ASoC: Intel: sof-rt5682: add a check for devm_clk_get

sof_audio_probe misses a check for devm_clk_get and may cause problems.
Add a check for it to fix the bug.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20191017025044.31474-1-hslester96@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/sof_rt5682.c b/sound/soc/intel/boards/sof_rt5682.c
index 5ce643d62faf22917c797274765bd2562f8c5a83..4f6e58c3954a220fd0050c5d8c29089c0ee16622 100644 (file)
--- a/sound/soc/intel/boards/sof_rt5682.c
+++ b/sound/soc/intel/boards/sof_rt5682.c
@@ -603,6 +603,15 @@ static int sof_audio_probe(struct platform_device *pdev)
        /* need to get main clock from pmc */
        if (sof_rt5682_quirk & SOF_RT5682_MCLK_BYTCHT_EN) {
                ctx->mclk = devm_clk_get(&pdev->dev, "pmc_plt_clk_3");
+               if (IS_ERR(ctx->mclk)) {
+                       ret = PTR_ERR(ctx->mclk);
+
+                       dev_err(&pdev->dev,
+                               "Failed to get MCLK from pmc_plt_clk_3: %d\n",
+                               ret);
+                       return ret;
+               }
+
                ret = clk_prepare_enable(ctx->mclk);
                if (ret < 0) {
                        dev_err(&pdev->dev,