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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>
This commit is contained in:
Zhang Rui 2022-05-19 22:37:32 +08:00 committed by Rafael J. Wysocki
parent 42226c9897
commit 1934fee675
1 changed files with 16 additions and 17 deletions
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33
drivers/acpi/acpi_video.c
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@ -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;
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);
}
return NOTIFY_OK;
}
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);
}
return NOTIFY_OK;
return NOTIFY_DONE;
}
static acpi_status