drm/bridge: anx7625: Check GPIO description to avoid crash
authorXin Ji <xji@analogixsemi.com>
Fri, 19 Nov 2021 01:58:04 +0000 (09:58 +0800)
committerRobert Foss <robert.foss@linaro.org>
Tue, 4 Jan 2022 13:40:10 +0000 (14:40 +0100)
commit7020449b8f5ac0f7444a584645edec02f7168f1a
treebb423f31df6c57bd57b4e1c4ea0e364ccec8868d
parent1726cee3d0537baa58dc58cf0a1630aa7ce93af7
drm/bridge: anx7625: Check GPIO description to avoid crash

As GPIO probe function "devm_gpiod_get_optional()" may return error
code, driver should identify GPIO desc as NULL to avoid crash.

Acked-by: Tzung-Bi Shih <tzungbi@google.com>
Signed-off-by: Xin Ji <xji@analogixsemi.com>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211119015804.3824027-1-xji@analogixsemi.com
Reviewed-by: Robert Foss <robert.foss@linaro.org>
drivers/gpu/drm/bridge/analogix/anx7625.c