From: Arvind Yadav <arvind.yadav.cs@gmail.com>
Date: Fri, 19 May 2017 10:56:04 +0000 (+0530)
Subject: PM / devfreq: exynos-ppmu: Handle return value of clk_prepare_enable
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=97a6ba5bd0b54544fabe090711fabefc7a703a5f;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

PM / devfreq: exynos-ppmu: 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-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c
index 9b7350935b73..8f6537aa989b 100644
--- a/drivers/devfreq/event/exynos-ppmu.c
+++ b/drivers/devfreq/event/exynos-ppmu.c
@@ -648,7 +648,11 @@ static int exynos_ppmu_probe(struct platform_device *pdev)
 			dev_name(&pdev->dev), desc[i].name);
 	}
 
-	clk_prepare_enable(info->ppmu.clk);
+	ret = clk_prepare_enable(info->ppmu.clk);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to prepare ppmu clock\n");
+		return ret;
+	}
 
 	return 0;
 }