From: Yang Yingliang yangyingliang@huawei.com
[ Upstream commit ae41d925c75b53798f289c69ee8d9f7d36432f6d ]
After calling clk_prepare_enable(), clk_disable_unprepare() need be called when calling regmap_write() failed.
Fixes: 1a0f7ed3abe2 ("drm/rockchip: cdn-dp: add cdn DP support for rk3399") Reported-by: Hulk Robot hulkci@huawei.com Signed-off-by: Yang Yingliang yangyingliang@huawei.com Signed-off-by: Heiko Stuebner heiko@sntech.de Link: https://patchwork.freedesktop.org/patch/msgid/20210519134928.2696617-1-yangy... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/rockchip/cdn-dp-core.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c index d505ea7d5384..8f299d76b69b 100644 --- a/drivers/gpu/drm/rockchip/cdn-dp-core.c +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c @@ -72,6 +72,7 @@ static int cdn_dp_grf_write(struct cdn_dp_device *dp, ret = regmap_write(dp->grf, reg, val); if (ret) { DRM_DEV_ERROR(dp->dev, "Could not write to GRF: %d\n", ret); + clk_disable_unprepare(dp->grf_clk); return ret; }