• Takashi Iwai's avatar
    ALSA: usb-audio: Limit retrying sample rate reads · 57dd5414
    Takashi Iwai authored
    There are many USB audio devices with buggy firmware that don't react
    with the sample rate reading properly.  This often results in the
    flood of error messages and slowing down the operation.
    
    The sample rate read back is basically only for confirming the sample
    rate setup, and it's not critically important.  As a compromise, in
    this patch, we stop the sample rate read back once when the device
    gives errors more than tolerance (twice, as of now).  This should
    improve most of error cases while we still can catch the firmware
    bugginess.
    Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
    57dd5414
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