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authorFabio Estevam <fabio.estevam@freescale.com>2013-07-21 14:41:38 -0300
committerHerbert Xu <herbert@gondor.apana.org.au>2013-08-01 10:53:59 +1000
commit9e01d0c6f63a59cc756c0028e17effdbadee7227 (patch)
tree04112025335600ae0c09f647803c55ef094db383 /drivers/char
parent69d2884debaa029ddcf9de4631c4c83249bc8c4d (diff)
hwrng: mxc-rnga - Check the return value from clk_prepare_enable()
clk_prepare_enable() may fail, so let's check its return value and propagate it in the case of error. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/hw_random/mxc-rnga.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c
index 19a12ac64a9e..6a86b6f56af2 100644
--- a/drivers/char/hw_random/mxc-rnga.c
+++ b/drivers/char/hw_random/mxc-rnga.c
@@ -164,7 +164,9 @@ static int __init mxc_rnga_probe(struct platform_device *pdev)
goto out;
}
- clk_prepare_enable(mxc_rng->clk);
+ err = clk_prepare_enable(mxc_rng->clk);
+ if (err)
+ goto out;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
mxc_rng->mem = devm_ioremap_resource(&pdev->dev, res);