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ALSA: rawmidi - Add open check in rawmidi callbacks
authorTakashi Iwai <tiwai@suse.de>
Mon, 3 Nov 2008 07:17:05 +0000 (08:17 +0100)
committerTakashi Iwai <tiwai@suse.de>
Mon, 3 Nov 2008 07:57:12 +0000 (08:57 +0100)
commit219df32faec97349516c29f33008fea59a46e99a
tree36dcaeaa04b23c35e6abbec1b219618b9e459dbbtree | snapshot (tar.gz zip)
parent8cd2b264d92bb949ddccfb6db6a82254bb07af75commit | diff
ALSA: rawmidi - Add open check in rawmidi callbacks

The drivers (e.g. mtpav) may call rawmidi functions in irq handlers
even though the streams are not opened.  This results in Oops or panic.

This patch adds the rawmidi state check before actually operating the
rawmidi buffers.

Tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/core/rawmidi.c diff | blob | blame | history