		 * type state. Set bm->check to 1 so that kernel doesn't
+		 * need to execute cache flush operation.
+		 */
+		flags->bm_check = 1;
+		/*
+		 * In current AMD C state implementation ARB_DIS is no longer
+		 * used. So set bm_control to zero to indicate ARB_DIS is not
+		 * required while entering C3 type state.
+		 */
+		flags->bm_control = 0;
+	}
 }
 EXPORT_SYMBOL(acpi_processor_power_init_bm_check);
 

drivers/acpi/Kconfig

@@ -71,7 +71,7 @@ config ACPI_DEBUGGER
 if ACPI_DEBUGGER
 
 config ACPI_DEBUGGER_USER
-	tristate "Userspace debugger accessiblity"
+	tristate "Userspace debugger accessibility"
 	depends on DEBUG_FS
 	help
 	  Export /sys/kernel/debug/acpi/acpidbg for userspace utilities

drivers/acpi/ac.c

@@ -61,6 +61,7 @@ static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume);
 
 static int ac_sleep_before_get_state_ms;
 static int ac_check_pmic = 1;
+static int ac_only;
 
 static struct acpi_driver acpi_ac_driver = {
 	.name = "ac",
@@ -93,6 +94,11 @@ static int acpi_ac_get_state(struct acpi_ac *ac)
 	if (!ac)
 		return -EINVAL;
 
+	if (ac_only) {
+		ac->state = 1;
+		return 0;
+	}
+
 	status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL,
 				       &ac->state);
 	if (ACPI_FAILURE(status)) {
@@ -200,6 +206,12 @@ static int __init ac_do_not_check_pmic_quirk(const struct dmi_system_id *d)
 	return 0;
 }
 
+static int __init ac_only_quirk(const struct dmi_system_id *d)
+{
+	ac_only = 1;
+	return 0;
+}
+
 /* Please keep this list alphabetically sorted */
 static const struct dmi_system_id ac_dmi_table[]  __initconst = {
 	{
@@ -209,6 +221,13 @@ static const struct dmi_system_id ac_dmi_table[]  __initconst = {
 			DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
 		},
 	},
+	{
+		/* Kodlix GK45 returning incorrect state */
+		.callback = ac_only_quirk,
+		.matches = {
+			DMI_MATCH(DMI_PRODUCT_NAME, "GK45"),
+		},
+	},
 	{
 		/* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
 		.callback = ac_do_not_check_pmic_quirk,

drivers/acpi/acpi_lpss.c

@@ -712,14 +712,13 @@ static void __lpss_reg_write(u32 val, struct lpss_private_data *pdata,
 
 static int lpss_reg_read(struct device *dev, unsigned int reg, u32 *val)
 {
-	struct acpi_device *adev;
+	struct acpi_device *adev = ACPI_COMPANION(dev);
 	struct lpss_private_data *pdata;
 	unsigned long flags;
 	int ret;
 
-	ret = acpi_bus_get_device(ACPI_HANDLE(dev), &adev);
-	if (WARN_ON(ret))
-		return ret;
+	if (WARN_ON(!adev))
+		return -ENODEV;
 
 	spin_lock_irqsave(&dev->power.lock, flags);
 	if (pm_runtime_suspended(dev)) {
@@ -732,6 +731,7 @@ static int lpss_reg_read(struct device *dev, unsigned int reg, u32 *val)
 		goto out;
 	}
 	*val = __lpss_reg_read(pdata, reg);
+	ret = 0;
 
  out:
 	spin_unlock_irqrestore(&dev->power.lock, flags);
@@ -750,7 +750,7 @@ static ssize_t lpss_ltr_show(struct device *dev, struct device_attribute *attr,
 	if (ret)
 		return ret;
 
-	return snprintf(buf, PAGE_SIZE, "%08x\n", ltr_value);
+	return sysfs_emit(buf, "%08x\n", ltr_value);
 }
 
 static ssize_t lpss_ltr_mode_show(struct device *dev,
@@ -1266,7 +1266,8 @@ static int acpi_lpss_platform_notify(struct notifier_block *nb,
 	if (!id || !id->driver_data)
 		return 0;
 
-	if (acpi_bus_get_device(ACPI_HANDLE(&pdev->dev), &adev))
+	adev = ACPI_COMPANION(&pdev->dev);
+	if (!adev)
 		return 0;
 
 	pdata = acpi_driver_data(adev);

drivers/acpi/acpi_pnp.c

@@ -156,8 +156,6 @@ static const struct acpi_device_id acpi_pnp_device_ids[] = {
 	{"BRI0A49"},		/* Boca Complete Ofc Communicator 14.4 Data-FAX */
 	{"BRI1400"},		/* Boca Research 33,600 ACF Modem */
 	{"BRI3400"},		/* Boca 33.6 Kbps Internal FD34FSVD */
-	{"BRI0A49"},		/* Boca 33.6 Kbps Internal FD34FSVD */
-	{"BDP3336"},		/* Best Data Products Inc. Smart One 336F PnP Modem */
 	{"CPI4050"},		/* Computer Peripherals Inc. EuroViVa CommCenter-33.6 SP PnP */
 	{"CTL3001"},		/* Creative Labs Phone Blaster 28.8 DSVD PnP Voice */
 	{"CTL3011"},		/* Creative Labs Modem Blaster 28.8 DSVD PnP Voice */

drivers/acpi/acpica/acglobal.h

@@ -226,6 +226,8 @@ extern struct acpi_bit_register_info
     acpi_gbl_bit_register_info[ACPI_NUM_BITREG];
 ACPI_GLOBAL(u8, acpi_gbl_sleep_type_a);
 ACPI_GLOBAL(u8, acpi_gbl_sleep_type_b);
+ACPI_GLOBAL(u8, acpi_gbl_sleep_type_a_s0);
+ACPI_GLOBAL(u8, acpi_gbl_sleep_type_b_s0);
 
 /*****************************************************************************
  *

drivers/acpi/acpica/hwesleep.c

@@ -147,17 +147,13 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state)
 
 acpi_status acpi_hw_extended_wake_prep(u8 sleep_state)
 {
-	acpi_status status;
 	u8 sleep_type_value;
 
 	ACPI_FUNCTION_TRACE(hw_extended_wake_prep);
 
-	status = acpi_get_sleep_type_data(ACPI_STATE_S0,
-					  &acpi_gbl_sleep_type_a,
-					  &acpi_gbl_sleep_type_b);
-	if (ACPI_SUCCESS(status)) {
+	if (acpi_gbl_sleep_type_a_s0 != ACPI_SLEEP_TYPE_INVALID) {
 		sleep_type_value =
-		    ((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) &
+		    ((acpi_gbl_sleep_type_a_s0 << ACPI_X_SLEEP_TYPE_POSITION) &
 		     ACPI_X_SLEEP_TYPE_MASK);
 
