Merge tag 'platform-drivers-x86-v6.7-3' into pdx86/for-next

Back merge pdx86 fixes into pdx86/for-next for further WMI work
depending on some of the fixes.

platform-drivers-x86 for v6.7-3

Highlights:
- asus-wmi: Solve i8042 filter resource handling, input, and
suspend issues
- wmi: Skip zero instance WMI blocks to avoid issues with
some laptops
- mlxbf-bootctl: Differentiate dev/production keys
- platform/surface: Correct serdev related return value to avoid
leaking errno into userspace
- Error checking fixes

The following is an automated shortlog grouped by driver:

asus-wmi:
- Change q500a_i8042_filter() into a generic i8042-filter
- disable USB0 hub on ROG Ally before suspend
- Filter Volume key presses if also reported via atkbd
- Move i8042 filter install to shared asus-wmi code

mellanox:
- Add null pointer checks for devm_kasprintf()
- Check devm_hwmon_device_register_with_groups() return value

mlxbf-bootctl:
- correctly identify secure boot with development keys

surface: aggregator:
- fix recv_buf() return value

wmi:
- Skip blocks with zero instances

MAINTAINERS

···
 
 INTEL WMI SLIM BOOTLOADER (SBL) FIRMWARE UPDATE DRIVER
 M:	Jithu Joseph <[e-mail]>
-R:	Maurice Ma <[e-mail]>
 S:	Maintained
 W:	https://slimbootloader.github.io/security/firmware-update.html
 F:	drivers/platform/x86/intel/wmi/sbl-fw-update.c
···
 MELLANOX HARDWARE PLATFORM SUPPORT
 M:	Hans de Goede <[e-mail]>
 M:	Ilpo Järvinen <[e-mail]>
-M:	Mark Gross <[e-mail]>
 M:	Vadim Pasternak <[e-mail]>
 L:	[e-mail]
 S:	Supported
···
 MICROSOFT SURFACE HARDWARE PLATFORM SUPPORT
 M:	Hans de Goede <[e-mail]>
 M:	Ilpo Järvinen <[e-mail]>
-M:	Mark Gross <[e-mail]>
 M:	Maximilian Luz <[e-mail]>
 L:	[e-mail]
 S:	Maintained
···
 X86 PLATFORM DRIVERS
 M:	Hans de Goede <[e-mail]>
 M:	Ilpo Järvinen <[e-mail]>
-M:	Mark Gross <[e-mail]>
 L:	[e-mail]
 S:	Maintained
 Q:	https://patchwork.kernel.org/project/platform-driver-x86/list/

drivers/platform/mellanox/mlxbf-bootctl.c

···
 
 #define MLXBF_BOOTCTL_SB_SECURE_MASK		0x03
 #define MLXBF_BOOTCTL_SB_TEST_MASK		0x0c
+#define MLXBF_BOOTCTL_SB_DEV_MASK		BIT(4)
 
 #define MLXBF_SB_KEY_NUM			4
 
···
 	{ MLXBF_BOOTCTL_NONE, "none" },
 };
 
+enum {
+	MLXBF_BOOTCTL_SB_LIFECYCLE_PRODUCTION = 0,
+	MLXBF_BOOTCTL_SB_LIFECYCLE_GA_SECURE = 1,
+	MLXBF_BOOTCTL_SB_LIFECYCLE_GA_NON_SECURE = 2,
+	MLXBF_BOOTCTL_SB_LIFECYCLE_RMA = 3
+};
+
 static const char * const mlxbf_bootctl_lifecycle_states[] = {
-	[0] = "Production",
-	[1] = "GA Secured",
-	[2] = "GA Non-Secured",
-	[3] = "RMA",
+	[MLXBF_BOOTCTL_SB_LIFECYCLE_PRODUCTION] = "Production",
+	[MLXBF_BOOTCTL_SB_LIFECYCLE_GA_SECURE] = "GA Secured",
+	[MLXBF_BOOTCTL_SB_LIFECYCLE_GA_NON_SECURE] = "GA Non-Secured",
+	[MLXBF_BOOTCTL_SB_LIFECYCLE_RMA] = "RMA",
 };
 
 /* Log header format. */
···
 static ssize_t lifecycle_state_show(struct device *dev,
 				    struct device_attribute *attr, char *buf)
 {
+	int status_bits;
+	int use_dev_key;
+	int test_state;
 	int lc_state;
 
