[PATCH v1] PM / devfreq: exynos-ppmu : Handle return value of clk_prepare_enable

From	Arvind Yadav <arvind.yadav.cs@gmail.com>
Newsgroups	linux.kernel
Subject	[PATCH v1] PM / devfreq: exynos-ppmu : Handle return value of clk_prepare_enable
Date	2017-05-19 13:00 +0200
Message-ID	<tINNw-Zy-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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clk_prepare_enable() can fail here and we must check its return value.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
 drivers/devfreq/event/exynos-ppmu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/devfreq/event/exynos-ppmu.c b/drivers/devfreq/event/exynos-ppmu.c
index 9b73509..8f6537a 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;
 }
-- 
1.9.1

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[PATCH v1] PM / devfreq: exynos-ppmu : Handle return value of clk_prepare_enable Arvind Yadav <arvind.yadav.cs@gmail.com> - 2017-05-19 13:00 +0200
  Re: [PATCH v1] PM / devfreq: exynos-ppmu : Handle return value of  clk_prepare_enable Chanwoo Choi <cw00.choi@samsung.com> - 2017-05-23 11:50 +0200
    RE: Re: [PATCH v1] PM / devfreq: exynos-ppmu : Handle return value  of clk_prepare_enable MyungJoo Ham <myungjoo.ham@samsung.com> - 2017-05-24 03:40 +0200
      Re: [PATCH v1] PM / devfreq: exynos-ppmu : Handle return value of  clk_prepare_enable Chanwoo Choi <cw00.choi@samsung.com> - 2017-05-24 04:00 +0200

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