X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=sound%2Fcore%2Fcontrol.c;h=6128f69c1af2ebe22b5918d31e6bdfe3c0a612a9;hb=60cbc8c9108be5542b8b7b9e16231fdee062f6d9;hp=e9e79ecb0eaa6eae846362dc047558aff24b7e23;hpb=655402d41742cc8e490f4357745408d361bdd2d4;p=kernel%2Flinux-3.0.git

diff --git a/sound/core/control.c b/sound/core/control.c
index e9e79ec..6128f69 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -85,6 +85,7 @@ static int snd_ctl_open(struct inode *inode, struct file *file)
 	write_lock_irqsave(&card->ctl_files_rwlock, flags);
 	list_add_tail(&ctl->list, &card->ctl_files);
 	write_unlock_irqrestore(&card->ctl_files_rwlock, flags);
+	snd_card_unref(card);
 	return 0;
 
       __error:
@@ -92,6 +93,8 @@ static int snd_ctl_open(struct inode *inode, struct file *file)
       __error2:
 	snd_card_file_remove(card, file);
       __error1:
+	if (card)
+		snd_card_unref(card);
       	return err;
 }
 
@@ -1362,6 +1365,8 @@ static ssize_t snd_ctl_read(struct file *file, char __user *buffer,
 			spin_unlock_irq(&ctl->read_lock);
 			schedule();
 			remove_wait_queue(&ctl->change_sleep, &wait);
+			if (ctl->card->shutdown)
+				return -ENODEV;
 			if (signal_pending(current))
 				return -ERESTARTSYS;
 			spin_lock_irq(&ctl->read_lock);