[PATCH 1/4] backlight: da9052: Fully initialize backlight_properties during probe

From: Daniel Thompson
Date: Tue Feb 20 2024 - 10:30:36 EST


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>
---
drivers/video/backlight/da9052_bl.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/video/backlight/da9052_bl.c b/drivers/video/backlight/da9052_bl.c
index 1cdc8543310b4..b8ff7046510eb 100644
--- a/drivers/video/backlight/da9052_bl.c
+++ b/drivers/video/backlight/da9052_bl.c
@@ -117,6 +117,7 @@ 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;

--
2.43.0