Merge tag 'acpi-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI updates from Rafael Wysocki:
"These include a couple of fixes, a new ACPI backlight quirk for Apple
MacbookPro11,2 and Air7,2 and a bunch of cleanups:

- Fix _CPC register setting issue for registers located in memory in
the ACPI CPPC library code (Lifeng Zheng)

- Use DEFINE_SIMPLE_DEV_PM_OPS in the ACPI battery driver, make it
use devm_ for initializing mutexes and allocating driver data, and
make it check the register_pm_notifier() return value (Thomas
Weißschuh, Andy Shevchenko)

- Make the ACPI EC driver support compile-time conditional and allow
ACPI to be built without CONFIG_HAS_IOPORT (Arnd Bergmann)

- Remove a redundant error check from the pfr_telemetry driver (Colin
Ian King)

- Rearrange the processor_perflib code in the ACPI processor driver
to avoid compiling x86-specific code on other architectures (Arnd
Bergmann)

- Add adev NULL check to acpi_quirk_skip_serdev_enumeration() and
make UART skip quirks work on PCI UARTs without an UID (Hans de
Goede)

- Force native backlight handling Apple MacbookPro11,2 and Air7,2 in
the ACPI video driver (Jonathan Denose)

- Switch several ACPI platform drivers back to using struct
platform_driver::remove() (Uwe Kleine-König)

- Replace strcpy() with strscpy() in multiple places in the ACPI
subsystem (Muhammad Qasim Abdul Majeed, Abdul Rahim)"

* tag 'acpi-6.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (24 commits)
ACPI: video: force native for Apple MacbookPro11,2 and Air7,2
ACPI: CPPC: Fix _CPC register setting issue
ACPI: Switch back to struct platform_driver::remove()
ACPI: x86: Add adev NULL check to acpi_quirk_skip_serdev_enumeration()
ACPI: x86: Make UART skip quirks work on PCI UARTs without an UID
ACPI: allow building without CONFIG_HAS_IOPORT
ACPI: processor_perflib: extend X86 dependency
ACPI: scan: Use strscpy() instead of strcpy()
ACPI: SBSHC: Use strscpy() instead of strcpy()
ACPI: SBS: Use strscpy() instead of strcpy()
ACPI: power: Use strscpy() instead of strcpy()
ACPI: pci_root: Use strscpy() instead of strcpy()
ACPI: pci_link: Use strscpy() instead of strcpy()
ACPI: event: Use strscpy() instead of strcpy()
ACPI: EC: Use strscpy() instead of strcpy()
ACPI: APD: Use strscpy() instead of strcpy()
ACPI: thermal: Use strscpy() instead of strcpy()
ACPI: battery: Check for error code from devm_mutex_init() call
ACPI: EC: make EC support compile-time conditional
ACPI: pfr_telemetry: remove redundant error check on ret
...

drivers/acpi/Kconfig

···
 	  makes it possible to force the kernel to return "5" as the supported
 	  ACPI revision via the "acpi_rev_override" command line switch.
 
+config ACPI_EC
+	bool "Embedded Controller"
+	depends on HAS_IOPORT
+	default X86
+	help
+	  This driver handles communication with the microcontroller
+	  on many x86 laptops and other machines.
+
 config ACPI_EC_DEBUGFS
 	tristate "EC read/write access through /sys/kernel/debug/ec"
+	depends on ACPI_EC
 	help
 	  Say N to disable Embedded Controller /sys/kernel/debug interface
 
