diff options
| author | Zhang Rui <rui.zhang@intel.com> | 2022-05-19 22:37:32 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-05-19 20:07:54 +0200 |
| commit | 1934fee67593c561ef883761bf2ddee82f908ed9 (patch) | |
| tree | 3bf266a2518bdb9c352cde1db9df4db61e7d67f0 /drivers/acpi/acpi_video.c | |
| parent | 42226c989789d8da4af1de0c31070c96726d990c (diff) | |
ACPI: video: improve PM notifer callback
PM notifier callbacks should check for supported events rather than filter
out the unsupported events. So that it won't break when a new event is
introduced.
No functional change in this patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/acpi_video.c')
| -rw-r--r-- | drivers/acpi/acpi_video.c | 31 |
1 files changed, 15 insertions, 16 deletions
diff --git a/drivers/acpi/acpi_video.c b/drivers/acpi/acpi_video.c index 990ff5b0aeb8..e07782b1fbb6 100644 --- a/drivers/acpi/acpi_video.c +++ b/drivers/acpi/acpi_video.c @@ -1707,24 +1707,23 @@ static int acpi_video_resume(struct notifier_block *nb, int i; switch (val) { - case PM_HIBERNATION_PREPARE: - case PM_SUSPEND_PREPARE: - case PM_RESTORE_PREPARE: - return NOTIFY_DONE; - } - - video = container_of(nb, struct acpi_video_bus, pm_nb); - - dev_info(&video->device->dev, "Restoring backlight state\n"); + case PM_POST_HIBERNATION: + case PM_POST_SUSPEND: + case PM_POST_RESTORE: + video = container_of(nb, struct acpi_video_bus, pm_nb); + + dev_info(&video->device->dev, "Restoring backlight state\n"); + + for (i = 0; i < video->attached_count; i++) { + video_device = video->attached_array[i].bind_info; + if (video_device && video_device->brightness) + acpi_video_device_lcd_set_level(video_device, + video_device->brightness->curr); + } - for (i = 0; i < video->attached_count; i++) { - video_device = video->attached_array[i].bind_info; - if (video_device && video_device->brightness) - acpi_video_device_lcd_set_level(video_device, - video_device->brightness->curr); + return NOTIFY_OK; } - - return NOTIFY_OK; + return NOTIFY_DONE; } static acpi_status |