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* [PATCH -next] backlight: backlight: Use DEFINE_MUTEX() for mutex lock
@ 2021-04-05 10:14 Zheng Yongjun
  2021-04-06  8:51 ` Daniel Thompson
  0 siblings, 1 reply; 2+ messages in thread
From: Zheng Yongjun @ 2021-04-05 10:14 UTC (permalink / raw)
  To: zhengyongjun3, Lee Jones, Daniel Thompson, Jingoo Han
  Cc: dri-devel, linux-fbdev, kernel-janitors, Hulk Robot

mutex lock can be initialized automatically with DEFINE_MUTEX()
rather than explicitly calling mutex_init().

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
---
 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;


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2021-04-05 10:14 [PATCH -next] backlight: backlight: Use DEFINE_MUTEX() for mutex lock Zheng Yongjun
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