Don't read from free'd memory. Also make use of the return
value, and don't register the device if something went wrong
creating the port.
Coverity #955
Signed-off-by: Dave Jones <[email protected]>
--- linux-2.6/sound/drivers/opl3/opl3_oss.c~ 2006-03-06 03:59:35.000000000 -0500
+++ linux-2.6/sound/drivers/opl3/opl3_oss.c 2006-03-06 04:03:44.000000000 -0500
@@ -104,8 +104,10 @@ static int snd_opl3_oss_create_port(stru
voices, voices,
name);
if (opl3->oss_chset->port < 0) {
+ int port;
+ port = opl3->oss_chset->port;
snd_midi_channel_free_set(opl3->oss_chset);
- return opl3->oss_chset->port;
+ return port;
}
return 0;
}
@@ -136,10 +138,10 @@ void snd_opl3_init_seq_oss(struct snd_op
arg->oper = oss_callback;
arg->private_data = opl3;
- snd_opl3_oss_create_port(opl3);
-
- /* register to OSS synth table */
- snd_device_register(opl3->card, dev);
+ if (snd_opl3_oss_create_port(opl3)) {
+ /* register to OSS synth table */
+ snd_device_register(opl3->card, dev);
+ }
}
/* unregister */
--
http://www.codemonkey.org.uk
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