[PATCH -next] backlight: backlight: Use DEFINE_MUTEX() for mutex lock
From: Zheng Yongjun <hidden>
Date: 2021-04-05 10:54:46
Also in:
dri-devel, kernel-janitors
Subsystem:
backlight class/subsystem, framebuffer layer, the rest · Maintainers:
Lee Jones, Daniel Thompson, Jingoo Han, Helge Deller, Linus Torvalds
mutex lock can be initialized automatically with DEFINE_MUTEX() rather than explicitly calling mutex_init(). Reported-by: Hulk Robot <redacted> Signed-off-by: Zheng Yongjun <redacted> --- 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;