diff options
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/core/inode.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/usb/core/inode.c b/drivers/usb/core/inode.c index e3ab4437ea96..89a0e8366585 100644 --- a/drivers/usb/core/inode.c +++ b/drivers/usb/core/inode.c @@ -344,18 +344,20 @@ static int usbfs_empty (struct dentry *dentry) struct list_head *list; spin_lock(&dcache_lock); - + spin_lock(&dentry->d_lock); list_for_each(list, &dentry->d_subdirs) { struct dentry *de = list_entry(list, struct dentry, d_u.d_child); - spin_lock(&de->d_lock); + + spin_lock_nested(&de->d_lock, DENTRY_D_LOCK_NESTED); if (usbfs_positive(de)) { spin_unlock(&de->d_lock); + spin_unlock(&dentry->d_lock); spin_unlock(&dcache_lock); return 0; } spin_unlock(&de->d_lock); } - + spin_unlock(&dentry->d_lock); spin_unlock(&dcache_lock); return 1; } |