tree 8807533cccbd92a61fbb49640c47ef7e7f368363
parent b714a7106ba5423c418c25e6231116560f8a9ef8
author Dan Carpenter <dan.carpenter@oracle.com> 1363328062 +0300
committer Takashi Iwai <tiwai@suse.de> 1363329920 +0100

sound: sequencer: cap array index in seq_chn_common_event()

"chn" here is a number between 0 and 255, but ->chn_info[] only has
16 elements so there is a potential write beyond the end of the
array.

If the seq_mode isn't SEQ_2 then we let the individual drivers
(either opl3.c or midi_synth.c) handle it.  Those functions all
do a bounds check on "chn" so I haven't changed anything here.
The opl3.c driver has up to 18 channels and not 16.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>