[PATCH] ASoC: fsl_mqs: Fix unchecked return value for clk_prepare_enable

[Shengjiu Wang]

Fix unchecked return value for clk_prepare_enable.

And because clk_prepare_enable and clk_disable_unprepare should
check input clock parameter is NULL or not, then we don't need
to check it before calling the function.

Fixes: 9e28f6532c61 ("ASoC: fsl_mqs: Add MQS component driver")
Signed-off-by: Shengjiu Wang <shengjiu.w...@nxp.com>
---
 sound/soc/fsl/fsl_mqs.c | 23 ++++++++++++++---------
 1 file changed, 14 insertions(+), 9 deletions(-)

diff --git a/sound/soc/fsl/fsl_mqs.c b/sound/soc/fsl/fsl_mqs.c
index 0c813a45bba7..69aeb0e71844 100644
--- a/sound/soc/fsl/fsl_mqs.c
+++ b/sound/soc/fsl/fsl_mqs.c
@@ -265,12 +265,20 @@ static int fsl_mqs_remove(struct platform_device *pdev)
 static int fsl_mqs_runtime_resume(struct device *dev)
 {
        struct fsl_mqs *mqs_priv = dev_get_drvdata(dev);
+       int ret;
 
-       if (mqs_priv->ipg)
-               clk_prepare_enable(mqs_priv->ipg);
+       ret = clk_prepare_enable(mqs_priv->ipg);
+       if (ret) {
+               dev_err(dev, "failed to enable ipg clock\n");
+               return ret;
+       }
 
-       if (mqs_priv->mclk)
-               clk_prepare_enable(mqs_priv->mclk);
+       ret = clk_prepare_enable(mqs_priv->mclk);
+       if (ret) {
+               dev_err(dev, "failed to enable mclk clock\n");
+               clk_disable_unprepare(mqs_priv->ipg);
+               return ret;
+       }
 
        if (mqs_priv->use_gpr)
                regmap_write(mqs_priv->regmap, IOMUXC_GPR2,
@@ -292,11 +300,8 @@ static int fsl_mqs_runtime_suspend(struct device *dev)
                regmap_read(mqs_priv->regmap, REG_MQS_CTRL,
                            &mqs_priv->reg_mqs_ctrl);
 
-       if (mqs_priv->mclk)
-               clk_disable_unprepare(mqs_priv->mclk);
-
-       if (mqs_priv->ipg)
-               clk_disable_unprepare(mqs_priv->ipg);
+       clk_disable_unprepare(mqs_priv->mclk);
+       clk_disable_unprepare(mqs_priv->ipg);
 
        return 0;
 }
-- 
2.21.0