ASoC: intel: bytcr_rt5640: Replace GFP_ATOMIC with GFP_KERNEL in snd_byt_rt5640_mc_probe

snd_byt_rt5640_mc_probe() is never called in atomic context.
This function is only set as ".probe" in "struct platform_driver".

Despite never getting called from atomic context,
snd_byt_rt5640_mc_probe() calls devm_kzalloc() with GFP_ATOMIC,
which waits busily for allocation.
GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL,
to avoid busy waiting and improve the possibility of sucessful allocation.

This is found by a static analysis tool named DCNS written by myself.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/intel/boards/bytcr_rt5640.c b/sound/soc/intel/boards/bytcr_rt5640.c
index a8d8bff..ad5fcd5 100644 (file)
--- a/sound/soc/intel/boards/bytcr_rt5640.c
+++ b/sound/soc/intel/boards/bytcr_rt5640.c
@@ -744,7 +744,7 @@ static int snd_byt_rt5640_mc_probe(struct platform_device *pdev)
        int i;
 
        is_bytcr = false;
-       priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_ATOMIC);
+       priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
        if (!priv)
                return -ENOMEM;