From: Timur Tabi <timur@freescale.com>
To: Liam Girdwood <lrg@slimlogic.co.uk>,
Mark Brown <broonie@opensource.wolfsonmicro.com>,
ALSA development <alsa-devel@alsa-project.org>
Subject: asoc: fsl_dma_hw_free being called twice at end of playback
Date: Mon, 03 May 2010 15:51:04 -0500 [thread overview]
Message-ID: <4BDF3738.3070900@freescale.com> (raw)
In my 8610 ASoC driver, I'm seeing the DMA driver's .hw_free function being
called twice whenever playback ends. I've added some printk's to demonstrate:
snd_pcm_common_ioctl1:2543
snd_pcm_hw_free:543
soc_pcm_hw_free:761 c023983c
fsl_dma_hw_free:720 substream=df029d00 dma_private=df440000 stream=0
snd_pcm_release_substream:2022
soc_pcm_hw_free:761 c023983c
fsl_dma_hw_free:720 substream=df029d00 dma_private=df440000 stream=0
fsl_dma_close:759 substream=df029d00 dma_private=df440000
So the ioctl is being called only once, but the both snd_pcm_hw_free() and
snd_pcm_release_substream() are calling the .hw_free function.
Is this normal? I don't know how to handle this, other than to add some
boolean to my private data structure that indicates whether the resources
have been freed or not.
--
Timur Tabi
Linux kernel developer at Freescale
next reply other threads:[~2010-05-03 20:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-03 20:51 Timur Tabi [this message]
2010-05-03 21:02 ` asoc: fsl_dma_hw_free being called twice at end of playback Mark Brown
2010-05-03 21:05 ` Timur Tabi
2010-05-03 23:57 ` Raymond Yau
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