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Date: Tue, 12 Dec 2017 22:27:47 +0800
From: Jia-Ju Bai <baijiaju1990@...il.com>
To: lgirdwood@...il.com, broonie@...nel.org, perex@...ex.cz,
tiwai@...e.com, arnaud.pouliquen@...com, dan.carpenter@...cle.com
Cc: alsa-devel@...a-project.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [BUG] soc/sti: a possible sleep-in-atomic bug in
uni_player_ctl_iec958_put
According to sound/soc/sti/uniperif_player.c, the driver may sleep under
a spinlock.
The function call path is:
uni_player_ctl_iec958_put (acquire the spinlock)
uni_player_set_channel_status
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 checked
by my code review.
Thanks,
Jia-Ju Bai
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