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authorTakashi Iwai <tiwai@suse.de>2018-09-13 08:20:43 +0200
committerTakashi Iwai <tiwai@suse.de>2018-10-04 20:13:17 +0200
commit6aea5702e27ebc85747d6e4943a0c378e1752be0 (patch)
treec14ccb05935b7390997e8f4c74a5f4d4b2ab3617 /sound/core/seq
parentcd3b7116b57527f659b96ff6988d2de3d448c5b3 (diff)
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 'sound/core/seq')
-rw-r--r--sound/core/seq/seq_virmidi.c4
1 files changed, 1 insertions, 3 deletions
diff --git a/sound/core/seq/seq_virmidi.c b/sound/core/seq/seq_virmidi.c
index cb988efd1ed0..e5a40795914a 100644
--- a/sound/core/seq/seq_virmidi.c
+++ b/sound/core/seq/seq_virmidi.c
@@ -149,9 +149,7 @@ static void snd_vmidi_output_work(struct work_struct *work)
/* discard the outputs in dispatch mode unless subscribed */
if (vmidi->seq_mode == SNDRV_VIRMIDI_SEQ_DISPATCH &&
!(vmidi->rdev->flags & SNDRV_VIRMIDI_SUBSCRIBE)) {
- char buf[32];
- while (snd_rawmidi_transmit(substream, buf, sizeof(buf)) > 0)
- ; /* ignored */
+ snd_rawmidi_proceed(substream);
return;
}