 		(void)acpi_write((u64)(sleep_type_value | ACPI_X_SLEEP_ENABLE),

drivers/acpi/acpica/hwsleep.c

@@ -179,7 +179,7 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
 
 acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state)
 {
-	acpi_status status;
+	acpi_status status = AE_OK;
 	struct acpi_bit_register_info *sleep_type_reg_info;
 	struct acpi_bit_register_info *sleep_enable_reg_info;
 	u32 pm1a_control;
@@ -192,10 +192,7 @@ acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state)
 	 * This is unclear from the ACPI Spec, but it is required
 	 * by some machines.
 	 */
-	status = acpi_get_sleep_type_data(ACPI_STATE_S0,
-					  &acpi_gbl_sleep_type_a,
-					  &acpi_gbl_sleep_type_b);
-	if (ACPI_SUCCESS(status)) {
+	if (acpi_gbl_sleep_type_a_s0 != ACPI_SLEEP_TYPE_INVALID) {
 		sleep_type_reg_info =
 		    acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
 		sleep_enable_reg_info =
@@ -216,9 +213,9 @@ acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state)
 
 			/* Insert the SLP_TYP bits */
 
-			pm1a_control |= (acpi_gbl_sleep_type_a <<
+			pm1a_control |= (acpi_gbl_sleep_type_a_s0 <<
 					 sleep_type_reg_info->bit_position);
-			pm1b_control |= (acpi_gbl_sleep_type_b <<
+			pm1b_control |= (acpi_gbl_sleep_type_b_s0 <<
 					 sleep_type_reg_info->bit_position);
 
 			/* Write the control registers and ignore any errors */

drivers/acpi/acpica/hwxfsleep.c

@@ -217,6 +217,13 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
 		return_ACPI_STATUS(status);
 	}
 
+	status = acpi_get_sleep_type_data(ACPI_STATE_S0,
+					  &acpi_gbl_sleep_type_a_s0,
+					  &acpi_gbl_sleep_type_b_s0);
+	if (ACPI_FAILURE(status)) {
+		acpi_gbl_sleep_type_a_s0 = ACPI_SLEEP_TYPE_INVALID;
+	}
+
 	/* Execute the _PTS method (Prepare To Sleep) */
 
 	arg_list.count = 1;

drivers/acpi/acpica/utosi.c

@@ -73,6 +73,7 @@ static struct acpi_interface_info acpi_default_supported_interfaces[] = {
 	{"Windows 2018", NULL, 0, ACPI_OSI_WIN_10_RS4},	/* Windows 10 version 1803 - Added 11/2018 */
 	{"Windows 2018.2", NULL, 0, ACPI_OSI_WIN_10_RS5},	/* Windows 10 version 1809 - Added 11/2018 */
 	{"Windows 2019", NULL, 0, ACPI_OSI_WIN_10_19H1},	/* Windows 10 version 1903 - Added 08/2019 */
+	{"Windows 2020", NULL, 0, ACPI_OSI_WIN_10_20H1},	/* Windows 10 version 2004 - Added 08/2021 */
 
 	/* Feature Group Strings */
 

drivers/acpi/apei/einj.c

@@ -28,9 +28,10 @@
 #undef pr_fmt
 #define pr_fmt(fmt) "EINJ: " fmt
 
-#define SPIN_UNIT		100			/* 100ns */
-/* Firmware should respond within 1 milliseconds */
-#define FIRMWARE_TIMEOUT	(1 * NSEC_PER_MSEC)
+#define SLEEP_UNIT_MIN		1000			/* 1ms */
+#define SLEEP_UNIT_MAX		5000			/* 5ms */
+/* Firmware should respond within 1 seconds */
+#define FIRMWARE_TIMEOUT	(1 * USEC_PER_SEC)
 #define ACPI5_VENDOR_BIT	BIT(31)
 #define MEM_ERROR_MASK		(ACPI_EINJ_MEMORY_CORRECTABLE | \
 				ACPI_EINJ_MEMORY_UNCORRECTABLE | \
@@ -171,13 +172,13 @@ static int einj_get_available_error_type(u32 *type)
 
 static int einj_timedout(u64 *t)
 {
-	if ((s64)*t < SPIN_UNIT) {
+	if ((s64)*t < SLEEP_UNIT_MIN) {
 		pr_warn(FW_WARN "Firmware does not respond in time\n");
 		return 1;
 	}
-	*t -= SPIN_UNIT;
-	ndelay(SPIN_UNIT);
-	touch_nmi_watchdog();
+	*t -= SLEEP_UNIT_MIN;
+	usleep_range(SLEEP_UNIT_MIN, SLEEP_UNIT_MAX);
+
 	return 0;
 }
 

drivers/acpi/apei/hest.c

@@ -86,7 +86,9 @@ static int hest_esrc_len(struct acpi_hest_header *hest_hdr)
 	return len;
 };
 
-int apei_hest_parse(apei_hest_func_t func, void *data)
+typedef int (*apei_hest_func_t)(struct acpi_hest_header *hest_hdr, void *data);
+
+static int apei_hest_parse(apei_hest_func_t func, void *data)
 {
 	struct acpi_hest_header *hest_hdr;
 	int i, rc, len;
@@ -121,7 +123,6 @@ int apei_hest_parse(apei_hest_func_t func, void *data)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(apei_hest_parse);
 
 /*
  * Check if firmware advertises firmware first mode. We need FF bit to be set

drivers/acpi/battery.c

@@ -169,7 +169,7 @@ static int acpi_battery_is_charged(struct acpi_battery *battery)
 		return 1;
 
 	/* fallback to using design values for broken batteries */
-	if (battery->design_capacity == battery->capacity_now)
+	if (battery->design_capacity <= battery->capacity_now)
 		return 1;
 
 	/* we don't do any sort of metric based on percentages */

drivers/acpi/dock.c

@@ -492,7 +492,7 @@ static ssize_t docked_show(struct device *dev,
 	struct acpi_device *adev = NULL;
 
 	acpi_bus_get_device(dock_station->handle, &adev);
-	return snprintf(buf, PAGE_SIZE, "%u\n", acpi_device_enumerated(adev));
+	return sysfs_emit(buf, "%u\n", acpi_device_enumerated(adev));
 }
 static DEVICE_ATTR_RO(docked);
 
@@ -504,7 +504,7 @@ static ssize_t flags_show(struct device *dev,
 {
 	struct dock_station *dock_station = dev->platform_data;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", dock_station->flags);
+	return sysfs_emit(buf, "%d\n", dock_station->flags);
 
 }
 static DEVICE_ATTR_RO(flags);
@@ -543,7 +543,7 @@ static ssize_t uid_show(struct device *dev,
 	if (ACPI_FAILURE(status))
 		return 0;
 
