diff options
| author | Marc Dietrich | 2019-07-02 22:08:33 +0200 |
|---|---|---|
| committer | Anatolij Gustschin | 2019-07-06 23:31:52 +0200 |
| commit | a2c4ef097774e70f0afc4ab25f53b769c6da3397 (patch) | |
| tree | d12e595c7ce710091235320838dd6eaa00b0741a /drivers/video | |
| parent | 1f83431f0053f6fb20c511c391ffc687433848cf (diff) | |
video: backlight: fix pwm inversion
set_pwm() will always fail with -ENOSYS if pwm_ops set_invert() is
not implemented, leaving the backlight dark. Fix this by returning
no error if set_invert() is not implemented and no polarity change
is requested.
Fixes: 57e7775413 ("video: backlight: Parse PWM polarity cell")
Signed-off-by: Marc Dietrich <marvin24@gmx.de>
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/pwm_backlight.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/pwm_backlight.c b/drivers/video/pwm_backlight.c index a587977c225..ad20bf2441f 100644 --- a/drivers/video/pwm_backlight.c +++ b/drivers/video/pwm_backlight.c @@ -67,6 +67,9 @@ static int set_pwm(struct pwm_backlight_priv *priv) return log_ret(ret); ret = pwm_set_invert(priv->pwm, priv->channel, priv->polarity); + if (ret == -ENOSYS && !priv->polarity) + ret = 0; + return log_ret(ret); } |