-	lc_state = mlxbf_bootctl_smc(MLXBF_BOOTCTL_GET_TBB_FUSE_STATUS,
-				     MLXBF_BOOTCTL_FUSE_STATUS_LIFECYCLE);
-	if (lc_state < 0)
-		return lc_state;
+	status_bits = mlxbf_bootctl_smc(MLXBF_BOOTCTL_GET_TBB_FUSE_STATUS,
+					MLXBF_BOOTCTL_FUSE_STATUS_LIFECYCLE);
+	if (status_bits < 0)
+		return status_bits;
 
-	lc_state &=
-		MLXBF_BOOTCTL_SB_TEST_MASK | MLXBF_BOOTCTL_SB_SECURE_MASK;
+	use_dev_key = status_bits & MLXBF_BOOTCTL_SB_DEV_MASK;
+	test_state = status_bits & MLXBF_BOOTCTL_SB_TEST_MASK;
+	lc_state = status_bits & MLXBF_BOOTCTL_SB_SECURE_MASK;
 
 	/*
 	 * If the test bits are set, we specify that the current state may be
 	 * due to using the test bits.
 	 */
-	if (lc_state & MLXBF_BOOTCTL_SB_TEST_MASK) {
-		lc_state &= MLXBF_BOOTCTL_SB_SECURE_MASK;
-
+	if (test_state) {
 		return sprintf(buf, "%s(test)\n",
 			       mlxbf_bootctl_lifecycle_states[lc_state]);
+	} else if (use_dev_key &&
+		   (lc_state == MLXBF_BOOTCTL_SB_LIFECYCLE_GA_SECURE)) {
+		return sprintf(buf, "Secured (development)\n");
 	}
 
 	return sprintf(buf, "%s\n", mlxbf_bootctl_lifecycle_states[lc_state]);

drivers/platform/mellanox/mlxbf-pmc.c

···
 	attr->dev_attr.show = mlxbf_pmc_event_list_show;
 	attr->nr = blk_num;
 	attr->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL, "event_list");
+	if (!attr->dev_attr.attr.name)
+		return -ENOMEM;
 	pmc->block[blk_num].block_attr[i] = &attr->dev_attr.attr;
 	attr = NULL;
 
···
 		attr->nr = blk_num;
 		attr->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
 							  "enable");
+		if (!attr->dev_attr.attr.name)
+			return -ENOMEM;
 		pmc->block[blk_num].block_attr[++i] = &attr->dev_attr.attr;
 		attr = NULL;
 	}
···
 		attr->nr = blk_num;
 		attr->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
 							  "counter%d", j);
+		if (!attr->dev_attr.attr.name)
+			return -ENOMEM;
 		pmc->block[blk_num].block_attr[++i] = &attr->dev_attr.attr;
 		attr = NULL;
 
···
 		attr->nr = blk_num;
 		attr->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
 							  "event%d", j);
+		if (!attr->dev_attr.attr.name)
+			return -ENOMEM;
 		pmc->block[blk_num].block_attr[++i] = &attr->dev_attr.attr;
 		attr = NULL;
 	}
···
 		attr->nr = blk_num;
 		attr->dev_attr.attr.name = devm_kasprintf(dev, GFP_KERNEL,
 							  events[j].evt_name);
+		if (!attr->dev_attr.attr.name)
+			return -ENOMEM;
 		pmc->block[blk_num].block_attr[i] = &attr->dev_attr.attr;
 		attr = NULL;
 		i++;
···
 	pmc->block[blk_num].block_attr_grp.attrs = pmc->block[blk_num].block_attr;
 	pmc->block[blk_num].block_attr_grp.name = devm_kasprintf(
 		dev, GFP_KERNEL, pmc->block_name[blk_num]);
+	if (!pmc->block[blk_num].block_attr_grp.name)
+		return -ENOMEM;
 	pmc->groups[pmc->group_num] = &pmc->block[blk_num].block_attr_grp;
 	pmc->group_num++;
 
