From: Arvind Yadav <arvind.yadav.cs@gmail.com>
Date: Tue, 25 Jul 2017 10:14:31 +0000 (+0530)
Subject: ASoC: samsung: i2s: Handle return value of clk_prepare_enable.
X-Git-Tag: v4.15-rc1~18^2~13^2~2^2~15
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=f5c97c7b0438bec0aad9738af1baa698dae5bc09;p=platform%2Fkernel%2Flinux-exynos.git

ASoC: samsung: i2s: 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>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index c9f87f7..daf7b89 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -551,7 +551,9 @@ static int i2s_set_sysclk(struct snd_soc_dai *dai,
 				goto err;
 			}
 
-			clk_prepare_enable(i2s->op_clk);
+			ret = clk_prepare_enable(i2s->op_clk);
+			if (ret)
+				goto err;
 			i2s->rclk_srcrate = clk_get_rate(i2s->op_clk);
 
 			/* Over-ride the other's */
@@ -1133,10 +1135,19 @@ static int i2s_runtime_suspend(struct device *dev)
 static int i2s_runtime_resume(struct device *dev)
 {
 	struct i2s_dai *i2s = dev_get_drvdata(dev);
+	int ret;
 
-	clk_prepare_enable(i2s->clk);
-	if (i2s->op_clk)
-		clk_prepare_enable(i2s->op_clk);
+	ret = clk_prepare_enable(i2s->clk);
+	if (ret)
+		return ret;
+
+	if (i2s->op_clk) {
+		ret = clk_prepare_enable(i2s->op_clk);
+		if (ret) {
+			clk_disable_unprepare(i2s->clk);
+			return ret;
+		}
+	}
 
 	writel(i2s->suspend_i2scon, i2s->addr + I2SCON);
 	writel(i2s->suspend_i2smod, i2s->addr + I2SMOD);