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| author | Ioan-Adrian Ratiu <adi@adirat.com> | 2017-01-05 01:37:47 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2017-01-05 09:35:17 +0300 |
| commit | 13a6c8328e6056932dc680e447d4c5e8ad9add17 (patch) | |
| tree | 1678baeaa0a21ef8ecc188c84533276165fb82bd /tools/perf/util/scripting-engines/trace-event-python.c | |
| parent | 1d0f953086f090a022f2c0e1448300c15372db46 (diff) | |
| download | linux-13a6c8328e6056932dc680e447d4c5e8ad9add17.tar.xz | |
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>
Diffstat (limited to 'tools/perf/util/scripting-engines/trace-event-python.c')
0 files changed, 0 insertions, 0 deletions