Patch for 3.6 & 3.4 stable trees. Please note that 3.0 stable is fine since we don't check the return value of acpi_video_device_enumerate there.
>From fba4e087361605d1eed63343bb08811f097c83ee Mon Sep 17 00:00:00 2001 From: Igor Murzov <[email protected]> Date: Sat, 13 Oct 2012 04:41:25 +0400 Subject: [PATCH] ACPI video: Ignore errors after _DOD evaluation. commit fba4e087361605d1eed63343bb08811f097c83ee upstream. There are systems where video module known to work fine regardless of broken _DOD and ignoring returned value here doesn't cause any issues later. This should fix brightness controls on some laptops. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47861 Signed-off-by: Igor Murzov <[email protected]> Reviewed-by: Sergey V <[email protected]> Signed-off-by: Zhang Rui <[email protected]> Signed-off-by: Abdallah Chatila <[email protected]> diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index f94d4c8..0230cb6 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -1345,12 +1345,15 @@ static int acpi_video_bus_get_devices(struct acpi_video_bus *video, struct acpi_device *device) { - int status; + int status = 0; struct acpi_device *dev; - status = acpi_video_device_enumerate(video); - if (status) - return status; + /* + * There are systems where video module known to work fine regardless + * of broken _DOD and ignoring returned value here doesn't cause + * any issues later. + */ + acpi_video_device_enumerate(video); list_for_each_entry(dev, &device->children, node) { -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
