ASoC: amd: change clk_get() to devm_clk_get() and add missed checks

cz_da7219_init() does not check the return values of clk_get(),
while da7219_clk_enable() calls clk_set_rate() to dereference
the pointers.
Add checks to fix the problems.
Also, change clk_get() to devm_clk_get() to avoid data leak after
failures.

Fixes: bb24a31ed584 ("ASoC: AMD: Configure wclk and bclk of master codec")
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Link: https://lore.kernel.org/r/20201204063610.513556-1-hslester96@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/amd/acp-da7219-max98357a.c b/sound/soc/amd/acp-da7219-max98357a.c
index a7702e6..849288d 100644 (file)
--- a/sound/soc/amd/acp-da7219-max98357a.c
+++ b/sound/soc/amd/acp-da7219-max98357a.c
@@ -73,8 +73,13 @@ static int cz_da7219_init(struct snd_soc_pcm_runtime *rtd)
                return ret;
        }
 
-       da7219_dai_wclk = clk_get(component->dev, "da7219-dai-wclk");
-       da7219_dai_bclk = clk_get(component->dev, "da7219-dai-bclk");
+       da7219_dai_wclk = devm_clk_get(component->dev, "da7219-dai-wclk");
+       if (IS_ERR(da7219_dai_wclk))
+               return PTR_ERR(da7219_dai_wclk);
+
+       da7219_dai_bclk = devm_clk_get(component->dev, "da7219-dai-bclk");
+       if (IS_ERR(da7219_dai_bclk))
+               return PTR_ERR(da7219_dai_bclk);
 
        ret = snd_soc_card_jack_new(card, "Headset Jack",
                                SND_JACK_HEADSET | SND_JACK_LINEOUT |