ALSA: msnd: check request_region() return value
request_region() may fail, if so return -EBUSY.
Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/isa/msnd/msnd_pinnacle.c b/sound/isa/msnd/msnd_pinnacle.c
index 60b6abd..5f3e684 100644
--- a/sound/isa/msnd/msnd_pinnacle.c
+++ b/sound/isa/msnd/msnd_pinnacle.c
@@ -549,7 +549,10 @@
printk(KERN_ERR LOGNAME ": Couldn't grab IRQ %d\n", chip->irq);
return err;
}
- request_region(chip->io, DSP_NUMIO, card->shortname);
+ if (request_region(chip->io, DSP_NUMIO, card->shortname) == NULL) {
+ free_irq(chip->irq, chip);
+ return -EBUSY;
+ }
if (!request_mem_region(chip->base, BUFFSIZE, card->shortname)) {
printk(KERN_ERR LOGNAME