Merge branch 'for-linus' into for-next

... for migrating the core changes for USB-audio disconnection fixes

1 files changed, 5 insertions, 0 deletions

diff --git a/sound/core/control.c b/sound/core/control.c
index 7e86a5b9f3b5..8c7c2c9bba61 100644
--- a/sound/core/control.c
+++ b/sound/core/control.c
@@ -86,6 +86,7 @@ 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:
@@ -93,6 +94,8 @@ 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;
 }
 
@@ -1434,6 +1437,8 @@ 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);