-	return snprintf(buf, PAGE_SIZE, "%llx\n", lbuf);
+	return sysfs_emit(buf, "%llx\n", lbuf);
 }
 static DEVICE_ATTR_RO(uid);
 
@@ -562,7 +562,7 @@ static ssize_t type_show(struct device *dev,
 	else
 		type = "unknown";
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", type);
+	return sysfs_emit(buf, "%s\n", type);
 }
 static DEVICE_ATTR_RO(type);
 

drivers/acpi/glue.c

@@ -17,6 +17,8 @@
 #include <linux/rwsem.h>
 #include <linux/acpi.h>
 #include <linux/dma-mapping.h>
+#include <linux/pci.h>
+#include <linux/pci-acpi.h>
 #include <linux/platform_device.h>
 
 #include "internal.h"
@@ -111,13 +113,10 @@ struct acpi_device *acpi_find_child_device(struct acpi_device *parent,
 		return NULL;
 
 	list_for_each_entry(adev, &parent->children, node) {
-		unsigned long long addr;
-		acpi_status status;
+		acpi_bus_address addr = acpi_device_adr(adev);
 		int score;
 
-		status = acpi_evaluate_integer(adev->handle, METHOD_NAME__ADR,
-					       NULL, &addr);
-		if (ACPI_FAILURE(status) || addr != address)
+		if (!adev->pnp.type.bus_address || addr != address)
 			continue;
 
 		if (!ret) {
@@ -287,12 +286,13 @@ EXPORT_SYMBOL_GPL(acpi_unbind_one);
 
 void acpi_device_notify(struct device *dev)
 {
-	struct acpi_bus_type *type = acpi_get_bus_type(dev);
 	struct acpi_device *adev;
 	int ret;
 
 	ret = acpi_bind_one(dev, NULL);
 	if (ret) {
+		struct acpi_bus_type *type = acpi_get_bus_type(dev);
+
 		if (!type)
 			goto err;
 
@@ -304,17 +304,26 @@ void acpi_device_notify(struct device *dev)
 		ret = acpi_bind_one(dev, adev);
 		if (ret)
 			goto err;
-	}
-	adev = ACPI_COMPANION(dev);
 
-	if (dev_is_platform(dev))
-		acpi_configure_pmsi_domain(dev);
+		if (type->setup) {
+			type->setup(dev);
+			goto done;
+		}
+	} else {
+		adev = ACPI_COMPANION(dev);
+
+		if (dev_is_pci(dev)) {
+			pci_acpi_setup(dev, adev);
+			goto done;
+		} else if (dev_is_platform(dev)) {
+			acpi_configure_pmsi_domain(dev);
+		}
+	}
 
-	if (type && type->setup)
-		type->setup(dev);
-	else if (adev->handler && adev->handler->bind)
+	if (adev->handler && adev->handler->bind)
 		adev->handler->bind(dev);
 
+done:
 	acpi_handle_debug(ACPI_HANDLE(dev), "Bound to device %s\n",
 			  dev_name(dev));
 
@@ -327,16 +336,39 @@ void acpi_device_notify(struct device *dev)
 void acpi_device_notify_remove(struct device *dev)
 {
 	struct acpi_device *adev = ACPI_COMPANION(dev);
-	struct acpi_bus_type *type;
 
 	if (!adev)
 		return;
 
-	type = acpi_get_bus_type(dev);
-	if (type && type->cleanup)
-		type->cleanup(dev);
+	if (dev_is_pci(dev))
+		pci_acpi_cleanup(dev, adev);
 	else if (adev->handler && adev->handler->unbind)
 		adev->handler->unbind(dev);
 
 	acpi_unbind_one(dev);
 }
+
+int acpi_dev_turn_off_if_unused(struct device *dev, void *not_used)
+{
+	struct acpi_device *adev = to_acpi_device(dev);
+
+	/*
+	 * Skip device objects with device IDs, because they may be in use even
+	 * if they are not companions of any physical device objects.
+	 */
+	if (adev->pnp.type.hardware_id)
+		return 0;
+
+	mutex_lock(&adev->physical_node_lock);
+
+	/*
+	 * Device objects without device IDs are not in use if they have no
+	 * corresponding physical device objects.
+	 */
+	if (list_empty(&adev->physical_node_list))
+		acpi_device_set_power(adev, ACPI_STATE_D3_COLD);
+
+	mutex_unlock(&adev->physical_node_lock);
+
+	return 0;
+}

drivers/acpi/internal.h

@@ -117,6 +117,7 @@ bool acpi_device_is_battery(struct acpi_device *adev);
 bool acpi_device_is_first_physical_node(struct acpi_device *adev,
 					const struct device *dev);
 int acpi_bus_register_early_device(int type);
+int acpi_dev_turn_off_if_unused(struct device *dev, void *not_used);
 
 /* --------------------------------------------------------------------------
                      Device Matching and Notification

drivers/acpi/power.c

@@ -52,7 +52,6 @@ struct acpi_power_resource {
 	u32 order;
 	unsigned int ref_count;
 	u8 state;
-	bool wakeup_enabled;
 	struct mutex resource_lock;
 	struct list_head dependents;
 };
@@ -615,20 +614,19 @@ int acpi_power_wakeup_list_init(struct list_head *list, int *system_level_p)
 
 	list_for_each_entry(entry, list, node) {
 		struct acpi_power_resource *resource = entry->resource;
-		int result;
 		u8 state;
 
 		mutex_lock(&resource->resource_lock);
 
-		result = acpi_power_get_state(resource, &state);
-		if (result) {
-			mutex_unlock(&resource->resource_lock);
-			return result;
-		}
-		if (state == ACPI_POWER_RESOURCE_STATE_ON) {
-			resource->ref_count++;
-			resource->wakeup_enabled = true;
-		}
+		/*
+		 * Make sure that the power resource state and its reference
+		 * counter value are consistent with each other.
+		 */
+		if (!resource->ref_count &&
+		    !acpi_power_get_state(resource, &state) &&
+		    state == ACPI_POWER_RESOURCE_STATE_ON)
+			__acpi_power_off(resource);
+
 		if (system_level > resource->system_level)
 			system_level = resource->system_level;
 
@@ -711,7 +709,6 @@ int acpi_device_sleep_wake(struct acpi_device *dev,
  */
 int acpi_enable_wakeup_device_power(struct acpi_device *dev, int sleep_state)
 {
-	struct acpi_power_resource_entry *entry;
 	int err = 0;
 
 	if (!dev || !dev->wakeup.flags.valid)
@@ -722,33 +719,22 @@ int acpi_enable_wakeup_device_power(struct acpi_device *dev, int sleep_state)
 	if (dev->wakeup.prepare_count++)
 		goto out;
 
