drm: sun4i: do cleanup if RGB output init fails
authorChen-Yu Tsai <wens@csie.org>
Tue, 17 May 2016 15:56:06 +0000 (23:56 +0800)
committerMaxime Ripard <maxime.ripard@free-electrons.com>
Mon, 30 May 2016 06:28:33 +0000 (08:28 +0200)
commit13fef095bde04228316046f997eb963285d8532e
treea2548963041b9da7b3da20de8c4b6c88c38437f2
parent7aa2e2b731b337a7bc74cd076bbcd6b8b4b95fbf
drm: sun4i: do cleanup if RGB output init fails

sun4i_rgb_init() can fail, which results in TCON failing to bind.
In this case we need to do cleanup, specificly unregistering the
dotclock, which is regmap based, and the regmap is registered as
part of the sun4i_tcon_bind().

Failing to do so results in a NULL pointer reference when the CCF
tries to turn off unused clocks.

Fixes: 29e57fab97fc ("drm: sun4i: Add RGB output")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
drivers/gpu/drm/sun4i/sun4i_tcon.c