linux-kernel - [PATCH 1/6] mtd: nand: denali: Handle return value of clk_prepare

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Message-Id: <1501587309-20900-2-git-send-email-arvind.yadav.cs@gmail.com>
Date:   Tue,  1 Aug 2017 17:05:09 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     boris.brezillon@...e-electrons.com, richard@....at,
        dwmw2@...radead.org, computersforpeace@...il.com,
        marek.vasut@...il.com, cyrille.pitchen@...ev4u.fr,
        narmstrong@...libre.com
Cc:     linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/6] mtd: nand: denali: Handle return value of clk_prepare_enable.

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

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/mtd/nand/denali_dt.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/denali_dt.c b/drivers/mtd/nand/denali_dt.c
index 47f398e..56e2e17 100644
--- a/drivers/mtd/nand/denali_dt.c
+++ b/drivers/mtd/nand/denali_dt.c
@@ -118,7 +118,9 @@ static int denali_dt_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "no clk available\n");
 		return PTR_ERR(dt->clk);
 	}
-	clk_prepare_enable(dt->clk);
+	ret = clk_prepare_enable(dt->clk);
+	if (ret)
+		return ret;
 
 	denali->clk_x_rate = clk_get_rate(dt->clk);
 
-- 
1.9.1