linux-kernel - [PATCH] drm/tegra: sor: fix missing clk_disable_unprepare() on error in tegra_sor

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Date:   Fri, 30 Oct 2020 09:34:24 +0800
From:   Qinglang Miao <miaoqinglang@...wei.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Jonathan Hunter <jonathanh@...dia.com>
CC:     <dri-devel@...ts.freedesktop.org>, <linux-tegra@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Qinglang Miao <miaoqinglang@...wei.com>
Subject: [PATCH] drm/tegra: sor: fix missing clk_disable_unprepare() on error in tegra_sor_init

Fix the missing clk_disable_unprepare() before return
from tegra_sor_init() in the error handling case.

Signed-off-by: Qinglang Miao <miaoqinglang@...wei.com>
---
 drivers/gpu/drm/tegra/sor.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index e88a17c29..0103e8c16 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -3145,6 +3145,7 @@ static int tegra_sor_init(struct host1x_client *client)
 		if (err < 0) {
 			dev_err(sor->dev, "failed to deassert SOR reset: %d\n",
 				err);
+			clk_disable_unprepare(sor->clk);
 			return err;
 		}
 
@@ -3152,12 +3153,17 @@ static int tegra_sor_init(struct host1x_client *client)
 	}
 
 	err = clk_prepare_enable(sor->clk_safe);
-	if (err < 0)
+	if (err < 0) {
+		clk_disable_unprepare(sor->clk);
 		return err;
+	}
 
 	err = clk_prepare_enable(sor->clk_dp);
-	if (err < 0)
+	if (err < 0) {
+		clk_disable_unprepare(sor->clk_safe);
+		clk_disable_unprepare(sor->clk);
 		return err;
+	}
 
 	return 0;
 }
-- 
2.23.0