Merge branch 'bits/002-backports' into asahi-wip

Author: jannau

drivers/acpi/platform_profile.c

@@ -190,6 +190,20 @@ static ssize_t profile_show(struct device *dev,
 	return sysfs_emit(buf, "%s\n", profile_names[profile]);
 }
 
+/**
+ * profile_notify_legacy - Notify the legacy sysfs interface
+ *
+ * This wrapper takes care of only notifying the legacy sysfs interface
+ * if it was registered during module initialization.
+ */
+static void profile_notify_legacy(void)
+{
+	if (!acpi_kobj)
+		return;
+
+	sysfs_notify(acpi_kobj, NULL, "platform_profile");
+}
+
 /**
  * profile_store - Set the profile for a class device
  * @dev: The device
@@ -215,7 +229,7 @@ static ssize_t profile_store(struct device *dev,
 			return ret;
 	}
 
-	sysfs_notify(acpi_kobj, NULL, "platform_profile");
+	profile_notify_legacy();
 
 	return count;
 }
@@ -437,7 +451,7 @@ static ssize_t platform_profile_store(struct kobject *kobj,
 			return ret;
 	}
 
-	sysfs_notify(acpi_kobj, NULL, "platform_profile");
+	profile_notify_legacy();
 
 	return count;
 }
@@ -474,6 +488,22 @@ static const struct attribute_group platform_profile_group = {
 	.is_visible = profile_class_is_visible,
 };
 
+/**
+ * profile_update_legacy - Update the legacy sysfs interface
+ *
+ * This wrapper takes care of only updating the legacy sysfs interface
+ * if it was registered during module initialization.
+ *
+ * Return: 0 on success or error code on failure.
+ */
+static int profile_update_legacy(void)
+{
+	if (!acpi_kobj)
+		return 0;
+
+	return sysfs_update_group(acpi_kobj, &platform_profile_group);
+}
+
 /**
  * platform_profile_notify - Notify class device and legacy sysfs interface
  * @dev: The class device
@@ -483,7 +513,7 @@ void platform_profile_notify(struct device *dev)
 	scoped_cond_guard(mutex_intr, return, &profile_lock) {
 		_notify_class_profile(dev, NULL);
 	}
-	sysfs_notify(acpi_kobj, NULL, "platform_profile");
+	profile_notify_legacy();
 }
 EXPORT_SYMBOL_GPL(platform_profile_notify);
 
@@ -532,7 +562,7 @@ int platform_profile_cycle(void)
 			return err;
 	}
 
-	sysfs_notify(acpi_kobj, NULL, "platform_profile");
+	profile_notify_legacy();
 
 	return 0;
 }
@@ -606,9 +636,9 @@ struct device *platform_profile_register(struct device *dev, const char *name,
 		goto cleanup_ida;
 	}
 
-	sysfs_notify(acpi_kobj, NULL, "platform_profile");
+	profile_notify_legacy();
 
-	err = sysfs_update_group(acpi_kobj, &platform_profile_group);
+	err = profile_update_legacy();
 	if (err)
 		goto cleanup_cur;
 
@@ -640,9 +670,8 @@ int platform_profile_remove(struct device *dev)
 	device_unregister(&pprof->dev);
 	ida_free(&platform_profile_ida, id);
 
-	sysfs_notify(acpi_kobj, NULL, "platform_profile");
-
-	sysfs_update_group(acpi_kobj, &platform_profile_group);
+	profile_notify_legacy();
+	profile_update_legacy();
 
 	return 0;
 }
@@ -696,16 +725,28 @@ static int __init platform_profile_init(void)
 	if (err)
 		return err;
 
-	err = sysfs_create_group(acpi_kobj, &platform_profile_group);
-	if (err)
-		class_unregister(&platform_profile_class);
+	/*
+	 * The ACPI kobject can be missing if ACPI was disabled during booting.
+	 * We thus skip the initialization of the legacy sysfs interface in such
+	 * cases to allow the platform profile class to work on ARM64 notebooks
+	 * without ACPI support.
+	 */
+	if (acpi_kobj) {
+		err = sysfs_create_group(acpi_kobj, &platform_profile_group);
+		if (err < 0) {
+			class_unregister(&platform_profile_class);
+			return err;
+		}
+	}
 
-	return err;
+	return 0;
 }
 
 static void __exit platform_profile_exit(void)
 {
-	sysfs_remove_group(acpi_kobj, &platform_profile_group);
+	if (acpi_kobj)
+		sysfs_remove_group(acpi_kobj, &platform_profile_group);
+
 	class_unregister(&platform_profile_class);
 }
 module_init(platform_profile_init);

drivers/hid/Kconfig

@@ -570,8 +570,7 @@ config HID_LED
 
 config HID_LENOVO
 	tristate "Lenovo / Thinkpad devices"
-	depends on ACPI
-	select ACPI_PLATFORM_PROFILE
+	select ACPI_PLATFORM_PROFILE if ACPI
 	select NEW_LEDS
 	select LEDS_CLASS
 	help

drivers/hid/hid-lenovo.c

@@ -728,7 +728,7 @@ static int lenovo_raw_event_TP_X12_tab(struct hid_device *hdev, u32 raw_data)
 			if (hdev->product == USB_DEVICE_ID_LENOVO_X12_TAB) {
 				report_key_event(input, KEY_RFKILL);
 				return 1;
-			} else {
+			} else if (IS_ENABLED(CONFIG_ACPI_PLATFORM_PROFILE)) {
 				platform_profile_cycle();
 				return 1;
 			}

drivers/watchdog/apple_wdt.c

@@ -95,9 +95,12 @@ static int apple_wdt_ping(struct watchdog_device *wdd)
 static int apple_wdt_set_timeout(struct watchdog_device *wdd, unsigned int s)
 {
 	struct apple_wdt *wdt = to_apple_wdt(wdd);
+	u32 actual;
 
 	writel_relaxed(0, wdt->regs + APPLE_WDT_WD1_CUR_TIME);
-	writel_relaxed(wdt->clk_rate * s, wdt->regs + APPLE_WDT_WD1_BITE_TIME);
+
+	actual = min(s, wdd->max_hw_heartbeat_ms / 1000);
+	writel_relaxed(wdt->clk_rate * actual, wdt->regs + APPLE_WDT_WD1_BITE_TIME);
 
 	wdd->timeout = s;
 
@@ -177,7 +180,7 @@ static int apple_wdt_probe(struct platform_device *pdev)
 
 	wdt->wdd.ops = &apple_wdt_ops;
 	wdt->wdd.info = &apple_wdt_info;
-	wdt->wdd.max_timeout = U32_MAX / wdt->clk_rate;
+	wdt->wdd.max_hw_heartbeat_ms = U32_MAX / wdt->clk_rate * 1000;
 	wdt->wdd.timeout = APPLE_WDT_TIMEOUT_DEFAULT;
 
 	wdt_ctrl = readl_relaxed(wdt->regs + APPLE_WDT_WD1_CTRL);