tree d12e595c7ce710091235320838dd6eaa00b0741a
parent 1f83431f0053f6fb20c511c391ffc687433848cf
author Marc Dietrich <marvin24@gmx.de> 1562098113 +0200
committer Anatolij Gustschin <agust@denx.de> 1562448712 +0200

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>