···
 
 config ACPI_SBS
 	tristate "Smart Battery System"
-	depends on X86
+	depends on X86 && ACPI_EC
 	select POWER_SUPPLY
 	help
 	  This driver supports the Smart Battery System, another

drivers/acpi/Makefile

···
 acpi-y				+= acpi_processor.o
 acpi-y				+= processor_core.o
 acpi-$(CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC) += processor_pdc.o
-acpi-y				+= ec.o
+acpi-$(CONFIG_ACPI_EC)		+= ec.o
 acpi-$(CONFIG_ACPI_DOCK)	+= dock.o
 acpi-$(CONFIG_PCI)		+= pci_root.o pci_link.o pci_irq.o
 obj-$(CONFIG_ACPI_MCFG)		+= pci_mcfg.o

drivers/acpi/ac.c

···
 
 static struct platform_driver acpi_ac_driver = {
 	.probe = acpi_ac_probe,
-	.remove_new = acpi_ac_remove,
+	.remove = acpi_ac_remove,
 	.driver = {
 		.name = "ac",
 		.acpi_match_table = ac_device_ids,

drivers/acpi/acpi_apd.c

···
 		if (!clk_data->name)
 			return -ENOMEM;
 
-		strcpy(clk_data->name, obj->string.pointer);
+		strscpy(clk_data->name, obj->string.pointer, obj->string.length);
 	} else {
 		/* Set default name to mclk if entry missing in firmware */
 		clk_data->name = "mclk";

drivers/acpi/acpi_pad.c

···
 
 static struct platform_driver acpi_pad_driver = {
 	.probe = acpi_pad_probe,
-	.remove_new = acpi_pad_remove,
+	.remove = acpi_pad_remove,
 	.driver = {
 		.dev_groups = acpi_pad_groups,
 		.name = "processor_aggregator",

drivers/acpi/acpi_tad.c

···
 		.acpi_match_table = acpi_tad_ids,
 	},
 	.probe = acpi_tad_probe,
-	.remove_new = acpi_tad_remove,
+	.remove = acpi_tad_remove,
 };
 MODULE_DEVICE_TABLE(acpi, acpi_tad_ids);
 

drivers/acpi/apei/einj-core.c

···
  * triggering a section mismatch warning.
  */
 static struct platform_driver einj_driver __refdata = {
-	.remove_new = __exit_p(einj_remove),
+	.remove = __exit_p(einj_remove),
 	.driver = {
 		.name = "acpi-einj",
 	},

drivers/acpi/apei/ghes.c

···
 		.name	= "GHES",
 	},
 	.probe		= ghes_probe,
-	.remove_new	= ghes_remove,
+	.remove		= ghes_remove,
 };
 
 void __init acpi_ghes_init(void)

drivers/acpi/arm64/agdi.c

···
 		.name = "agdi",
 	},
 	.probe = agdi_probe,
-	.remove_new = agdi_remove,
+	.remove = agdi_remove,
 };
 
 void __init acpi_agdi_init(void)

drivers/acpi/battery.c

···
 	if (device->dep_unmet)
 		return -EPROBE_DEFER;
 
-	battery = kzalloc(sizeof(struct acpi_battery), GFP_KERNEL);
+	battery = devm_kzalloc(&device->dev, sizeof(*battery), GFP_KERNEL);
 	if (!battery)
 		return -ENOMEM;
 	battery->device = device;
 	strscpy(acpi_device_name(device), ACPI_BATTERY_DEVICE_NAME);
 	strscpy(acpi_device_class(device), ACPI_BATTERY_CLASS);
 	device->driver_data = battery;
-	mutex_init(&battery->lock);
-	mutex_init(&battery->sysfs_lock);
+	result = devm_mutex_init(&device->dev, &battery->lock);
+	if (result)
+		return result;
+
+	result = devm_mutex_init(&device->dev, &battery->sysfs_lock);
+	if (result)
+		return result;
+
 	if (acpi_has_method(battery->device->handle, "_BIX"))
 		set_bit(ACPI_BATTERY_XINFO_PRESENT, &battery->flags);
 
···
 		device->status.battery_present ? "present" : "absent");
 
 	battery->pm_nb.notifier_call = battery_notify;
-	register_pm_notifier(&battery->pm_nb);
+	result = register_pm_notifier(&battery->pm_nb);
+	if (result)
+		goto fail;
 
 	device_init_wakeup(&device->dev, 1);
 
