This is a note to let you know that I've just added the patch titled
backlight: lp8788: Fully initialize backlight_properties during probe
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
backlight-lp8788-fully-initialize-backlight_properti.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit a3fb8e377df0a777aab77ed3d5c2ad3075c350c3
Author: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Date: Tue Feb 20 15:35:26 2024 +0000
backlight: lp8788: Fully initialize backlight_properties during probe
[ Upstream commit 392346827fbe8a7fd573dfb145170d7949f639a6 ]
props is stack allocated and the fields that are not explcitly set
by the probe function need to be zeroed or we'll get undefined behaviour
(especially so power/blank states)!
Fixes: c5a51053cf3b ("backlight: add new lp8788 backlight driver")
Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240220153532.76613-4-daniel.thompson@xxxxxxxxxx
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/video/backlight/lp8788_bl.c b/drivers/video/backlight/lp8788_bl.c
index cf869ec90cce8..a324423f30474 100644
--- a/drivers/video/backlight/lp8788_bl.c
+++ b/drivers/video/backlight/lp8788_bl.c
@@ -195,6 +195,7 @@ static int lp8788_backlight_register(struct lp8788_bl *bl)
int init_brt;
char *name;
+ memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_PLATFORM;
props.max_brightness = MAX_BRIGHTNESS;
