[PATCH] hw_random: mxc-rnga: Check the return value from clk_prepare_enable()

[Fabio Estevam]

From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>

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@xxxxxxxxxxxxx>
---
 drivers/char/hw_random/mxc-rnga.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/char/hw_random/mxc-rnga.c b/drivers/char/hw_random/mxc-rnga.c
index 19a12ac..6a86b6f 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);
-- 
1.8.1.2

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