[alsa-devel] timer + snd_pcm_period_elapsed

Jaroslav Kysela perex at perex.cz
Thu Jun 5 15:14:45 CEST 2008

On Thu, 5 Jun 2008, Harsha priya gupta wrote:

> Hi,
> In my driver, i see that first my copy function is called some 4 times. Then
> my timer starts (when trigger->start is reached). In my timer function,
> snd_pcm_period_elapsed is called after the period is considered to be
> processed by hardware. Everytime the period_elapsed function is called,
> inturn my pointer function is called but i get the following error. can
> anyone help as to what i am missing to do?
> aplay: pcm_write:1266: write error: Input/output error
> Can anyone hint me what i am doing wrong?

The pointer function probably returns invalid value.


Jaroslav Kysela <perex at perex.cz>
Linux Kernel Sound Maintainer
ALSA Project, Red Hat, Inc.

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