-	list_for_each_entry(entry, &dev->wakeup.resources, node) {
-		struct acpi_power_resource *resource = entry->resource;
-
-		mutex_lock(&resource->resource_lock);
-
-		if (!resource->wakeup_enabled) {
-			err = acpi_power_on_unlocked(resource);
-			if (!err)
-				resource->wakeup_enabled = true;
-		}
-
-		mutex_unlock(&resource->resource_lock);
-
-		if (err) {
-			dev_err(&dev->dev,
-				"Cannot turn wakeup power resources on\n");
-			dev->wakeup.flags.valid = 0;
-			goto out;
-		}
+	err = acpi_power_on_list(&dev->wakeup.resources);
+	if (err) {
+		dev_err(&dev->dev, "Cannot turn on wakeup power resources\n");
+		dev->wakeup.flags.valid = 0;
+		goto out;
 	}
+
 	/*
 	 * Passing 3 as the third argument below means the device may be
 	 * put into arbitrary power state afterward.
 	 */
 	err = acpi_device_sleep_wake(dev, 1, sleep_state, 3);
-	if (err)
+	if (err) {
+		acpi_power_off_list(&dev->wakeup.resources);
 		dev->wakeup.prepare_count = 0;
+	}
 
  out:
 	mutex_unlock(&acpi_device_lock);
@@ -771,39 +757,33 @@ int acpi_disable_wakeup_device_power(struct acpi_device *dev)
 
 	mutex_lock(&acpi_device_lock);
 
-	if (--dev->wakeup.prepare_count > 0)
+	if (dev->wakeup.prepare_count > 1) {
+		dev->wakeup.prepare_count--;
 		goto out;
+	}
 
-	/*
-	 * Executing the code below even if prepare_count is already zero when
-	 * the function is called may be useful, for example for initialisation.
-	 */
-	if (dev->wakeup.prepare_count < 0)
-		dev->wakeup.prepare_count = 0;
+	/* Do nothing if wakeup power has not been enabled for this device. */
+	if (!dev->wakeup.prepare_count)
+		goto out;
 
 	err = acpi_device_sleep_wake(dev, 0, 0, 0);
 	if (err)
 		goto out;
 
+	/*
+	 * All of the power resources in the list need to be turned off even if
+	 * there are errors.
+	 */
 	list_for_each_entry(entry, &dev->wakeup.resources, node) {
-		struct acpi_power_resource *resource = entry->resource;
-
-		mutex_lock(&resource->resource_lock);
-
-		if (resource->wakeup_enabled) {
-			err = acpi_power_off_unlocked(resource);
-			if (!err)
-				resource->wakeup_enabled = false;
-		}
-
-		mutex_unlock(&resource->resource_lock);
+		int ret;
 
-		if (err) {
-			dev_err(&dev->dev,
-				"Cannot turn wakeup power resources off\n");
-			dev->wakeup.flags.valid = 0;
-			break;
-		}
+		ret = acpi_power_off(entry->resource);
+		if (ret && !err)
+			err = ret;
+	}
+	if (err) {
+		dev_err(&dev->dev, "Cannot turn off wakeup power resources\n");
+		dev->wakeup.flags.valid = 0;
 	}
 
  out:
@@ -943,6 +923,7 @@ struct acpi_device *acpi_add_power_resource(acpi_handle handle)
 	union acpi_object acpi_object;
 	struct acpi_buffer buffer = { sizeof(acpi_object), &acpi_object };
 	acpi_status status;
+	u8 state_dummy;
 	int result;
 
 	acpi_bus_get_device(handle, &device);
@@ -971,6 +952,10 @@ struct acpi_device *acpi_add_power_resource(acpi_handle handle)
 	resource->order = acpi_object.power_resource.resource_order;
 	resource->state = ACPI_POWER_RESOURCE_STATE_UNKNOWN;
 
+	/* Get the initial state or just flip it on if that fails. */
+	if (acpi_power_get_state(resource, &state_dummy))
+		__acpi_power_on(resource);
+
 	pr_info("%s [%s]\n", acpi_device_name(device), acpi_device_bid(device));
 
 	device->flags.match_driver = true;

drivers/acpi/prmt.c

@@ -49,7 +49,6 @@ struct prm_context_buffer {
 };
 #pragma pack()
 
-
 static LIST_HEAD(prm_module_list);
 
 struct prm_handler_info {
@@ -73,7 +72,6 @@ struct prm_module_info {
 	struct prm_handler_info handlers[];
 };
 
-
 static u64 efi_pa_va_lookup(u64 pa)
 {
 	efi_memory_desc_t *md;
@@ -88,7 +86,6 @@ static u64 efi_pa_va_lookup(u64 pa)
 	return 0;
 }
 
-
 #define get_first_handler(a) ((struct acpi_prmt_handler_info *) ((char *) (a) + a->handler_info_offset))
 #define get_next_handler(a) ((struct acpi_prmt_handler_info *) (sizeof(struct acpi_prmt_handler_info) + (char *) a))
 
@@ -99,7 +96,7 @@ acpi_parse_prmt(union acpi_subtable_headers *header, const unsigned long end)
 	struct acpi_prmt_handler_info *handler_info;
 	struct prm_handler_info *th;
 	struct prm_module_info *tm;
-	u64 mmio_count = 0;
+	u64 *mmio_count;
 	u64 cur_handler = 0;
 	u32 module_info_size = 0;
 	u64 mmio_range_size = 0;
@@ -108,6 +105,8 @@ acpi_parse_prmt(union acpi_subtable_headers *header, const unsigned long end)
 	module_info = (struct acpi_prmt_module_info *) header;
 	module_info_size = struct_size(tm, handlers, module_info->handler_info_count);
 	tm = kmalloc(module_info_size, GFP_KERNEL);
+	if (!tm)
+		goto parse_prmt_out1;
 
 	guid_copy(&tm->guid, (guid_t *) module_info->module_guid);
 	tm->major_rev = module_info->major_rev;
@@ -120,14 +119,24 @@ acpi_parse_prmt(union acpi_subtable_headers *header, const unsigned long end)
 		 * Each module is associated with a list of addr
 		 * ranges that it can use during the service
 		 */
-		mmio_count = *(u64 *) memremap(module_info->mmio_list_pointer, 8, MEMREMAP_WB);
-		mmio_range_size = struct_size(tm->mmio_info, addr_ranges, mmio_count);
+		mmio_count = (u64 *) memremap(module_info->mmio_list_pointer, 8, MEMREMAP_WB);
+		if (!mmio_count)
+			goto parse_prmt_out2;
+
+		mmio_range_size = struct_size(tm->mmio_info, addr_ranges, *mmio_count);
 		tm->mmio_info = kmalloc(mmio_range_size, GFP_KERNEL);
+		if (!tm->mmio_info)
+			goto parse_prmt_out3;
+
 		temp_mmio = memremap(module_info->mmio_list_pointer, mmio_range_size, MEMREMAP_WB);
+		if (!temp_mmio)
+			goto parse_prmt_out4;
 		memmove(tm->mmio_info, temp_mmio, mmio_range_size);
 	} else {
-		mmio_range_size = struct_size(tm->mmio_info, addr_ranges, mmio_count);
-		tm->mmio_info = kmalloc(mmio_range_size, GFP_KERNEL);
+		tm->mmio_info = kmalloc(sizeof(*tm->mmio_info), GFP_KERNEL);
+		if (!tm->mmio_info)
+			goto parse_prmt_out2;
+
 		tm->mmio_info->mmio_count = 0;
 	}
 