···
 	unregister_pm_notifier(&battery->pm_nb);
 fail:
 	sysfs_remove_battery(battery);
-	mutex_destroy(&battery->lock);
-	mutex_destroy(&battery->sysfs_lock);
-	kfree(battery);
 
 	return result;
 }
···
 	device_init_wakeup(&device->dev, 0);
 	unregister_pm_notifier(&battery->pm_nb);
 	sysfs_remove_battery(battery);
-
-	mutex_destroy(&battery->lock);
-	mutex_destroy(&battery->sysfs_lock);
-	kfree(battery);
 }
 
-#ifdef CONFIG_PM_SLEEP
 /* this is needed to learn about changes made in suspended state */
 static int acpi_battery_resume(struct device *dev)
 {
···
 	acpi_battery_update(battery, true);
 	return 0;
 }
-#else
-#define acpi_battery_resume NULL
-#endif
 
-static SIMPLE_DEV_PM_OPS(acpi_battery_pm, NULL, acpi_battery_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(acpi_battery_pm, NULL, acpi_battery_resume);
 
 static struct acpi_driver acpi_battery_driver = {
 	.name = "battery",
···
 		.add = acpi_battery_add,
 		.remove = acpi_battery_remove,
 		},
-	.drv.pm = &acpi_battery_pm,
+	.drv.pm = pm_sleep_ptr(&acpi_battery_pm),
 	.drv.probe_type = PROBE_PREFER_ASYNCHRONOUS,
 };
 

drivers/acpi/cppc_acpi.c

···
 	*val = 0;
 	size = GET_BIT_WIDTH(reg);
 
-	if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
+	if (IS_ENABLED(CONFIG_HAS_IOPORT) &&
+	    reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
 		u32 val_u32;
 		acpi_status status;
 
···
 
 	size = GET_BIT_WIDTH(reg);
 
-	if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
+	if (IS_ENABLED(CONFIG_HAS_IOPORT) &&
+	    reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) {
 		acpi_status status;
 
 		status = acpi_os_write_port((acpi_io_address)reg->address,
···
 			return -EFAULT;
 		}
 		val = MASK_VAL_WRITE(reg, prev_val, val);
-		val |= prev_val;
 	}
 
 	switch (size) {

drivers/acpi/dptf/dptf_pch_fivr.c

···
 
 static struct platform_driver pch_fivr_driver = {
 	.probe = pch_fivr_add,
-	.remove_new = pch_fivr_remove,
+	.remove = pch_fivr_remove,
 	.driver = {
 		.name = "dptf_pch_fivr",
 		.acpi_match_table = pch_fivr_device_ids,

drivers/acpi/dptf/dptf_power.c

···
 
 static struct platform_driver dptf_power_driver = {
 	.probe = dptf_power_add,
-	.remove_new = dptf_power_remove,
+	.remove = dptf_power_remove,
 	.driver = {
 		.name = "dptf_power",
 		.acpi_match_table = int3407_device_ids,

drivers/acpi/ec.c

···
 	struct acpi_ec *ec;
 	int ret;
 
-	strcpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_EC_CLASS);
+	strscpy(acpi_device_name(device), ACPI_EC_DEVICE_NAME);
+	strscpy(acpi_device_class(device), ACPI_EC_CLASS);
 
 	if (boot_ec && (boot_ec->handle == device->handle ||
 	    !strcmp(acpi_device_hid(device), ACPI_ECDT_HID))) {

drivers/acpi/event.c

···
 {
 	struct acpi_bus_event event;
 
-	strcpy(event.device_class, dev->pnp.device_class);
-	strcpy(event.bus_id, dev->pnp.bus_id);
+	strscpy(event.device_class, dev->pnp.device_class);
+	strscpy(event.bus_id, dev->pnp.bus_id);
 	event.type = type;
 	event.data = data;
 	return (blocking_notifier_call_chain(&acpi_chain_head, 0, (void *)&event)

drivers/acpi/evged.c

···
 
 static struct platform_driver ged_driver = {
 	.probe = ged_probe,
-	.remove_new = ged_remove,
+	.remove = ged_remove,
 	.shutdown = ged_shutdown,
 	.driver = {
 		.name = MODULE_NAME,

drivers/acpi/fan_core.c

···
 
 static struct platform_driver acpi_fan_driver = {
 	.probe = acpi_fan_probe,
-	.remove_new = acpi_fan_remove,
+	.remove = acpi_fan_remove,
 	.driver = {
 		.name = "acpi-fan",
 		.acpi_match_table = fan_device_ids,

drivers/acpi/internal.h

···
 /* External interfaces use first EC only, so remember */
 typedef int (*acpi_ec_query_func) (void *data);
 
