--- zzzz-none-000/linux-3.10.107/drivers/platform/x86/msi-laptop.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/platform/x86/msi-laptop.c	2021-02-04 17:41:59.000000000 +0000
@@ -64,6 +64,7 @@
 #include <linux/i8042.h>
 #include <linux/input.h>
 #include <linux/input/sparse-keymap.h>
+#include <acpi/video.h>
 
 #define MSI_DRIVER_VERSION "0.5"
 
@@ -573,7 +574,6 @@
 static struct platform_driver msipf_driver = {
 	.driver = {
 		.name = "msi-laptop-pf",
-		.owner = THIS_MODULE,
 		.pm = &msi_laptop_pm,
 	},
 };
@@ -821,7 +821,7 @@
 {
 	static bool extended;
 
-	if (str & 0x20)
+	if (str & I8042_STR_AUXDATA)
 		return false;
 
 	/* 0x54 wwan, 0x62 bluetooth, 0x76 wlan, 0xE4 touchpad toggle*/
@@ -1070,9 +1070,8 @@
 
 	/* Register backlight stuff */
 
-	if (!quirks->old_ec_model || acpi_video_backlight_support()) {
-		pr_info("Brightness ignored, must be controlled by ACPI video driver\n");
-	} else {
+	if (quirks->old_ec_model ||
+	    acpi_video_get_backlight_type() == acpi_backlight_vendor) {
 		struct backlight_properties props;
 		memset(&props, 0, sizeof(struct backlight_properties));
 		props.type = BACKLIGHT_PLATFORM;
@@ -1098,29 +1097,29 @@
 
 	ret = platform_device_add(msipf_device);
 	if (ret)
-		goto fail_platform_device1;
+		goto fail_device_add;
 
 	if (quirks->load_scm_model && (load_scm_model_init(msipf_device) < 0)) {
 		ret = -EINVAL;
-		goto fail_platform_device1;
+		goto fail_scm_model_init;
 	}
 
 	ret = sysfs_create_group(&msipf_device->dev.kobj,
 				 &msipf_attribute_group);
 	if (ret)
-		goto fail_platform_device2;
+		goto fail_create_group;
 
 	if (!quirks->old_ec_model) {
 		if (threeg_exists)
 			ret = device_create_file(&msipf_device->dev,
 						&dev_attr_threeg);
 		if (ret)
-			goto fail_platform_device2;
+			goto fail_create_attr;
 	} else {
 		ret = sysfs_create_group(&msipf_device->dev.kobj,
 					 &msipf_old_attribute_group);
 		if (ret)
-			goto fail_platform_device2;
+			goto fail_create_attr;
 
 		/* Disable automatic brightness control by default because
 		 * this module was probably loaded to do brightness control in
@@ -1134,26 +1133,22 @@
 
 	return 0;
 
-fail_platform_device2:
-
+fail_create_attr:
+	sysfs_remove_group(&msipf_device->dev.kobj, &msipf_attribute_group);
+fail_create_group:
 	if (quirks->load_scm_model) {
 		i8042_remove_filter(msi_laptop_i8042_filter);
 		cancel_delayed_work_sync(&msi_rfkill_dwork);
 		cancel_work_sync(&msi_rfkill_work);
 		rfkill_cleanup();
 	}
+fail_scm_model_init:
 	platform_device_del(msipf_device);
-
-fail_platform_device1:
-
+fail_device_add:
 	platform_device_put(msipf_device);
-
 fail_platform_driver:
-
 	platform_driver_unregister(&msipf_driver);
-
 fail_backlight:
-
 	backlight_device_unregister(msibl_device);
 
 	return ret;