@@ -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) {
This is a note to let you know that I have just added a patch titled ACPI video: Ignore errors after _DOD evaluation. to the linux-3.5.y-queue branch of the 3.5.y.z extended stable tree which can be found at: http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.5.y-queue If you, or anyone else, feels it should not be added to this tree, please reply to this email. For more information about the 3.5.y.z tree, see https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable Thanks. -Herton ------ From 39dc64845989196fa92bd3b0a726952f3a634082 Mon Sep 17 00:00:00 2001 From: Igor Murzov <e-mail@date.by> Date: Sat, 13 Oct 2012 04:41:25 +0400 Subject: [PATCH 05/11] 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 <e-mail@date.by> Reviewed-by: Sergey V <sftp.mtuci@gmail.com> Signed-off-by: Zhang Rui <rui.zhang@intel.com> Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com> --- drivers/acpi/video.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) -- 1.7.9.5