error : file descriptor is in bad state

[pramod gurav <pramod_gurav_etc@xxxxxxxxxxx>]

hi list
I am a newbie to alsa and i using ALSA api to route audio data to playback interface.
But when i try to writei() to interface . i get the error
    error : in writei : file descriptor is in bad state
what might be the reason?
Can anyone help me?
pls...
Am i required to give the details of my application?

Thanks in advance...
Pramod

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