linux-kernel - [PATCH] spi: jcore: disable clock when registering spi conroller failed When probe function fails in registering the spi controller, the clock should remain disabled.

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Message-Id: <1512641032-5848-1-git-send-email-takuo.koguchi.sw@hitachi.com>
Date:   Thu,  7 Dec 2017 19:03:47 +0900
From:   Takuo Koguchi <takuo.koguchi@...il.com>
To:     linux-kernel@...r.kernel.org, khoroshilov@...ras.ru,
        takuo.koguchi@...il.com, takuo.koguchi.sw@...achi.com
Cc:     Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org
Subject: [PATCH] spi: jcore: disable clock when registering spi conroller  failed When probe function fails in registering the spi controller, the clock should remain disabled.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Takuo Koguchi <takuo.koguchi.sw@...achi.com>
---
 Compiled test only, no runtime test done.
 
 drivers/spi/spi-jcore.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-jcore.c b/drivers/spi/spi-jcore.c
index cebfea5..dafed62 100644
--- a/drivers/spi/spi-jcore.c
+++ b/drivers/spi/spi-jcore.c
@@ -198,8 +198,10 @@ static int jcore_spi_probe(struct platform_device *pdev)
 
 	/* Register our spi controller */
 	err = devm_spi_register_master(&pdev->dev, master);
-	if (err)
+	if (err) {
+		clk_disable(clk);
 		goto exit;
+	}
 
 	return 0;
 
-- 
2.7.4