···
 
 	pmc->hwmon_dev = devm_hwmon_device_register_with_groups(
 		dev, "bfperf", pmc, pmc->groups);
+	if (IS_ERR(pmc->hwmon_dev))
+		return PTR_ERR(pmc->hwmon_dev);
 	platform_set_drvdata(pdev, pmc);
 
 	return 0;

drivers/platform/surface/aggregator/core.c

···
 			    size_t n)
 {
 	struct ssam_controller *ctrl;
+	int ret;
 
 	ctrl = serdev_device_get_drvdata(dev);
-	return ssam_controller_receive_buf(ctrl, buf, n);
+	ret = ssam_controller_receive_buf(ctrl, buf, n);
+
+	return ret < 0 ? 0 : ret;
 }
 
 static void ssam_write_wakeup(struct serdev_device *dev)

drivers/platform/x86/Kconfig

···
 	depends on RFKILL || RFKILL = n
 	depends on HOTPLUG_PCI
 	depends on ACPI_VIDEO || ACPI_VIDEO = n
+	depends on SERIO_I8042 || SERIO_I8042 = n
 	select INPUT_SPARSEKMAP
 	select LEDS_CLASS
 	select NEW_LEDS
···
 config ASUS_NB_WMI
 	tristate "Asus Notebook WMI Driver"
 	depends on ASUS_WMI
-	depends on SERIO_I8042 || SERIO_I8042 = n
 	help
 	  This is a driver for newer Asus notebooks. It adds extra features
 	  like wireless radio and bluetooth control, leds, hotkeys, backlight...

drivers/platform/x86/amd/pmc/pmc.c

···
 	{ }
 };
 
-static int amd_pmc_get_dram_size(struct amd_pmc_dev *dev)
-{
-	int ret;
-
-	switch (dev->cpu_id) {
-	case AMD_CPU_ID_YC:
-		if (!(dev->major > 90 || (dev->major == 90 && dev->minor > 39))) {
-			ret = -EINVAL;
-			goto err_dram_size;
-		}
-		break;
-	default:
-		ret = -EINVAL;
-		goto err_dram_size;
-	}
-
-	ret = amd_pmc_send_cmd(dev, S2D_DRAM_SIZE, &dev->dram_size, dev->s2d_msg_id, true);
-	if (ret || !dev->dram_size)
-		goto err_dram_size;
-
-	return 0;
-
-err_dram_size:
-	dev_err(dev->dev, "DRAM size command not supported for this platform\n");
-	return ret;
-}
-
 static int amd_pmc_s2d_init(struct amd_pmc_dev *dev)
 {
 	u32 phys_addr_low, phys_addr_hi;
···
 		return -EIO;
 
 	/* Get DRAM size */
-	ret = amd_pmc_get_dram_size(dev);
-	if (ret)
+	ret = amd_pmc_send_cmd(dev, S2D_DRAM_SIZE, &dev->dram_size, dev->s2d_msg_id, true);
+	if (ret || !dev->dram_size)
 		dev->dram_size = S2D_TELEMETRY_DRAMBYTES_MAX;
 
 	/* Get STB DRAM address */

drivers/platform/x86/asus-nb-wmi.c

···
 MODULE_PARM_DESC(tablet_mode_sw, "Tablet mode detect: -1:auto 0:disable 1:kbd-dock 2:lid-flip 3:lid-flip-rog");
 
 static struct quirk_entry *quirks;
+static bool atkbd_reports_vol_keys;
 
-static bool asus_q500a_i8042_filter(unsigned char data, unsigned char str,
-			      struct serio *port)
+static bool asus_i8042_filter(unsigned char data, unsigned char str, struct serio *port)
 {
-	static bool extended;
-	bool ret = false;
+	static bool extended_e0;
+	static bool extended_e1;
 
 	if (str & I8042_STR_AUXDATA)
 		return false;
 
-	if (unlikely(data == 0xe1)) {
-		extended = true;
-		ret = true;
-	} else if (unlikely(extended)) {
-		extended = false;
-		ret = true;
+	if (quirks->filter_i8042_e1_extended_codes) {
+		if (data == 0xe1) {
+			extended_e1 = true;
+			return true;
+		}
+
+		if (extended_e1) {
+			extended_e1 = false;
+			return true;
+		}
 	}
 
