[PATCH 5/6] mtd: nand: lpc32xx_mlc: Handle return value of clk_prepare_enable.

From	Arvind Yadav <arvind.yadav.cs@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH 5/6] mtd: nand: lpc32xx_mlc: Handle return value of clk_prepare_enable.
Date	2017-08-01 13:50 +0200
Message-ID	<u9DQu-3tn-17@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
 drivers/mtd/nand/lpc32xx_mlc.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/mtd/nand/lpc32xx_mlc.c b/drivers/mtd/nand/lpc32xx_mlc.c
index 846a66c..91ee3696 100644
--- a/drivers/mtd/nand/lpc32xx_mlc.c
+++ b/drivers/mtd/nand/lpc32xx_mlc.c
@@ -705,7 +705,9 @@ static int lpc32xx_nand_probe(struct platform_device *pdev)
 		res = -ENOENT;
 		goto err_exit1;
 	}
-	clk_prepare_enable(host->clk);
+	res = clk_prepare_enable(host->clk);
+	if (res)
+		goto err_exit1;
 
 	nand_chip->cmd_ctrl = lpc32xx_nand_cmd_ctrl;
 	nand_chip->dev_ready = lpc32xx_nand_device_ready;
@@ -846,9 +848,12 @@ static int lpc32xx_nand_remove(struct platform_device *pdev)
 static int lpc32xx_nand_resume(struct platform_device *pdev)
 {
 	struct lpc32xx_nand_host *host = platform_get_drvdata(pdev);
+	int ret;
 
 	/* Re-enable NAND clock */
-	clk_prepare_enable(host->clk);
+	ret = clk_prepare_enable(host->clk);
+	if (ret)
+		return ret;
 
 	/* Fresh init of NAND controller */
 	lpc32xx_nand_setup(host);
-- 
1.9.1

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[PATCH 5/6] mtd: nand: lpc32xx_mlc: Handle return value of clk_prepare_enable. Arvind Yadav <arvind.yadav.cs@gmail.com> - 2017-08-01 13:50 +0200

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