sysfs: fix condition check in sysfs_drop_dentry()

The condition check doesn't make much sense as it basically always
succeeds.  This causes NULL dereferencing on certain cases.  It seems
that parentheses are put in the wrong place.  Fix it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 082e2d430e93..38bbe071cc15 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -252,7 +252,7 @@ void sysfs_drop_dentry(struct sysfs_dirent * sd, struct dentry * parent)
         if (dentry) {
                 spin_lock(&dcache_lock);
                 spin_lock(&dentry->d_lock);
-                if (!(d_unhashed(dentry) && dentry->d_inode)) {
+                if (!d_unhashed(dentry) && dentry->d_inode) {
                         inode = dentry->d_inode;
                         spin_lock(&inode->i_lock);
                         __iget(inode);