3.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Igor Murzov <e-m...@date.by>

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 <e-m...@date.by>
Reviewed-by: Sergey V <sftp.mt...@gmail.com>
Signed-off-by: Zhang Rui <rui.zh...@intel.com>
Signed-off-by: Abdallah Chatila <abdallah.chat...@ericsson.com>

---
 drivers/acpi/video.c |   11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

--- 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) {
 


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