[alsa-devel] Input/output error while playing a file using aplay

Hi

I am testing my audio driver using aplay. I trying to play an audio file using:

#aplay -Dplughw:0,0 --rate=44100 --format=S16 --channels=2 test.wav The log is as follows,

snd_card_omap_alsa_open start snd_card_omap_alsa_open end Playing WAVE 'test.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo snd_omap_alsa_hw_params start snd_omap_alsa_prepare start snd_omap_alsa_prepare end snd_omap_alsa_trigger start audio_start_dma_chain start audio_start_dma_chain end omap_start_alsa_sound_dma end snd_omap_alsa_trigger end snd_omap_alsa_pointer start audio_get_dma_pos start audio_get_dma_pos end

It waits here for sometime and then I get snd_omap_alsa_trigger starte error: Input/output error

Then the things are wound up as:

audio_stop_dma start omap_stop_alsa_sound_dma start omap_stop_alsa_sound_dma end omap_clear_alsa_sound_dma start omap_clear_alsa_sound_dma end snd_omap_alsa_trigger end

snd_omap_alsa_hw_free start snd_omap_alsa_hw_free end snd_card_omap_alsa_close start snd_card_omap_alsa_close end

So basically the problem is in trigger where it waits for something and then winds up things. Any idea, what could be the reason. I am thinking it has to do something with DMA interrupts etc.