+#ifdef CONFIG_ACPI_EC
+
 void acpi_ec_init(void);
 void acpi_ec_ecdt_probe(void);
 void acpi_ec_dsdt_probe(void);
···
 bool acpi_ec_dispatch_gpe(void);
 #endif
 
+#else
+
+static inline void acpi_ec_init(void) {}
+static inline void acpi_ec_ecdt_probe(void) {}
+static inline void acpi_ec_dsdt_probe(void) {}
+static inline void acpi_ec_block_transactions(void) {}
+static inline void acpi_ec_unblock_transactions(void) {}
+static inline int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
+			      acpi_handle handle, acpi_ec_query_func func,
+			      void *data)
+{
+	return -ENXIO;
+}
+static inline void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit) {}
+static inline void acpi_ec_register_opregions(struct acpi_device *adev) {}
+
+static inline void acpi_ec_flush_work(void) {}
+static inline bool acpi_ec_dispatch_gpe(void)
+{
+	return false;
+}
+
+#endif
 
 /*--------------------------------------------------------------------------
                                   Suspend/Resume

drivers/acpi/osl.c

···
 {
 	u32 dummy;
 
+	if (!IS_ENABLED(CONFIG_HAS_IOPORT)) {
+		/*
+		 * set all-1 result as if reading from non-existing
+		 * I/O port
+		 */
+		*value = GENMASK(width, 0);
+		return AE_NOT_IMPLEMENTED;
+	}
+
 	if (value)
 		*value = 0;
 	else
···
 
 acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width)
 {
+	if (!IS_ENABLED(CONFIG_HAS_IOPORT))
+		return AE_NOT_IMPLEMENTED;
+
 	if (width <= 8) {
 		outb(value, port);
 	} else if (width <= 16) {

drivers/acpi/pci_link.c

···
 		return -ENOMEM;
 
 	link->device = device;
-	strcpy(acpi_device_name(device), ACPI_PCI_LINK_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_PCI_LINK_CLASS);
+	strscpy(acpi_device_name(device), ACPI_PCI_LINK_DEVICE_NAME);
+	strscpy(acpi_device_class(device), ACPI_PCI_LINK_CLASS);
 	device->driver_data = link;
 
 	mutex_lock(&acpi_link_lock);

drivers/acpi/pci_root.c

···
 
 	root->device = device;
 	root->segment = segment & 0xFFFF;
-	strcpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
+	strscpy(acpi_device_name(device), ACPI_PCI_ROOT_DEVICE_NAME);
+	strscpy(acpi_device_class(device), ACPI_PCI_ROOT_CLASS);
 	device->driver_data = root;
 
 	if (hotadd && dmar_device_add(handle)) {

drivers/acpi/pfr_telemetry.c

···
 
 	case PFRT_LOG_IOC_GET_INFO:
 		info.log_level = get_pfrt_log_level(pfrt_log_dev);
-		if (ret < 0)
-			return ret;
-
 		info.log_type = pfrt_log_dev->info.log_type;
 		info.log_revid = pfrt_log_dev->info.log_revid;
 		if (copy_to_user(p, &info, sizeof(info)))
···
 		.acpi_match_table = acpi_pfrt_log_ids,
 	},
 	.probe = acpi_pfrt_log_probe,
-	.remove_new = acpi_pfrt_log_remove,
+	.remove = acpi_pfrt_log_remove,
 };
 module_platform_driver(acpi_pfrt_log_driver);
 

