acpi/video_detect: blacklist samsung x360 (084940d5) · Commits · 戴 / test

drivers/acpi/video_detect.c

+29 −0

Original line number	Diff line number	Diff line
		@@ -132,6 +132,33 @@ find_video(acpi_handle handle, u32 lvl, void context, void *rv)
		return AE_OK;
		}

		/* Force to use vendor driver when the ACPI device is known to be
		* buggy */
		static int video_detect_force_vendor(const struct dmi_system_id *d)
		{
		acpi_video_support \|= ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
		return 0;
		}

		static struct dmi_system_id video_detect_dmi_table[] = {
		/* On Samsung X360, the BIOS will set a flag (VDRV) if generic
		* ACPI backlight device is used. This flag will definitively break
		* the backlight interface (even the vendor interface) untill next
		* reboot. It's why we should prevent video.ko from being used here
		* and we can't rely on a later call to acpi_video_unregister().
		*/
		{
		.callback = video_detect_force_vendor,
		.ident = "X360",
		.matches = {
		DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
		DMI_MATCH(DMI_PRODUCT_NAME, "X360"),
		DMI_MATCH(DMI_BOARD_NAME, "X360"),
		},
		},
		{ },
		};

		/*
		* Returns the video capabilities of a specific ACPI graphics device
		*
		@@ -164,6 +191,8 @@ long acpi_video_get_capabilities(acpi_handle graphics_handle)
		* ACPI_VIDEO_BACKLIGHT_DMI_VENDOR;
		*}
		*/

		dmi_check_system(video_detect_dmi_table);
		} else {
		status = acpi_bus_get_device(graphics_handle, &tmp_dev);
		if (ACPI_FAILURE(status)) {