[PATCH v1] PM / devfreq: exynos-ppmu : Handle return value of clk_prepare_enable
From: Arvind Yadav <hidden>
Date: 2017-05-19 10:57:35
Also in:
linux-pm, linux-samsung-soc, lkml
Subsystem:
device frequency (devfreq), device frequency event (devfreq-event), the rest · Maintainers:
MyungJoo Ham, Kyungmin Park, Chanwoo Choi, Linus Torvalds
clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <redacted> --- 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