@@ -145,6 +154,15 @@ acpi_parse_prmt(union acpi_subtable_headers *header, const unsigned long end)
 	} while (++cur_handler < tm->handler_count && (handler_info = get_next_handler(handler_info)));
 
 	return 0;
+
+parse_prmt_out4:
+	kfree(tm->mmio_info);
+parse_prmt_out3:
+	memunmap(mmio_count);
+parse_prmt_out2:
+	kfree(tm);
+parse_prmt_out1:
+	return -ENOMEM;
 }
 
 #define GET_MODULE	0
@@ -171,7 +189,6 @@ static void *find_guid_info(const guid_t *guid, u8 mode)
 	return NULL;
 }
 
-
 static struct prm_module_info *find_prm_module(const guid_t *guid)
 {
 	return (struct prm_module_info *)find_guid_info(guid, GET_MODULE);

drivers/acpi/processor_idle.c

@@ -789,7 +789,8 @@ static int acpi_processor_setup_cstates(struct acpi_processor *pr)
 		state->enter = acpi_idle_enter;
 
 		state->flags = 0;
-		if (cx->type == ACPI_STATE_C1 || cx->type == ACPI_STATE_C2) {
+		if (cx->type == ACPI_STATE_C1 || cx->type == ACPI_STATE_C2 ||
+		    cx->type == ACPI_STATE_C3) {
 			state->enter_dead = acpi_idle_play_dead;
 			drv->safe_state_index = count;
 		}

drivers/acpi/resource.c

@@ -16,6 +16,7 @@
 #include <linux/ioport.h>
 #include <linux/slab.h>
 #include <linux/irq.h>
+#include <linux/dmi.h>
 
 #ifdef CONFIG_X86
 #define valid_IRQ(i) (((i) != 0) && ((i) != 2))
@@ -380,9 +381,58 @@ unsigned int acpi_dev_get_irq_type(int triggering, int polarity)
 }
 EXPORT_SYMBOL_GPL(acpi_dev_get_irq_type);
 
+static const struct dmi_system_id medion_laptop[] = {
+	{
+		.ident = "MEDION P15651",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
+			DMI_MATCH(DMI_BOARD_NAME, "M15T"),
+		},
+	},
+	{
+		.ident = "MEDION S17405",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
+			DMI_MATCH(DMI_BOARD_NAME, "M17T"),
+		},
+	},
+	{ }
+};
+
+struct irq_override_cmp {
+	const struct dmi_system_id *system;
+	unsigned char irq;
+	unsigned char triggering;
+	unsigned char polarity;
+	unsigned char shareable;
+};
+
+static const struct irq_override_cmp skip_override_table[] = {
+	{ medion_laptop, 1, ACPI_LEVEL_SENSITIVE, ACPI_ACTIVE_LOW, 0 },
+};
+
+static bool acpi_dev_irq_override(u32 gsi, u8 triggering, u8 polarity,
+				  u8 shareable)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(skip_override_table); i++) {
+		const struct irq_override_cmp *entry = &skip_override_table[i];
+
+		if (dmi_check_system(entry->system) &&
+		    entry->irq == gsi &&
+		    entry->triggering == triggering &&
+		    entry->polarity == polarity &&
+		    entry->shareable == shareable)
+			return false;
+	}
+
+	return true;
+}
+
 static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
 				     u8 triggering, u8 polarity, u8 shareable,
-				     bool legacy)
+				     bool check_override)
 {
 	int irq, p, t;
 
@@ -401,7 +451,9 @@ static void acpi_dev_get_irqresource(struct resource *res, u32 gsi,
 	 * using extended IRQ descriptors we take the IRQ configuration
 	 * from _CRS directly.
 	 */
-	if (legacy && !acpi_get_override_irq(gsi, &t, &p)) {
+	if (check_override &&
+	    acpi_dev_irq_override(gsi, triggering, polarity, shareable) &&
+	    !acpi_get_override_irq(gsi, &t, &p)) {
 		u8 trig = t ? ACPI_LEVEL_SENSITIVE : ACPI_EDGE_SENSITIVE;
 		u8 pol = p ? ACPI_ACTIVE_LOW : ACPI_ACTIVE_HIGH;
 

drivers/acpi/scan.c

@@ -2560,6 +2560,12 @@ int __init acpi_scan_init(void)
 		}
 	}
 
+	/*
+	 * Make sure that power management resources are not blocked by ACPI
+	 * device objects with no users.
+	 */
+	bus_for_each_dev(&acpi_bus_type, NULL, NULL, acpi_dev_turn_off_if_unused);
+
 	acpi_turn_off_unused_power_resources();
 
 	acpi_scan_initialized = true;

drivers/acpi/sleep.c

@@ -815,14 +815,18 @@ void __weak acpi_s2idle_setup(void)
 
 static void acpi_sleep_suspend_setup(void)
 {
+	bool suspend_ops_needed = false;
 	int i;
 
 	for (i = ACPI_STATE_S1; i < ACPI_STATE_S4; i++)
-		if (acpi_sleep_state_supported(i))
+		if (acpi_sleep_state_supported(i)) {
 			sleep_states[i] = 1;
+			suspend_ops_needed = true;
+		}
 
-	suspend_set_ops(old_suspend_ordering ?
-		&acpi_suspend_ops_old : &acpi_suspend_ops);
+	if (suspend_ops_needed)
+		suspend_set_ops(old_suspend_ordering ?
+				&acpi_suspend_ops_old : &acpi_suspend_ops);
 
 	acpi_s2idle_setup();
 }

drivers/gpio/gpio-amdpt.c

@@ -72,12 +72,10 @@ static void pt_gpio_free(struct gpio_chip *gc, unsigned offset)
 static int pt_gpio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct acpi_device *acpi_dev;
-	acpi_handle handle = ACPI_HANDLE(dev);
 	struct pt_gpio_chip *pt_gpio;
 	int ret = 0;
 
