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video: Check return value in pwm_backlight_of_to_plat()

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This cannot actually fail, but check the value anyway to keep coverity
happy.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Coverity (CID: 316351)
This commit is contained in:
Simon Glass 2021-05-13 19:39:18 -06:00 committed by Tom Rini
parent 9d9bec216d
commit 92598bdbae
1 changed files with 4 additions and 2 deletions
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6
drivers/video/pwm_backlight.c
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@ -235,8 +235,10 @@ static int pwm_backlight_of_to_plat(struct udevice *dev)
priv->levels = malloc(len);
if (!priv->levels)
return log_ret(-ENOMEM);
dev_read_u32_array(dev, "brightness-levels", priv->levels,
count);
ret = dev_read_u32_array(dev, "brightness-levels", priv->levels,
count);
if (ret)
return log_msg_ret("levels", ret);
priv->num_levels = count;
priv->default_level = priv->levels[index];
priv->max_level = priv->levels[count - 1];