-	return ret;
+	if (data == 0xe0) {
+		extended_e0 = true;
+	} else if (extended_e0) {
+		extended_e0 = false;
+
+		switch (data & 0x7f) {
+		case 0x20: /* e0 20 / e0 a0, Volume Mute press / release */
+		case 0x2e: /* e0 2e / e0 ae, Volume Down press / release */
+		case 0x30: /* e0 30 / e0 b0, Volume Up press / release */
+			atkbd_reports_vol_keys = true;
+			break;
+		}
+	}
+
+	return false;
 }
 
 static struct quirk_entry quirk_asus_unknown = {
···
 };
 
 static struct quirk_entry quirk_asus_q500a = {
-	.i8042_filter = asus_q500a_i8042_filter,
+	.filter_i8042_e1_extended_codes = true,
 	.wmi_backlight_set_devstate = true,
 };
 
···
 
 static void asus_nb_wmi_quirks(struct asus_wmi_driver *driver)
 {
-	int ret;
-
 	quirks = &quirk_asus_unknown;
 	dmi_check_system(asus_quirks);
 
···
 
 	if (tablet_mode_sw != -1)
 		quirks->tablet_switch_mode = tablet_mode_sw;
-
-	if (quirks->i8042_filter) {
-		ret = i8042_install_filter(quirks->i8042_filter);
-		if (ret) {
-			pr_warn("Unable to install key filter\n");
-			return;
-		}
-		pr_info("Using i8042 filter function for receiving events\n");
-	}
 }
 
 static const struct key_entry asus_nb_wmi_keymap[] = {
···
 			*code = ASUS_WMI_KEY_IGNORE;
 
 		break;
+	case 0x30: /* Volume Up */
+	case 0x31: /* Volume Down */
+	case 0x32: /* Volume Mute */
+		if (atkbd_reports_vol_keys)
+			*code = ASUS_WMI_KEY_IGNORE;
+
+		break;
 	}
 }
 
···
 	.input_phys = ASUS_NB_WMI_FILE "/input0",
 	.detect_quirks = asus_nb_wmi_quirks,
 	.key_filter = asus_nb_wmi_key_filter,
+	.i8042_filter = asus_i8042_filter,
 };
 
 

drivers/platform/x86/asus-wmi.c

···
 #include <linux/acpi.h>
 #include <linux/backlight.h>
 #include <linux/debugfs.h>
+#include <linux/delay.h>
 #include <linux/dmi.h>
 #include <linux/fb.h>
 #include <linux/hwmon.h>
···
 #define ASUS_SCREENPAD_BRIGHT_MIN 20
 #define ASUS_SCREENPAD_BRIGHT_MAX 255
 #define ASUS_SCREENPAD_BRIGHT_DEFAULT 60
+
+/* Controls the power state of the USB0 hub on ROG Ally which input is on */
+#define ASUS_USB0_PWR_EC0_CSEE "\\_SB.PCI0.SBRG.EC0.CSEE"
+/* 300ms so far seems to produce a reliable result on AC and battery */
+#define ASUS_USB0_PWR_EC0_CSEE_WAIT 300
 
 static const char * const ashs_ids[] = { "ATK4001", "ATK4002", NULL };
 
···
 	struct work_struct hotplug_work;
 
 	bool fnlock_locked;
+
+	/* The ROG Ally device requires the MCU USB device be disconnected before suspend */
+	bool ally_mcu_usb_switch;
 
 	struct asus_wmi_debug debug;
 
···
 	asus->nv_temp_tgt_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_NV_THERM_TARGET);
 	asus->panel_overdrive_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_PANEL_OD);
 	asus->mini_led_mode_available = asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_MINI_LED_MODE);
+	asus->ally_mcu_usb_switch = acpi_has_method(NULL, ASUS_USB0_PWR_EC0_CSEE)
+						&& dmi_match(DMI_BOARD_NAME, "RC71L");
 
 	err = fan_boost_mode_check_present(asus);
 	if (err)
···
 		goto fail_wmi_handler;
 	}
 
