ALSA: rawmidi: A lightweight function to discard pending bytes
For discarding the pending bytes on rawmidi, we process with a loop of
snd_rawmidi_transmit() which is just a waste of CPU power.
Implement a lightweight API function to discard the pending bytes and
the proceed the ring buffer instantly, and use it instead of open
codes.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/include/sound/rawmidi.h b/include/sound/rawmidi.h
index 6665cb2..3b5a061 100644
--- a/include/sound/rawmidi.h
+++ b/include/sound/rawmidi.h
@@ -171,6 +171,7 @@
unsigned char *buffer, int count);
int __snd_rawmidi_transmit_ack(struct snd_rawmidi_substream *substream,
int count);
+int snd_rawmidi_proceed(struct snd_rawmidi_substream *substream);
/* main midi functions */