-	if (acpi_bus_get_device(handle, &acpi_dev)) {
+	if (!ACPI_COMPANION(dev)) {
 		dev_err(dev, "PT GPIO device node not found\n");
 		return -ENODEV;
 	}

drivers/gpu/drm/nouveau/nouveau_acpi.c

@@ -364,7 +364,6 @@ void *
 nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector)
 {
 	struct acpi_device *acpidev;
-	acpi_handle handle;
 	int type, ret;
 	void *edid;
 
@@ -377,12 +376,8 @@ nouveau_acpi_edid(struct drm_device *dev, struct drm_connector *connector)
 		return NULL;
 	}
 
-	handle = ACPI_HANDLE(dev->dev);
-	if (!handle)
-		return NULL;
-
-	ret = acpi_bus_get_device(handle, &acpidev);
-	if (ret)
+	acpidev = ACPI_COMPANION(dev->dev);
+	if (!acpidev)
 		return NULL;
 
 	ret = acpi_video_get_edid(acpidev, type, -1, &edid);

drivers/pci/pci-acpi.c

@@ -1356,13 +1356,9 @@ static void pci_acpi_set_external_facing(struct pci_dev *dev)
 		dev->external_facing = 1;
 }
 
-static void pci_acpi_setup(struct device *dev)
+void pci_acpi_setup(struct device *dev, struct acpi_device *adev)
 {
 	struct pci_dev *pci_dev = to_pci_dev(dev);
-	struct acpi_device *adev = ACPI_COMPANION(dev);
-
-	if (!adev)
-		return;
 
 	pci_acpi_optimize_delay(pci_dev, adev->handle);
 	pci_acpi_set_external_facing(pci_dev);
@@ -1386,14 +1382,10 @@ static void pci_acpi_setup(struct device *dev)
 	acpi_device_power_add_dependent(adev, dev);
 }
 
-static void pci_acpi_cleanup(struct device *dev)
+void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev)
 {
-	struct acpi_device *adev = ACPI_COMPANION(dev);
 	struct pci_dev *pci_dev = to_pci_dev(dev);
 
-	if (!adev)
-		return;
-
 	pci_acpi_remove_edr_notifier(pci_dev);
 	pci_acpi_remove_pm_notifier(adev);
 	if (adev->wakeup.flags.valid) {
@@ -1405,20 +1397,6 @@ static void pci_acpi_cleanup(struct device *dev)
 	}
 }
 
-static bool pci_acpi_bus_match(struct device *dev)
-{
-	return dev_is_pci(dev);
-}
-
-static struct acpi_bus_type acpi_pci_bus = {
-	.name = "PCI",
-	.match = pci_acpi_bus_match,
-	.find_companion = acpi_pci_find_companion,
-	.setup = pci_acpi_setup,
-	.cleanup = pci_acpi_cleanup,
-};
-
-
 static struct fwnode_handle *(*pci_msi_get_fwnode_cb)(struct device *dev);
 
 /**
@@ -1460,8 +1438,6 @@ struct irq_domain *pci_host_bridge_acpi_msi_domain(struct pci_bus *bus)
 
 static int __init acpi_pci_init(void)
 {
-	int ret;
-
 	if (acpi_gbl_FADT.boot_flags & ACPI_FADT_NO_MSI) {
 		pr_info("ACPI FADT declares the system doesn't support MSI, so disable it\n");
 		pci_no_msi();
@@ -1472,8 +1448,7 @@ static int __init acpi_pci_init(void)
 		pcie_no_aspm();
 	}
 
-	ret = register_acpi_bus_type(&acpi_pci_bus);
-	if (ret)
+	if (acpi_pci_disabled)
 		return 0;
 
 	pci_set_platform_pm(&acpi_pci_platform_pm);

drivers/perf/qcom_l2_pmu.c

@@ -840,17 +840,14 @@ static int l2_cache_pmu_probe_cluster(struct device *dev, void *data)
 {
 	struct platform_device *pdev = to_platform_device(dev->parent);
 	struct platform_device *sdev = to_platform_device(dev);
+	struct acpi_device *adev = ACPI_COMPANION(dev);
 	struct l2cache_pmu *l2cache_pmu = data;
 	struct cluster_pmu *cluster;
-	struct acpi_device *device;
 	unsigned long fw_cluster_id;
 	int err;
 	int irq;
 
-	if (acpi_bus_get_device(ACPI_HANDLE(dev), &device))
-		return -ENODEV;
-
-	if (kstrtoul(device->pnp.unique_id, 10, &fw_cluster_id) < 0) {
+	if (!adev || kstrtoul(adev->pnp.unique_id, 10, &fw_cluster_id) < 0) {
 		dev_err(&pdev->dev, "unable to read ACPI uid\n");
 		return -ENODEV;
 	}

include/acpi/acpi_bus.h

@@ -570,7 +570,6 @@ struct acpi_bus_type {
 	bool (*match)(struct device *dev);
 	struct acpi_device * (*find_companion)(struct device *);
 	void (*setup)(struct device *);
-	void (*cleanup)(struct device *);
 };
 int register_acpi_bus_type(struct acpi_bus_type *);
 int unregister_acpi_bus_type(struct acpi_bus_type *);

include/acpi/acpixf.h

@@ -12,7 +12,7 @@
 
 /* Current ACPICA subsystem version in YYYYMMDD format */
 
-#define ACPI_CA_VERSION                 0x20210730
+#define ACPI_CA_VERSION                 0x20210930
 
 #include <acpi/acconfig.h>
 #include <acpi/actypes.h>

include/acpi/actbl2.h

@@ -35,6 +35,7 @@
 #define ACPI_SIG_MSCT           "MSCT"	/* Maximum System Characteristics Table */
 #define ACPI_SIG_MSDM           "MSDM"	/* Microsoft Data Management Table */
 #define ACPI_SIG_NFIT           "NFIT"	/* NVDIMM Firmware Interface Table */
+#define ACPI_SIG_NHLT           "NHLT"	/* Non HD Audio Link Table */
 #define ACPI_SIG_PCCT           "PCCT"	/* Platform Communications Channel Table */
 #define ACPI_SIG_PDTT           "PDTT"	/* Platform Debug Trigger Table */
 #define ACPI_SIG_PHAT           "PHAT"	/* Platform Health Assessment Table */
@@ -46,7 +47,6 @@
 #define ACPI_SIG_SBST           "SBST"	/* Smart Battery Specification Table */
 #define ACPI_SIG_SDEI           "SDEI"	/* Software Delegated Exception Interface Table */
 #define ACPI_SIG_SDEV           "SDEV"	/* Secure Devices table */
-#define ACPI_SIG_NHLT           "NHLT"	/* Non-HDAudio Link Table */
 #define ACPI_SIG_SVKL           "SVKL"	/* Storage Volume Key Location Table */
 
