Attachment 908679 Details for Bug 1094512 – PATCH to only show one backlight interface

[patch] PATCH to only show one backlight interface

0001-acpi-video-Only-register-a-backlight-interface-for-l.patch (text/plain), 1.23 KB, created by Hans de Goede on 2014-06-13 18:21:06 UTC

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Creator: Hans de Goede

Created: 2014-06-13 18:21:06 UTC

Size: 1.23 KB

patch

obsolete

>From dd01f2dce325eddd681417902861ee1b1888029d Mon Sep 17 00:00:00 2001
>From: Hans de Goede <hdegoede@redhat.com>
>Date: Fri, 13 Jun 2014 15:50:41 +0200
>Subject: [PATCH] acpi-video: Only register a backlight interface for lcd
> devices
>
>Some broken BIOS-es report one and the same brightness interface on all devices
>on the video-bus, check for the device being a lcd device before registering,
>to avoid registering multiple brightness devices in this case.
>
>https://bugzilla.redhat.com/show_bug.cgi?id=1094512
>
>Signed-off-by: Hans de Goede <hdegoede@redhat.com>
>---
> drivers/acpi/video.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
>diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
>index 80a429a..56e1921 100644
>--- a/drivers/acpi/video.c
>+++ b/drivers/acpi/video.c
>@@ -1717,6 +1717,14 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device)
> 		static int count;
> 		char *name;
> 
>+		/*
>+		 * Some broken BIOS-es report one and the same brightness interface on
>+		 * all devices on the video-bus, check for the device being a lcd
>+		 * device to avoid registering multiple brightness devices.
>+		 */
>+		if (!device->flags.lcd)
>+			return;
>+
> 		result = acpi_video_init_brightness(device);
> 		if (result)
> 			return;
>-- 
>2.0.0
>

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Attachments on bug 1094512: 903323 | 904668 | 904669 | 908112 | 908679