linux-kernel - [PATCH 4/6] mtd: nand: vf610_nfc: Handle return value of clk_prepare

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Date:   Tue,  1 Aug 2017 17:09:18 +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 4/6] mtd: nand: vf610_nfc: 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/vf610_nfc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/vf610_nfc.c b/drivers/mtd/nand/vf610_nfc.c
index 744ab10..db03d4f 100644
--- a/drivers/mtd/nand/vf610_nfc.c
+++ b/drivers/mtd/nand/vf610_nfc.c
@@ -816,10 +816,13 @@ static int vf610_nfc_resume(struct device *dev)
 {
 	struct mtd_info *mtd = dev_get_drvdata(dev);
 	struct vf610_nfc *nfc = mtd_to_nfc(mtd);
+	int ret;
 
 	pinctrl_pm_select_default_state(dev);
 
-	clk_prepare_enable(nfc->clk);
+	ret = clk_prepare_enable(nfc->clk);
+	if (ret)
+		return ret;
 
 	vf610_nfc_preinit_controller(nfc);
 	vf610_nfc_init_controller(nfc);
-- 
1.9.1