 /*
@@ -978,6 +978,7 @@ struct acpi_madt_multiproc_wakeup_mailbox {
 /* MADT Local APIC flags */
 
 #define ACPI_MADT_ENABLED           (1)	/* 00: Processor is usable if set */
+#define ACPI_MADT_ONLINE_CAPABLE    (2)	/* 01: System HW supports enabling processor at runtime */
 
 /* MADT MPS INTI flags (inti_flags) */
 
@@ -1409,6 +1410,254 @@ struct nfit_device_handle {
 #define ACPI_NFIT_GET_NODE_ID(handle) \
 	(((handle) & ACPI_NFIT_NODE_ID_MASK)        >> ACPI_NFIT_NODE_ID_OFFSET)
 
+/*******************************************************************************
+ *
+ * NHLT - Non HD Audio Link Table
+ *
+ * Conforms to: Intel Smart Sound Technology NHLT Specification
+ * Version 0.8.1, January 2020.
+ *
+ ******************************************************************************/
+
+/* Main table */
+
+struct acpi_table_nhlt {
+	struct acpi_table_header header;	/* Common ACPI table header */
+	u8 endpoint_count;
+};
+
+struct acpi_nhlt_endpoint {
+	u32 descriptor_length;
+	u8 link_type;
+	u8 instance_id;
+	u16 vendor_id;
+	u16 device_id;
+	u16 revision_id;
+	u32 subsystem_id;
+	u8 device_type;
+	u8 direction;
+	u8 virtual_bus_id;
+};
+
+/* Types for link_type field above */
+
+#define ACPI_NHLT_RESERVED_HD_AUDIO         0
+#define ACPI_NHLT_RESERVED_DSP              1
+#define ACPI_NHLT_PDM                       2
+#define ACPI_NHLT_SSP                       3
+#define ACPI_NHLT_RESERVED_SLIMBUS          4
+#define ACPI_NHLT_RESERVED_SOUNDWIRE        5
+#define ACPI_NHLT_TYPE_RESERVED             6	/* 6 and above are reserved */
+
+/* All other values above are reserved */
+
+/* Values for device_id field above */
+
+#define ACPI_NHLT_PDM_DMIC                  0xAE20
+#define ACPI_NHLT_BT_SIDEBAND               0xAE30
+#define ACPI_NHLT_I2S_TDM_CODECS            0xAE23
+
+/* Values for device_type field above */
+
+/* SSP Link */
+
+#define ACPI_NHLT_LINK_BT_SIDEBAND          0
+#define ACPI_NHLT_LINK_FM                   1
+#define ACPI_NHLT_LINK_MODEM                2
+/* 3 is reserved */
+#define ACPI_NHLT_LINK_SSP_ANALOG_CODEC     4
+
+/* PDM Link */
+
+#define ACPI_NHLT_PDM_ON_CAVS_1P8           0
+#define ACPI_NHLT_PDM_ON_CAVS_1P5           1
+
+/* Values for Direction field above */
+
+#define ACPI_NHLT_DIR_RENDER                0
+#define ACPI_NHLT_DIR_CAPTURE               1
+#define ACPI_NHLT_DIR_RENDER_LOOPBACK       2
+#define ACPI_NHLT_DIR_RENDER_FEEDBACK       3
+#define ACPI_NHLT_DIR_RESERVED              4	/* 4 and above are reserved */
+
+struct acpi_nhlt_device_specific_config {
+	u32 capabilities_size;
+	u8 virtual_slot;
+	u8 config_type;
+};
+
+struct acpi_nhlt_device_specific_config_a {
+	u32 capabilities_size;
+	u8 virtual_slot;
+	u8 config_type;
+	u8 array_type;
+};
+
+/* Values for Config Type above */
+
+#define ACPI_NHLT_TYPE_MIC_ARRAY            0x01
+#define ACPI_NHLT_TYPE_GENERIC              0x00
+
+/* Mask for Extension field of array_type */
+
+#define ACPI_NHLT_ARRAY_TYPE_MASK           0x10
+
+struct acpi_nhlt_device_specific_config_b {
+	u32 capabilities_size;
+};
+
+struct acpi_nhlt_device_specific_config_c {
+	u32 capabilities_size;
+	u8 virtual_slot;
+};
+
+struct acpi_nhlt_wave_extensible {
+	u16 format_tag;
+	u16 channel_count;
+	u32 samples_per_sec;
+	u32 avg_bytes_per_sec;
+	u16 block_align;
+	u16 bits_per_sample;
+	u16 extra_format_size;
+	u16 valid_bits_per_sample;
+	u32 channel_mask;
+	u8 sub_format_guid[16];
+};
+
+/* Values for channel_mask above */
+
+#define ACPI_NHLT_SPKR_FRONT_LEFT             0x1
+#define ACPI_NHLT_SPKR_FRONT_RIGHT            0x2
+#define ACPI_NHLT_SPKR_FRONT_CENTER           0x4
+#define ACPI_NHLT_SPKR_LOW_FREQ               0x8
+#define ACPI_NHLT_SPKR_BACK_LEFT              0x10
+#define ACPI_NHLT_SPKR_BACK_RIGHT             0x20
+#define ACPI_NHLT_SPKR_FRONT_LEFT_OF_CENTER   0x40
+#define ACPI_NHLT_SPKR_FRONT_RIGHT_OF_CENTER  0x80
+#define ACPI_NHLT_SPKR_BACK_CENTER            0x100
+#define ACPI_NHLT_SPKR_SIDE_LEFT              0x200
+#define ACPI_NHLT_SPKR_SIDE_RIGHT             0x400
+#define ACPI_NHLT_SPKR_TOP_CENTER             0x800
+#define ACPI_NHLT_SPKR_TOP_FRONT_LEFT         0x1000
+#define ACPI_NHLT_SPKR_TOP_FRONT_CENTER       0x2000
+#define ACPI_NHLT_SPKR_TOP_FRONT_RIGHT        0x4000
+#define ACPI_NHLT_SPKR_TOP_BACK_LEFT          0x8000
+#define ACPI_NHLT_SPKR_TOP_BACK_CENTER        0x10000
+#define ACPI_NHLT_SPKR_TOP_BACK_RIGHT         0x20000
+
+struct acpi_nhlt_format_config {
+	struct acpi_nhlt_wave_extensible format;
+	u32 capability_size;
+	u8 capabilities[];
+};
+
+struct acpi_nhlt_formats_config {
+	u8 formats_count;
+};
+
+struct acpi_nhlt_device_specific_hdr {
+	u8 virtual_slot;
+	u8 config_type;
+};
+
+/* Types for config_type above */
+
+#define ACPI_NHLT_GENERIC                   0
+#define ACPI_NHLT_MIC                       1
+#define ACPI_NHLT_RENDER                    3
+
+struct acpi_nhlt_mic_device_specific_config {
+	struct acpi_nhlt_device_specific_hdr device_config;
+	u8 array_type_ext;
+};
+
+/* Values for array_type_ext above */
+
+#define SMALL_LINEAR_2ELEMENT               0x0A
+#define BIG_LINEAR_2ELEMENT                 0x0B
+#define FIRST_GEOMETRY_LINEAR_4ELEMENT      0x0C
+#define PLANAR_LSHAPED_4ELEMENT             0x0D
+#define SECOND_GEOMETRY_LINEAR_4ELEMENT     0x0E
+#define VENDOR_DEFINED                      0x0F
+#define ARRAY_TYPE_MASK                     0x0F
+#define ARRAY_TYPE_EXT_MASK                 0x10
+
+#define NO_EXTENSION                        0x0
+#define MIC_SNR_SENSITIVITY_EXT             0x1
+
+struct acpi_nhlt_vendor_mic_config {
+	u8 type;
+	u8 panel;
+	u16 speaker_position_distance;	// mm
+	u16 horizontal_offset;	// mm
+	u16 vertical_offset;	// mm
+	u8 frequency_low_band;	// 5*hz
+	u8 frequency_high_band;	// 500*hz
+	u16 direction_angle;	// -180 - + 180
+	u16 elevation_angle;	// -180 - + 180
+	u16 work_vertical_angle_begin;	// -180 - + 180 with 2 deg step
+	u16 work_vertical_angle_end;	// -180 - + 180 with 2 deg step
+	u16 work_horizontal_angle_begin;	// -180 - + 180 with 2 deg step
+	u16 work_horizontal_angle_end;	// -180 - + 180 with 2 deg step
+};
+
+/* Values for Type field above */
+
+#define MIC_OMNIDIRECTIONAL                 0
+#define MIC_SUBCARDIOID                     1
+#define MIC_CARDIOID                        2
+#define MIC_SUPER_CARDIOID                  3
+#define MIC_HYPER_CARDIOID                  4
+#define MIC_8_SHAPED                        5
+#define MIC_VENDOR_DEFINED                  7
+
+/* Values for Panel field above */
+
+#define MIC_TOP                             0
+#define MIC_BOTTOM                          1
+#define MIC_LEFT                            2
+#define MIC_RIGHT                           3
+#define MIC_FRONT                           4
+#define MIC_REAR                            5
+
+struct acpi_nhlt_vendor_mic_device_specific_config {
+	struct acpi_nhlt_mic_device_specific_config mic_array_device_config;
+	u8 number_of_microphones;
+	struct acpi_nhlt_vendor_mic_config mic_config[];	// indexed by number_of_microphones
+};
+
+/* Microphone SNR and Sensitivity extension */
+
+struct acpi_nhlt_mic_snr_sensitivity_extension {
+	u32 SNR;
+	u32 sensitivity;
+};
+
+struct acpi_nhlt_render_feedback_device_specific_config {
+	struct acpi_nhlt_device_specific_config device_config;
+	u8 feedback_virtual_slot;	// render slot in case of capture
+	u16 feedback_channels;	// informative only
+	u16 feedback_valid_bits_per_sample;
+};
+
+/* Linux-specific structures */
+
+struct acpi_nhlt_linux_specific_count {
+	u8 structure_count;
+};
+
+struct acpi_nhlt_linux_specific_data {
+	u8 device_id[16];
+	u8 device_instance_id;
+	u8 device_port_id;
+	u8 filler[18];
+};
+
+struct acpi_nhlt_table_terminator {
+	u32 terminator_value;
+	u32 terminator_signature;
+};
+
 /*******************************************************************************
  *
  * PCCT - Platform Communications Channel Table (ACPI 5.0)

