linux-kernel - [PATCH 1/2] media: mipi-csis: Add check for clk

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Message-Id: <20241121210543.8190-2-jiashengjiangcool@gmail.com>
Date: Thu, 21 Nov 2024 21:05:43 +0000
From: Jiasheng Jiang <jiashengjiangcool@...il.com>
To: sylvester.nawrocki@...il.com,
	mchehab@...nel.org,
	dron0gus@...il.com,
	tomasz.figa@...il.com,
	krzk@...nel.org,
	alim.akhtar@...sung.com,
	kyungmin.park@...sung.com,
	laurent.pinchart@...asonboard.com
Cc: linux-media@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Jiasheng Jiang <jiashengjiangcool@...il.com>
Subject: [PATCH 1/2] media: mipi-csis: Add check for clk_enable()

Add check for the return value of clk_enable() to gurantee the success.

Fixes: b5f1220d587d ("[media] v4l: Add v4l2 subdev driver for S5P/EXYNOS4 MIPI-CSI receivers")
Signed-off-by: Jiasheng Jiang <jiashengjiangcool@...il.com>
---
 drivers/media/platform/samsung/exynos4-is/mipi-csis.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/media/platform/samsung/exynos4-is/mipi-csis.c b/drivers/media/platform/samsung/exynos4-is/mipi-csis.c
index 63f3eecdd7e6..d1c938065475 100644
--- a/drivers/media/platform/samsung/exynos4-is/mipi-csis.c
+++ b/drivers/media/platform/samsung/exynos4-is/mipi-csis.c
@@ -940,7 +940,9 @@ static int s5pcsis_pm_resume(struct device *dev, bool runtime)
 					       state->supplies);
 			goto unlock;
 		}
-		clk_enable(state->clock[CSIS_CLK_GATE]);
+		ret = clk_enable(state->clock[CSIS_CLK_GATE]);
+		if (ret)
+			goto unlock;
 	}
 	if (state->flags & ST_STREAMING)
 		s5pcsis_start_stream(state);
-- 
2.25.1