From: Zhang Zekun <zhangzekun11@huawei.com>
Date: Tue, 2 Aug 2022 08:50:50 +0000 (+0000)
Subject: drm/tegra: Add missing clk_disable_unprepare() in tegra_dc_probe()
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=a5d99bf9cf7770b871e4a4f194d429b216888758;p=users%2Fjedix%2Flinux-maple.git

drm/tegra: Add missing clk_disable_unprepare() in tegra_dc_probe()

[ Upstream commit 7ad4384d53c67672a8720cdc2ef638d7d1710ab8 ]

Add the missing clk_disable_unprepare() before return from
tegra_dc_probe() in the error handling path.

Fixes: f68ba6912bd2 ("drm/tegra: dc: Link DC1 to DC0 on Tegra20")
Signed-off-by: Zhang Zekun <zhangzekun11@huawei.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
index bd0f60704467..a67453cee883 100644
--- a/drivers/gpu/drm/tegra/dc.c
+++ b/drivers/gpu/drm/tegra/dc.c
@@ -3205,8 +3205,10 @@ static int tegra_dc_probe(struct platform_device *pdev)
 	usleep_range(2000, 4000);
 
 	err = reset_control_assert(dc->rst);
-	if (err < 0)
+	if (err < 0) {
+		clk_disable_unprepare(dc->clk);
 		return err;
+	}
 
 	usleep_range(2000, 4000);