From: Arvind Yadav <arvind.yadav.cs@gmail.com>
Date: Mon, 22 May 2017 10:31:48 +0000 (+0530)
Subject: dmaengine: DW DMAC: Handle return value of clk_prepare_enable
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=702fce05f5ad0e2af2c00d5ef41356ffdd4a3a56;p=linux.git

dmaengine: DW DMAC: 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>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c
index c639c60b825ab..bc31fe8020619 100644
--- a/drivers/dma/dw/platform.c
+++ b/drivers/dma/dw/platform.c
@@ -306,8 +306,12 @@ static int dw_resume_early(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct dw_dma_chip *chip = platform_get_drvdata(pdev);
+	int ret;
+
+	ret = clk_prepare_enable(chip->clk);
+	if (ret)
+		return ret;
 
-	clk_prepare_enable(chip->clk);
 	return dw_dma_enable(chip);
 }