3.2.102-rc1 review patch. If anyone has any objections, please let me know.
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From: Adam Goode agoode@google.com
commit 21fd3e956ee8a307a06bc6e095f5767a00eb2a7e upstream.
snd_seq_event_dup returns -ENOMEM in some buffer-full conditions, but usually returns -EAGAIN. Make -EAGAIN trigger the overflow condition in snd_seq_fifo_event_in so that the fifo is cleared and -ENOSPC is returned to userspace as stated in the alsa-lib docs.
Signed-off-by: Adam Goode agoode@google.com Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Ben Hutchings ben@decadent.org.uk --- sound/core/seq/seq_fifo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/sound/core/seq/seq_fifo.c +++ b/sound/core/seq/seq_fifo.c @@ -127,7 +127,7 @@ int snd_seq_fifo_event_in(struct snd_seq snd_use_lock_use(&f->use_lock); err = snd_seq_event_dup(f->pool, event, &cell, 1, NULL); /* always non-blocking */ if (err < 0) { - if (err == -ENOMEM) + if ((err == -ENOMEM) || (err == -EAGAIN)) atomic_inc(&f->overflow); snd_use_lock_free(&f->use_lock); return err;