Ioan-Adrian Ratiu 13a6c8328e ALSA: usb-audio: test EP_FLAG_RUNNING at urb completion ...

Testing EP_FLAG_RUNNING in snd_complete_urb() before running the completion
logic allows us to save a few cpu cycles by returning early, skipping the
pending urb in case the stream was stopped; the stop logic handles the urb
and sets the completion callbacks to NULL.

Signed-off-by: Ioan-Adrian Ratiu <adi@adirat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2017-01-05 07:35:17 +01:00

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