On Wed, Dec 23, 2020 at 10:10:35PM +0800, Zheng Yongjun wrote:

Signed-off-by: Zheng Yongjun zhengyongjun3@huawei.com

Can you explain the Subject for this patch in more detail?

If this patch is required to correct a bug then it looks to me like it is incomplete.

Daniel.

---

drivers/video/backlight/backlight.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c index 537fe1b376ad..d7a09c422547 100644 --- a/drivers/video/backlight/backlight.c +++ b/drivers/video/backlight/backlight.c @@ -64,7 +64,7 @@ */

static struct list_head backlight_dev_list; -static struct mutex backlight_dev_list_mutex; +static DEFINE_MUTEX(backlight_dev_list_mutex); static struct blocking_notifier_head backlight_notifier;

static const char *const backlight_types[] = { @@ -757,7 +757,6 @@ static int __init backlight_class_init(void) backlight_class->dev_groups = bl_device_groups; backlight_class->pm = &backlight_class_dev_pm_ops; INIT_LIST_HEAD(&backlight_dev_list);

• mutex_init(&backlight_dev_list_mutex); BLOCKING_INIT_NOTIFIER_HEAD(&backlight_notifier);

  return 0;

-- 2.22.0