The "num_levels" variable is used to store error codes from device_property_count_u32() so it needs to be signed. This doesn't cause an issue at runtime because devm_kcalloc() won't allocate negative sizes. However, it's still worth fixing. Fixes: b54c828bdba9 ("backlight: mp3309c: Make use of device properties") Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx> --- drivers/video/backlight/mp3309c.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/video/backlight/mp3309c.c b/drivers/video/backlight/mp3309c.c index c80a1481e742..4e98e60417d2 100644 --- a/drivers/video/backlight/mp3309c.c +++ b/drivers/video/backlight/mp3309c.c @@ -205,8 +205,9 @@ static int mp3309c_parse_fwnode(struct mp3309c_chip *chip, struct mp3309c_platform_data *pdata) { int ret, i; - unsigned int num_levels, tmp_value; + unsigned int tmp_value; struct device *dev = chip->dev; + int num_levels; if (!dev_fwnode(dev)) return dev_err_probe(dev, -ENODEV, "failed to get firmware node\n"); -- 2.43.0