include/acpi/actbl3.h

@@ -191,7 +191,8 @@ enum acpi_srat_type {
 	ACPI_SRAT_TYPE_GICC_AFFINITY = 3,
 	ACPI_SRAT_TYPE_GIC_ITS_AFFINITY = 4,	/* ACPI 6.2 */
 	ACPI_SRAT_TYPE_GENERIC_AFFINITY = 5,	/* ACPI 6.3 */
-	ACPI_SRAT_TYPE_RESERVED = 6	/* 5 and greater are reserved */
+	ACPI_SRAT_TYPE_GENERIC_PORT_AFFINITY = 6,	/* ACPI 6.4 */
+	ACPI_SRAT_TYPE_RESERVED = 7	/* 7 and greater are reserved */
 };
 
 /*
@@ -272,7 +273,11 @@ struct acpi_srat_gic_its_affinity {
 	u32 its_id;
 };
 
-/* 5: Generic Initiator Affinity Structure (ACPI 6.3) */
+/*
+ * Common structure for SRAT subtable types:
+ * 5: ACPI_SRAT_TYPE_GENERIC_AFFINITY
+ * 6: ACPI_SRAT_TYPE_GENERIC_PORT_AFFINITY
+ */
 
 struct acpi_srat_generic_affinity {
 	struct acpi_subtable_header header;

include/acpi/actypes.h

@@ -1281,6 +1281,7 @@ typedef enum {
 #define ACPI_OSI_WIN_10_RS4             0x12
 #define ACPI_OSI_WIN_10_RS5             0x13
 #define ACPI_OSI_WIN_10_19H1            0x14
+#define ACPI_OSI_WIN_10_20H1            0x15
 
 /* Definitions of getopt */
 

include/acpi/apei.h

@@ -37,9 +37,6 @@ void __init acpi_hest_init(void);
 static inline void acpi_hest_init(void) { return; }
 #endif
 
-typedef int (*apei_hest_func_t)(struct acpi_hest_header *hest_hdr, void *data);
-int apei_hest_parse(apei_hest_func_t func, void *data);
-
 int erst_write(const struct cper_record_header *record);
 ssize_t erst_get_record_count(void);
 int erst_get_record_id_begin(int *pos);

include/linux/pci-acpi.h

@@ -84,6 +84,14 @@ extern struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root,
 void acpi_pci_add_bus(struct pci_bus *bus);
 void acpi_pci_remove_bus(struct pci_bus *bus);
 
+#ifdef CONFIG_PCI
+void pci_acpi_setup(struct device *dev, struct acpi_device *adev);
+void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev);
+#else
+static inline void pci_acpi_setup(struct device *dev, struct acpi_device *adev) {}
+static inline void pci_acpi_cleanup(struct device *dev, struct acpi_device *adev) {}
+#endif
+
 #ifdef	CONFIG_ACPI_PCI_SLOT
 void acpi_pci_slot_init(void);
 void acpi_pci_slot_enumerate(struct pci_bus *bus);