[PATCH v3 1/1] ASoC: imx-audmux: fix return value checks of clk_prepare_enable()

[Yuanjun Gong]

check the return value of clk_prepare_enable(), and if
clk_prepare_enable() gets an unexpected return value,
imx_audmux_suspend() and imx_audmux_resume() should return
the error value.

Signed-off-by: Yuanjun Gong <ruc_gongyuan...@163.com>
---
 sound/soc/fsl/imx-audmux.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/sound/soc/fsl/imx-audmux.c b/sound/soc/fsl/imx-audmux.c
index be003a117b39..096705ec2add 100644
--- a/sound/soc/fsl/imx-audmux.c
+++ b/sound/soc/fsl/imx-audmux.c
@@ -324,9 +324,11 @@ static void imx_audmux_remove(struct platform_device *pdev)
 #ifdef CONFIG_PM_SLEEP
 static int imx_audmux_suspend(struct device *dev)
 {
-       int i;
+       int i, ret;
 
-       clk_prepare_enable(audmux_clk);
+       ret = clk_prepare_enable(audmux_clk);
+       if (ret)
+               return ret;
 
        for (i = 0; i < reg_max; i++)
                regcache[i] = readl(audmux_base + i * 4);
@@ -338,9 +340,11 @@ static int imx_audmux_suspend(struct device *dev)
 
 static int imx_audmux_resume(struct device *dev)
 {
-       int i;
+       int i, ret;
 
-       clk_prepare_enable(audmux_clk);
+       ret = clk_prepare_enable(audmux_clk);
+       if (ret)
+               return ret;
 
        for (i = 0; i < reg_max; i++)
                writel(regcache[i], audmux_base + i * 4);
-- 
2.17.1