From patchwork Thu Dec 13 13:58:46 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [161/241] ACPI video: Ignore errors after _DOD evaluation. Date: Thu, 13 Dec 2012 03:58:46 -0000 From: Herton Ronaldo Krzesinski X-Patchwork-Id: 206008 Message-Id: <1355407206-17100-162-git-send-email-herton.krzesinski@canonical.com> To: linux-kernel@vger.kernel.org, stable@vger.kernel.org, kernel-team@lists.ubuntu.com Cc: Igor Murzov , Zhang Rui 3.5.7.2 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Igor Murzov 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 Reviewed-by: Sergey V Signed-off-by: Zhang Rui Signed-off-by: Herton Ronaldo Krzesinski --- drivers/acpi/video.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 1e0a9e1..9fe2659 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) {