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ALSA: seq: correctly detect input buffer overflow
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>
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@ -124,7 +124,7 @@ int snd_seq_fifo_event_in(struct snd_seq_fifo *f,
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snd_use_lock_use(&f->use_lock);
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err = snd_seq_event_dup(f->pool, event, &cell, 1, NULL); /* always non-blocking */
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if (err < 0) {
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if (err == -ENOMEM)
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if ((err == -ENOMEM) || (err == -EAGAIN))
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atomic_inc(&f->overflow);
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snd_use_lock_free(&f->use_lock);
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return err;
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