This is a note to let you know that I've just added the patch titled
backlight: da9052: 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-da9052-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 41ccf0ae652d300c3a2c2153b0903288f74be76a
Author: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Date: Tue Feb 20 15:35:24 2024 +0000
backlight: da9052: Fully initialize backlight_properties during probe
[ Upstream commit 0285e9efaee8276305db5c52a59baf84e9731556 ]
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: 6ede3d832aaa ("backlight: add driver for DA9052/53 PMIC v1")
Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240220153532.76613-2-daniel.thompson@xxxxxxxxxx
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/video/backlight/da9052_bl.c b/drivers/video/backlight/da9052_bl.c
index 49035c12739a1..d48513eb3bc5f 100644
--- a/drivers/video/backlight/da9052_bl.c
+++ b/drivers/video/backlight/da9052_bl.c
@@ -122,6 +122,7 @@ static int da9052_backlight_probe(struct platform_device *pdev)
wleds->led_reg = platform_get_device_id(pdev)->driver_data;
wleds->state = DA9052_WLEDS_OFF;
+ memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_RAW;
props.max_brightness = DA9052_MAX_BRIGHTNESS;
