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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>
hifive-unleashed-5.1
Jia-Ju Bai 2018-04-09 18:47:37 +08:00 committed by Mark Brown
parent 270e1ad6d1
commit 7a3a63238f
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GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 1 deletions
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2
sound/soc/intel/boards/bytcr_rt5640.c
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@ -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;