ALSA: usb-audio: Simplify PCM open/close callbacks

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The stream direction in open and close callbacks can be retrieved from
substream->direction, hence we don't have to stick with the unique PCM
ops hard-coded for each direction.  Rewrite the common open/close
callback functions.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

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Takashi Iwai 2018-05-27 13:59:03 +02:00

parent 9f88058e78

commit 6fddc79787

1 changed files with 8 additions and 26 deletions

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sound/usb/pcm.c

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