According to sound/soc/samsung/pcm.c, the kernel module may sleep under
a spinlock.
The function call path is:
s3c_pcm_hw_params (acquire the spinlock)
clk_get_rate
clk_core_get_rate
clk_prepare_lock
mutex_lock --> may sleep
I do not find a good way to fix it, so I only report.
This possible bug is found by my static analysis tool (DSAC) and my code
review.
Thanks,
Jia-Ju Bai
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