Commit 0e75182c authored Aug 10, 2007 by Clemens Ladisch Committed by Jaroslav Kysela Oct 16, 2007

[ALSA] seq_midi_event: fix parsing of F9/FD bytes



Check for a valid event type when encoding a system real-time message to
prevent the bytes F9 or FD resulting in an empty sequencer message.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>

parent bf8c1382

sound/core/seq/seq_midi_event.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -252,7 +252,7 @@ int snd_midi_event_encode_byte(struct snd_midi_event *dev, int c,
		ev->type = status_event[ST_SPECIAL + c - 0xf0].event;
		ev->flags &= ~SNDRV_SEQ_EVENT_LENGTH_MASK;
		ev->flags \|= SNDRV_SEQ_EVENT_LENGTH_FIXED;
		return 1;
		return ev->type != SNDRV_SEQ_EVENT_NONE;
		}

		spin_lock_irqsave(&dev->lock, flags);