+	if (asus->driver->i8042_filter) {
+		err = i8042_install_filter(asus->driver->i8042_filter);
+		if (err)
+			pr_warn("Unable to install key filter - %d\n", err);
+	}
+
 	asus_wmi_battery_init(asus);
 
 	asus_wmi_debugfs_init(asus);
···
 	struct asus_wmi *asus;
 
 	asus = platform_get_drvdata(device);
+	if (asus->driver->i8042_filter)
+		i8042_remove_filter(asus->driver->i8042_filter);
 	wmi_remove_notify_handler(asus->driver->event_guid);
 	asus_wmi_backlight_exit(asus);
 	asus_screenpad_exit(asus);
···
 		asus_wmi_fnlock_update(asus);
 
 	asus_wmi_tablet_mode_get_state(asus);
+
+	return 0;
+}
+
+static int asus_hotk_resume_early(struct device *device)
+{
+	struct asus_wmi *asus = dev_get_drvdata(device);
+
+	if (asus->ally_mcu_usb_switch) {
+		if (ACPI_FAILURE(acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE, 0xB8)))
+			dev_err(device, "ROG Ally MCU failed to connect USB dev\n");
+		else
+			msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
+	}
+	return 0;
+}
+
+static int asus_hotk_prepare(struct device *device)
+{
+	struct asus_wmi *asus = dev_get_drvdata(device);
+	int result, err;
+
+	if (asus->ally_mcu_usb_switch) {
+		/* When powersave is enabled it causes many issues with resume of USB hub */
+		result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_MCU_POWERSAVE);
+		if (result == 1) {
+			dev_warn(device, "MCU powersave enabled, disabling to prevent resume issues");
+			err = asus_wmi_set_devstate(ASUS_WMI_DEVID_MCU_POWERSAVE, 0, &result);
+			if (err || result != 1)
+				dev_err(device, "Failed to set MCU powersave mode: %d\n", err);
+		}
+		/* sleep required to ensure USB0 is disabled before sleep continues */
+		if (ACPI_FAILURE(acpi_execute_simple_method(NULL, ASUS_USB0_PWR_EC0_CSEE, 0xB7)))
+			dev_err(device, "ROG Ally MCU failed to disconnect USB dev\n");
+		else
+			msleep(ASUS_USB0_PWR_EC0_CSEE_WAIT);
+	}
 	return 0;
 }
 
···
 	.thaw = asus_hotk_thaw,
 	.restore = asus_hotk_restore,
 	.resume = asus_hotk_resume,
+	.resume_early = asus_hotk_resume_early,
+	.prepare = asus_hotk_prepare,
 };
 
 /* Registration ***************************************************************/

drivers/platform/x86/asus-wmi.h

···
 	bool wmi_backlight_set_devstate;
 	bool wmi_force_als_set;
 	bool wmi_ignore_fan;
+	bool filter_i8042_e1_extended_codes;
 	enum asus_wmi_tablet_switch_mode tablet_switch_mode;
 	int wapf;
 	/*
···
 	 */
 	int no_display_toggle;
 	u32 xusb2pr;
-
-	bool (*i8042_filter)(unsigned char data, unsigned char str,
-			     struct serio *serio);
 };
 
 struct asus_wmi_driver {
···
 	 * Return ASUS_WMI_KEY_IGNORE in code if event should be ignored. */
 	void (*key_filter) (struct asus_wmi_driver *driver, int *code,
 			    unsigned int *value, bool *autorelease);
+	/* Optional standard i8042 filter */
+	bool (*i8042_filter)(unsigned char data, unsigned char str,
+			     struct serio *serio);
 
 	int (*probe) (struct platform_device *device);
 	void (*detect_quirks) (struct asus_wmi_driver *driver);

drivers/platform/x86/hp/hp-bioscfg/bioscfg.c

···
 static int hp_add_other_attributes(int attr_type)
 {
 	struct kobject *attr_name_kobj;
-	union acpi_object *obj = NULL;
 	int ret;
 	char *attr_name;
 
-	mutex_lock(&bioscfg_drv.mutex);
-
 	attr_name_kobj = kzalloc(sizeof(*attr_name_kobj), GFP_KERNEL);
-	if (!attr_name_kobj) {
-		ret = -ENOMEM;
-		goto err_other_attr_init;
-	}
+	if (!attr_name_kobj)
+		return -ENOMEM;
+
+	mutex_lock(&bioscfg_drv.mutex);
 
