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From: Shengjiu Wang <shengjiu.wang@freescale.com>
To: alsa-devel@alsa-project.org
Subject: Issue in alsa when dma complete race with pcm release
Date: Fri, 3 Jul 2015 16:25:31 +0800	[thread overview]
Message-ID: <20150703082530.GA21580@shlinux2> (raw)

Hi alsa-devel

   There maybe a issue in ALSA when dma complete race with snd_pcm_release.
The pcm release and dma complete are in different thread. There is occasion
that dmaengine_pcm_dma_complete() is called too late, some memory has been
freed, the prtd is null. Then there is kernel dump.

   Is there any solution for this issue? Thanks.

Best regards
wang shengjiu

             reply	other threads:[~2015-07-03  9:34 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-03  8:25 Shengjiu Wang [this message]
2015-07-03 10:56 ` Issue in alsa when dma complete race with pcm release Lars-Peter Clausen
2015-07-06  9:01   ` Shengjiu Wang
2015-07-06 12:27     ` Lars-Peter Clausen
2015-07-07 10:13       ` Shengjiu Wang
2015-07-07 13:32         ` Lars-Peter Clausen
2015-07-15  1:37           ` Shengjiu Wang
2015-07-15  7:13             ` Lars-Peter Clausen
2015-07-15  7:00               ` Shengjiu Wang
2015-07-15  8:59                 ` Lars-Peter Clausen

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