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authorTakashi Iwai <tiwai@suse.de>2018-09-13 09:20:43 +0300
committerTakashi Iwai <tiwai@suse.de>2018-10-04 21:13:17 +0300
commit6aea5702e27ebc85747d6e4943a0c378e1752be0 (patch)
treec14ccb05935b7390997e8f4c74a5f4d4b2ab3617 /include/sound/rawmidi.h
parentcd3b7116b57527f659b96ff6988d2de3d448c5b3 (diff)
downloadlinux-6aea5702e27ebc85747d6e4943a0c378e1752be0.tar.xz
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>
Diffstat (limited to 'include/sound/rawmidi.h')
-rw-r--r--include/sound/rawmidi.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/sound/rawmidi.h b/include/sound/rawmidi.h
index 6665cb29e1a2..3b5a061132b6 100644
--- a/include/sound/rawmidi.h
+++ b/include/sound/rawmidi.h
@@ -171,6 +171,7 @@ int __snd_rawmidi_transmit_peek(struct snd_rawmidi_substream *substream,
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 */