 	/* Check if attribute type is supported */
 	switch (attr_type) {
···
 	default:
 		pr_err("Error: Unknown attr_type: %d\n", attr_type);
 		ret = -EINVAL;
-		goto err_other_attr_init;
+		kfree(attr_name_kobj);
+		goto unlock_drv_mutex;
 	}
 
 	ret = kobject_init_and_add(attr_name_kobj, &attr_name_ktype,
 				   NULL, "%s", attr_name);
 	if (ret) {
 		pr_err("Error encountered [%d]\n", ret);
-		kobject_put(attr_name_kobj);
 		goto err_other_attr_init;
 	}
 
···
 	switch (attr_type) {
 	case HPWMI_SECURE_PLATFORM_TYPE:
 		ret = hp_populate_secure_platform_data(attr_name_kobj);
-		if (ret)
-			goto err_other_attr_init;
 		break;
 
 	case HPWMI_SURE_START_TYPE:
 		ret = hp_populate_sure_start_data(attr_name_kobj);
-		if (ret)
-			goto err_other_attr_init;
 		break;
 
 	default:
 		ret = -EINVAL;
-		goto err_other_attr_init;
 	}
+
+	if (ret)
+		goto err_other_attr_init;
 
 	mutex_unlock(&bioscfg_drv.mutex);
 	return 0;
 
 err_other_attr_init:
+	kobject_put(attr_name_kobj);
+unlock_drv_mutex:
 	mutex_unlock(&bioscfg_drv.mutex);
-	kfree(obj);
 	return ret;
 }
 

drivers/platform/x86/ideapad-laptop.c

···
 	if (WARN_ON(priv->kbd_bl.initialized))
 		return -EEXIST;
 
-	brightness = ideapad_kbd_bl_brightness_get(priv);
-	if (brightness < 0)
-		return brightness;
-
-	priv->kbd_bl.last_brightness = brightness;
-
 	if (ideapad_kbd_bl_check_tristate(priv->kbd_bl.type)) {
 		priv->kbd_bl.led.max_brightness = 2;
 	} else {
 		priv->kbd_bl.led.max_brightness = 1;
 	}
 
+	brightness = ideapad_kbd_bl_brightness_get(priv);
+	if (brightness < 0)
+		return brightness;
+
+	priv->kbd_bl.last_brightness = brightness;
 	priv->kbd_bl.led.name                    = "platform::" LED_FUNCTION_KBD_BACKLIGHT;
 	priv->kbd_bl.led.brightness_get          = ideapad_kbd_bl_led_cdev_brightness_get;
 	priv->kbd_bl.led.brightness_set_blocking = ideapad_kbd_bl_led_cdev_brightness_set;

drivers/platform/x86/intel/telemetry/core.c

···
 /**
  * telemetry_update_events() - Update telemetry Configuration
  * @pss_evtconfig: PSS related config. No change if num_evts = 0.
- * @pss_evtconfig: IOSS related config. No change if num_evts = 0.
+ * @ioss_evtconfig: IOSS related config. No change if num_evts = 0.
  *
  * This API updates the IOSS & PSS Telemetry configuration. Old config
  * is overwritten. Call telemetry_reset_events when logging is over
···
 /**
  * telemetry_get_eventconfig() - Returns the pss and ioss events enabled
  * @pss_evtconfig: Pointer to PSS related configuration.
- * @pss_evtconfig: Pointer to IOSS related configuration.
+ * @ioss_evtconfig: Pointer to IOSS related configuration.
  * @pss_len:	   Number of u32 elements allocated for pss_evtconfig array
  * @ioss_len:	   Number of u32 elements allocated for ioss_evtconfig array
  *

drivers/platform/x86/wmi.c

···
 		if (debug_dump_wdg)
 			wmi_dump_wdg(&gblock[i]);
 
+		if (!gblock[i].instance_count) {
+			dev_info(wmi_bus_dev, FW_INFO "%pUL has zero instances\n", &gblock[i].guid);
+			continue;
+		}
+
 		if (guid_already_parsed_for_legacy(device, &gblock[i].guid))
 			continue;
 

include/linux/platform_data/x86/asus-wmi.h

···
 /* Charging mode - 1=Barrel, 2=USB */
 #define ASUS_WMI_DEVID_CHARGE_MODE	0x0012006C
 
+/* MCU powersave mode */
+#define ASUS_WMI_DEVID_MCU_POWERSAVE   0x001200E2
+
 /* epu is connected? 1 == true */
 #define ASUS_WMI_DEVID_EGPU_CONNECTED	0x00090018
 /* egpu on/off */