drivers/acpi/pfr_update.c

···
 		.acpi_match_table = acpi_pfru_ids,
 	},
 	.probe = acpi_pfru_probe,
-	.remove_new = acpi_pfru_remove,
+	.remove = acpi_pfru_remove,
 };
 module_platform_driver(acpi_pfru_driver);
 

drivers/acpi/power.c

···
 	mutex_init(&resource->resource_lock);
 	INIT_LIST_HEAD(&resource->list_node);
 	INIT_LIST_HEAD(&resource->dependents);
-	strcpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_POWER_CLASS);
+	strscpy(acpi_device_name(device), ACPI_POWER_DEVICE_NAME);
+	strscpy(acpi_device_class(device), ACPI_POWER_CLASS);
 	device->power.state = ACPI_STATE_UNKNOWN;
 	device->flags.match_driver = true;
 

drivers/acpi/processor_perflib.c

···
 
 #define ACPI_PROCESSOR_FILE_PERFORMANCE	"performance"
 
-static DEFINE_MUTEX(performance_mutex);
-
 /*
  * _PPC support is implemented as a CPUfreq policy notifier:
  * This means each time a CPUfreq driver registered also with
···
 	}
 }
 
+#ifdef CONFIG_X86
+
+static DEFINE_MUTEX(performance_mutex);
+
 static int acpi_processor_get_performance_control(struct acpi_processor *pr)
 {
 	int result = 0;
···
 	return result;
 }
 
-#ifdef CONFIG_X86
 /*
  * Some AMDs have 50MHz frequency multiples, but only provide 100MHz rounding
  * in their ACPI data. Calculate the real values and fix up the _PSS data.
···
 			px->core_frequency = (100 * (fid + 8)) >> did;
 	}
 }
-#else
-static void amd_fixup_frequency(struct acpi_processor_px *px, int i) {};
-#endif
 
 static int acpi_processor_get_performance_states(struct acpi_processor *pr)
 {
···
 	 * the BIOS is older than the CPU and does not know its frequencies
 	 */
  update_bios:
-#ifdef CONFIG_X86
 	if (acpi_has_method(pr->handle, "_PPC")) {
 		if(boot_cpu_has(X86_FEATURE_EST))
 			pr_warn(FW_BUG "BIOS needs update for CPU "
 			       "frequency support\n");
 	}
-#endif
 	return result;
 }
 EXPORT_SYMBOL_GPL(acpi_processor_get_performance_info);
···
 	mutex_unlock(&performance_mutex);
 }
 EXPORT_SYMBOL(acpi_processor_unregister_performance);
+#endif

drivers/acpi/sbs.c

···
 
 	sbs->hc = acpi_driver_data(acpi_dev_parent(device));
 	sbs->device = device;
-	strcpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_SBS_CLASS);
+	strscpy(acpi_device_name(device), ACPI_SBS_DEVICE_NAME);
+	strscpy(acpi_device_class(device), ACPI_SBS_CLASS);
 	device->driver_data = sbs;
 
 	result = acpi_charger_add(sbs);

drivers/acpi/sbshc.c

···
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include "sbshc.h"
+#include "internal.h"
 
 #define ACPI_SMB_HC_CLASS	"smbus_host_ctl"
 #define ACPI_SMB_HC_DEVICE_NAME	"ACPI SMBus HC"
···
 	return 0;
 }
 
-typedef int (*acpi_ec_query_func) (void *data);
-
-extern int acpi_ec_add_query_handler(struct acpi_ec *ec, u8 query_bit,
-			      acpi_handle handle, acpi_ec_query_func func,
-			      void *data);
-
 static int acpi_smbus_hc_add(struct acpi_device *device)
 {
 	int status;
···
 		return -EIO;
 	}
 
