diff options
Diffstat (limited to 'acpi-video-Unregister-the-backlight-device-if-a-raw-.patch')
| -rw-r--r-- | acpi-video-Unregister-the-backlight-device-if-a-raw-.patch | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/acpi-video-Unregister-the-backlight-device-if-a-raw-.patch b/acpi-video-Unregister-the-backlight-device-if-a-raw-.patch deleted file mode 100644 index f922d4235..000000000 --- a/acpi-video-Unregister-the-backlight-device-if-a-raw-.patch +++ /dev/null @@ -1,130 +0,0 @@ -Bugzilla: 1093171 -Upstream-status: Queued for 3.16 - -From 7f5b3e9378c0adfdb1cf2ffde6c4f890e05517c7 Mon Sep 17 00:00:00 2001 -From: Hans de Goede <hdegoede@redhat.com> -Date: Mon, 2 Jun 2014 17:41:09 +0200 -Subject: [PATCH 12/14] acpi-video: Unregister the backlight device if a raw - one shows up later - -When video.use_native_backlight=1 and non intel gfx are in use, the raw -backlight device of the gfx driver will show up after acpi-video has done its -acpi_video_verify_backlight_support() check. - -This causes video.use_native_backlight=1 to not have the desired result. - -This patch fixes this by adding a backlight notifier and when a raw -backlight is registered or unregistered re-doing the -acpi_video_verify_backlight_support() check. - -Signed-off-by: Hans de Goede <hdegoede@redhat.com> ---- - drivers/acpi/video.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++ - 1 file changed, 57 insertions(+) - -diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c -index d4d6ea3ac77a..ab7cd65ce21e 100644 ---- a/drivers/acpi/video.c -+++ b/drivers/acpi/video.c -@@ -151,6 +151,7 @@ struct acpi_video_enumerated_device { - struct acpi_video_bus { - struct acpi_device *device; - bool backlight_registered; -+ bool backlight_notifier_registered; - u8 dos_setting; - struct acpi_video_enumerated_device *attached_array; - u8 attached_count; -@@ -162,6 +163,7 @@ struct acpi_video_bus { - struct input_dev *input; - char phys[32]; /* for input device */ - struct notifier_block pm_nb; -+ struct notifier_block backlight_nb; - }; - - struct acpi_video_device_flags { -@@ -1732,6 +1734,9 @@ static int acpi_video_bus_register_backlight(struct acpi_video_bus *video) - { - struct acpi_video_device *dev; - -+ if (video->backlight_registered) -+ return 0; -+ - if (!acpi_video_verify_backlight_support()) - return 0; - -@@ -1876,6 +1881,56 @@ static void acpi_video_bus_remove_notify_handler(struct acpi_video_bus *video) - video->input = NULL; - } - -+static int acpi_video_backlight_notify(struct notifier_block *nb, -+ unsigned long val, void *bd) -+{ -+ struct backlight_device *backlight = bd; -+ struct acpi_video_bus *video; -+ -+ /* acpi_video_verify_backlight_support only cares about raw devices */ -+ if (backlight->props.type != BACKLIGHT_RAW) -+ return NOTIFY_DONE; -+ -+ video = container_of(nb, struct acpi_video_bus, backlight_nb); -+ -+ switch (val) { -+ case BACKLIGHT_REGISTERED: -+ if (!acpi_video_verify_backlight_support()) -+ acpi_video_bus_unregister_backlight(video); -+ break; -+ case BACKLIGHT_UNREGISTERED: -+ acpi_video_bus_register_backlight(video); -+ break; -+ } -+ -+ return NOTIFY_OK; -+} -+ -+static int acpi_video_bus_add_backlight_notify_handler( -+ struct acpi_video_bus *video) -+{ -+ int error; -+ -+ video->backlight_nb.notifier_call = acpi_video_backlight_notify; -+ video->backlight_nb.priority = 0; -+ error = backlight_register_notifier(&video->backlight_nb); -+ if (error == 0) -+ video->backlight_notifier_registered = true; -+ -+ return error; -+} -+ -+static int acpi_video_bus_remove_backlight_notify_handler( -+ struct acpi_video_bus *video) -+{ -+ if (!video->backlight_notifier_registered) -+ return 0; -+ -+ video->backlight_notifier_registered = false; -+ -+ return backlight_unregister_notifier(&video->backlight_nb); -+} -+ - static int acpi_video_bus_put_devices(struct acpi_video_bus *video) - { - struct acpi_video_device *dev, *next; -@@ -1957,6 +2012,7 @@ static int acpi_video_bus_add(struct acpi_device *device) - - acpi_video_bus_register_backlight(video); - acpi_video_bus_add_notify_handler(video); -+ acpi_video_bus_add_backlight_notify_handler(video); - - return 0; - -@@ -1980,6 +2036,7 @@ static int acpi_video_bus_remove(struct acpi_device *device) - - video = acpi_driver_data(device); - -+ acpi_video_bus_remove_backlight_notify_handler(video); - acpi_video_bus_remove_notify_handler(video); - acpi_video_bus_unregister_backlight(video); - acpi_video_bus_put_devices(video); --- -1.9.0 - |