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drm/rockchip: cdn-dp-core: add missing clk_disable_unprepare() on error in cdn_dp_grf_write() 

[ Upstream commit ae41d925c75b53798f289c69ee8d9f7d36432f6d ]

After calling clk_prepare_enable(), clk_disable_unprepare() need
be called when calling regmap_write() failed.

Fixes: 1a0f7ed3ab ("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-yangyingliang@huawei.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yang Yingliang 2021-05-19 21:49:28 +08:00 committed by Greg Kroah-Hartman
parent 01f4245ff7
commit 450c25b8a4
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/rockchip/cdn-dp-core.c
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@ -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;
}