-	strcpy(acpi_device_name(device), ACPI_SMB_HC_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_SMB_HC_CLASS);
+	strscpy(acpi_device_name(device), ACPI_SMB_HC_DEVICE_NAME);
+	strscpy(acpi_device_class(device), ACPI_SMB_HC_CLASS);
 
 	hc = kzalloc(sizeof(struct acpi_smb_hc), GFP_KERNEL);
 	if (!hc)
···
 
 	return 0;
 }
-
-extern void acpi_ec_remove_query_handler(struct acpi_ec *ec, u8 query_bit);
 
 static void acpi_smbus_hc_remove(struct acpi_device *device)
 {

drivers/acpi/scan.c

···
 	 * TBD: Shouldn't this value be unique (within the ACPI namespace)?
 	 */
 	if (!acpi_dev_parent(device)) {
-		strcpy(device->pnp.bus_id, "ACPI");
+		strscpy(device->pnp.bus_id, "ACPI");
 		return;
 	}
 
 	switch (device->device_type) {
 	case ACPI_BUS_TYPE_POWER_BUTTON:
-		strcpy(device->pnp.bus_id, "PWRF");
+		strscpy(device->pnp.bus_id, "PWRF");
 		break;
 	case ACPI_BUS_TYPE_SLEEP_BUTTON:
-		strcpy(device->pnp.bus_id, "SLPF");
+		strscpy(device->pnp.bus_id, "SLPF");
 		break;
 	case ACPI_BUS_TYPE_ECDT_EC:
-		strcpy(device->pnp.bus_id, "ECDT");
+		strscpy(device->pnp.bus_id, "ECDT");
 		break;
 	default:
 		acpi_get_name(device->handle, ACPI_SINGLE_NAME, &buffer);
···
 			else
 				break;
 		}
-		strcpy(device->pnp.bus_id, bus_id);
+		strscpy(device->pnp.bus_id, bus_id);
 		break;
 	}
 }
···
 			 acpi_object_is_system_bus(handle)) {
 			/* \_SB, \_TZ, LNXSYBUS */
 			acpi_add_id(pnp, ACPI_BUS_HID);
-			strcpy(pnp->device_name, ACPI_BUS_DEVICE_NAME);
-			strcpy(pnp->device_class, ACPI_BUS_CLASS);
+			strscpy(pnp->device_name, ACPI_BUS_DEVICE_NAME);
+			strscpy(pnp->device_class, ACPI_BUS_CLASS);
 		}
 
 		break;

drivers/acpi/thermal.c

···
 		return -ENOMEM;
 
 	tz->device = device;
-	strcpy(tz->name, device->pnp.bus_id);
-	strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
-	strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
+	strscpy(tz->name, device->pnp.bus_id);
+	strscpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
+	strscpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
 	device->driver_data = tz;
 
 	acpi_thermal_aml_dependency_fix(tz);

drivers/acpi/video_detect.c

···
 	},
 	{
 	 .callback = video_detect_force_native,
+	 /* Apple MacBook Air 7,2 */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir7,2"),
+		},
+	},
+	{
+	 .callback = video_detect_force_native,
 	 /* Apple MacBook Air 9,1 */
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
···
 	 .matches = {
 		DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
 		DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro9,2"),
+		},
+	},
+	{
+	 .callback = video_detect_force_native,
+	 /* Apple MacBook Pro 11,2 */
+	 .matches = {
+		DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+		DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro11,2"),
 		},
 	},
 	{

drivers/acpi/x86/utils.c

···
 
 #include <linux/acpi.h>
 #include <linux/dmi.h>
+#include <linux/pci.h>
 #include <linux/platform_device.h>
 #include <asm/cpu_device_id.h>
 #include <asm/intel-family.h>
···
 					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY),
 	},
 	{
+		/* Vexia Edu Atla 10 tablet 9V version */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+			DMI_MATCH(DMI_BOARD_NAME, "Aptio CRB"),
+			/* Above strings are too generic, also match on BIOS date */
+			DMI_MATCH(DMI_BIOS_DATE, "08/25/2014"),
+		},
+		.driver_data = (void *)(ACPI_QUIRK_SKIP_I2C_CLIENTS |
+					ACPI_QUIRK_UART1_SKIP |
+					ACPI_QUIRK_SKIP_ACPI_AC_AND_BATTERY |
+					ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS),
+	},
+	{
 		/* Whitelabel (sold as various brands) TM800A550L */
 		.matches = {
 			DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
···
 	struct acpi_device *adev = ACPI_COMPANION(controller_parent);
 	const struct dmi_system_id *dmi_id;
 	long quirks = 0;
-	u64 uid;
-	int ret;
-
-	ret = acpi_dev_uid_to_integer(adev, &uid);
-	if (ret)
-		return 0;
+	u64 uid = 0;
 
