PM / devfreq: exynos-nocp: 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@gmail.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@samsung.com>

diff --git a/drivers/devfreq/event/exynos-nocp.c b/drivers/devfreq/event/exynos-nocp.c
index 5c3e7b1..f6e7956 100644 (file)
--- a/drivers/devfreq/event/exynos-nocp.c
+++ b/drivers/devfreq/event/exynos-nocp.c
@@ -267,7 +267,11 @@ static int exynos_nocp_probe(struct platform_device *pdev)
        }
        platform_set_drvdata(pdev, nocp);
 
-       clk_prepare_enable(nocp->clk);
+       ret = clk_prepare_enable(nocp->clk);
+       if (ret) {
+               dev_err(&pdev->dev, "failed to prepare ppmu clock\n");
+               return ret;
+       }
 
        pr_info("exynos-nocp: new NoC Probe device registered: %s\n",
                        dev_name(dev));