From mboxrd@z Thu Jan 1 00:00:00 1970 From: arvind.yadav.cs@gmail.com (Arvind Yadav) Date: Tue, 1 Aug 2017 17:08:06 +0530 Subject: [PATCH 3/6] mtd: nand: lpc32xx_slc: Handle return value of clk_prepare_enable. Message-ID: <1501587486-21184-1-git-send-email-arvind.yadav.cs@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav --- drivers/mtd/nand/lpc32xx_slc.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/nand/lpc32xx_slc.c b/drivers/mtd/nand/lpc32xx_slc.c index a0669a3..80c2829 100644 --- a/drivers/mtd/nand/lpc32xx_slc.c +++ b/drivers/mtd/nand/lpc32xx_slc.c @@ -840,7 +840,9 @@ 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; /* Set NAND IO addresses and command/ready functions */ chip->IO_ADDR_R = SLC_DATA(host->io_base); @@ -972,9 +974,12 @@ 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