 	dmi_id = dmi_first_match(acpi_quirk_skip_dmi_ids);
-	if (dmi_id)
-		quirks = (unsigned long)dmi_id->driver_data;
+	if (!dmi_id)
+		return 0;
 
-	if (!dev_is_platform(controller_parent)) {
+	quirks = (unsigned long)dmi_id->driver_data;
+
+	/* uid is left at 0 on errors and 0 is not a valid UART UID */
+	acpi_dev_uid_to_integer(adev, &uid);
+
+	/* For PCI UARTs without an UID */
+	if (!uid && dev_is_pci(controller_parent)) {
+		struct pci_dev *pdev = to_pci_dev(controller_parent);
+
+		/*
+		 * Devfn values for PCI UARTs on Bay Trail SoCs, which are
+		 * the only devices where this fallback is necessary.
+		 */
+		if (pdev->devfn == PCI_DEVFN(0x1e, 3))
+			uid = 1;
+		else if (pdev->devfn == PCI_DEVFN(0x1e, 4))
+			uid = 2;
+	}
+
+	if (!uid)
+		return 0;
+
+	if (!dev_is_platform(controller_parent) && !dev_is_pci(controller_parent)) {
 		/* PNP enumerated UARTs */
 		if ((quirks & ACPI_QUIRK_PNP_UART1_SKIP) && uid == 1)
 			*skip = true;
···
 	 * Set skip to true so that the tty core creates a serdev ctrl device.
 	 * The backlight driver will manually create the serdev client device.
 	 */
-	if (acpi_dev_hid_match(adev, "DELL0501")) {
+	if (adev && acpi_dev_hid_match(adev, "DELL0501")) {
 		*skip = true;
 		/*
 		 * Create a platform dev for dell-uart-backlight to bind to.

drivers/char/Kconfig

···
 config SONYPI
 	tristate "Sony Vaio Programmable I/O Control Device support"
 	depends on X86_32 && PCI && INPUT
+	depends on ACPI_EC || !ACPI
 	help
 	  This driver enables access to the Sony Programmable I/O Control
 	  Device which can be found in many (all ?) Sony Vaio laptops.

drivers/hwmon/Kconfig

···
 
 config SENSORS_OXP
 	tristate "OneXPlayer EC fan control"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on X86
 	help
 		If you say yes here you get support for fan readings and control over
···
 config SENSORS_ASUS_EC
 	tristate "ASUS EC Sensors"
 	depends on X86
+	depends on ACPI_EC
 	help
 	  If you say yes here you get support for the ACPI embedded controller
 	  hardware monitoring interface found in ASUS motherboards. The driver

drivers/platform/x86/Kconfig

···
 config HUAWEI_WMI
 	tristate "Huawei WMI laptop extras driver"
 	depends on ACPI_BATTERY
+	depends on ACPI_EC
 	depends on ACPI_WMI
 	depends on INPUT
 	select INPUT_SPARSEKMAP
···
 
 config ACERHDF
 	tristate "Acer Aspire One temperature and fan driver"
-	depends on ACPI && THERMAL
+	depends on ACPI_EC && THERMAL
 	select THERMAL_GOV_BANG_BANG
 	help
 	  This is a driver for Acer Aspire One netbooks. It allows to access
···
 	depends on SERIO_I8042
 	depends on INPUT
 	depends on RFKILL || RFKILL = n
+	depends on ACPI_EC
 	depends on ACPI_WMI
 	depends on ACPI_VIDEO || ACPI_VIDEO = n
 	depends on HWMON
···
 
