From: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
[ Upstream commit abb5a5d951fbea3feb5c4ba179b89bb96a1d3462 ]
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: 0f59858d5119 ("backlight: add new lm3639 backlight driver")
Signed-off-by: Daniel Thompson <daniel.thompson@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240220153532.76613-3-daniel.thompson@xxxxxxxxxx
Signed-off-by: Lee Jones <lee@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/video/backlight/lm3639_bl.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/video/backlight/lm3639_bl.c b/drivers/video/backlight/lm3639_bl.c
index 6580911671a3e..4c9726a7fa720 100644
--- a/drivers/video/backlight/lm3639_bl.c
+++ b/drivers/video/backlight/lm3639_bl.c
@@ -339,6 +339,7 @@ static int lm3639_probe(struct i2c_client *client,
}
/* backlight */
+ memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_RAW;
props.brightness = pdata->init_brt_led;
props.max_brightness = pdata->max_brt_led;
--
2.43.0
