mtd: nand: pxa3xx: Check for clk_prepare_enable() return value

clk_prepare_enable() can fail due to unknown reason.
Add a check for this and return the error code if it fails.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 1c03f9c..0f820ca 100644 (file)
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -1072,7 +1072,9 @@ static int alloc_nand_resource(struct platform_device *pdev)
                dev_err(&pdev->dev, "failed to get nand clock\n");
                return PTR_ERR(info->clk);
        }
-       clk_prepare_enable(info->clk);
+       ret = clk_prepare_enable(info->clk);
+       if (ret < 0)
+               return ret;
 
        /*
         * This is a dirty hack to make this driver work from devicetree