 config EEEPC_LAPTOP
 	tristate "Eee PC Hotkey Driver"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on INPUT
 	depends on RFKILL || RFKILL = n
 	depends on ACPI_VIDEO || ACPI_VIDEO = n
···
 
 config THINKPAD_ACPI
 	tristate "ThinkPad ACPI Laptop Extras"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on ACPI_BATTERY
 	depends on INPUT
 	depends on RFKILL || RFKILL = n
···
 
 config MSI_EC
 	tristate "MSI EC Extras"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on ACPI_BATTERY
 	help
 	  This driver allows various MSI laptops' functionalities to be
···
 
 config MSI_LAPTOP
 	tristate "MSI Laptop Extras"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on BACKLIGHT_CLASS_DEVICE
 	depends on ACPI_VIDEO || ACPI_VIDEO = n
 	depends on RFKILL
···
 
 config SAMSUNG_Q10
 	tristate "Samsung Q10 Extras"
-	depends on ACPI
+	depends on ACPI_EC
 	select BACKLIGHT_CLASS_DEVICE
 	help
 	  This driver provides support for backlight control on Samsung Q10
···
 
 config ACPI_TOSHIBA
 	tristate "Toshiba Laptop Extras"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on ACPI_BATTERY
 	depends on ACPI_WMI
 	select LEDS_CLASS
···
 
 config COMPAL_LAPTOP
 	tristate "Compal (and others) Laptop Extras"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on BACKLIGHT_CLASS_DEVICE
 	depends on ACPI_VIDEO || ACPI_VIDEO = n
 	depends on RFKILL
···
 
 config SONY_LAPTOP
 	tristate "Sony Laptop Extras"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on ACPI_VIDEO || ACPI_VIDEO = n
 	depends on BACKLIGHT_CLASS_DEVICE
 	depends on INPUT
···
 
 config SYSTEM76_ACPI
 	tristate "System76 ACPI Driver"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on ACPI_BATTERY
 	depends on HWMON
 	depends on INPUT

drivers/platform/x86/dell/Kconfig

···
 config DELL_WMI_PRIVACY
 	bool "Dell WMI Hardware Privacy Support"
 	depends on DELL_WMI
+	depends on ACPI_EC
 	help
 	  This option adds integration with the "Dell Hardware Privacy"
 	  feature of Dell laptops to the dell-wmi driver.

drivers/platform/x86/hp/Kconfig

···
 config HP_WMI
 	tristate "HP WMI extras"
 	default m
+	depends on ACPI_EC
 	depends on ACPI_WMI
 	depends on INPUT
 	depends on RFKILL || RFKILL = n

drivers/platform/x86/intel/Kconfig

···
 
 config INTEL_OAKTRAIL
 	tristate "Intel Oaktrail Platform Extras"
-	depends on ACPI
+	depends on ACPI_EC
 	depends on ACPI_VIDEO || ACPI_VIDEO=n
 	depends on RFKILL && BACKLIGHT_CLASS_DEVICE && ACPI
 	help

include/linux/acpi.h

···
 int acpi_subsys_suspend(struct device *dev);
 int acpi_subsys_freeze(struct device *dev);
 int acpi_subsys_poweroff(struct device *dev);
-void acpi_ec_mark_gpe_for_wake(void);
-void acpi_ec_set_gpe_wake_mask(u8 action);
 int acpi_subsys_restore_early(struct device *dev);
 #else
 static inline int acpi_subsys_prepare(struct device *dev) { return 0; }
···
 static inline int acpi_subsys_freeze(struct device *dev) { return 0; }
 static inline int acpi_subsys_poweroff(struct device *dev) { return 0; }
 static inline int acpi_subsys_restore_early(struct device *dev) { return 0; }
+#endif
+
+#if defined(CONFIG_ACPI_EC) && defined(CONFIG_PM_SLEEP)
+void acpi_ec_mark_gpe_for_wake(void);
+void acpi_ec_set_gpe_wake_mask(u8 action);
+#else
 static inline void acpi_ec_mark_gpe_for_wake(void) {}
 static inline void acpi_ec_set_gpe_wake_mask(u8 action) {}
 #endif