usbfs micro optimitation

the memory barrier is needed only with smp. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
git-mirror · Apr 27, 2007 · 527660a · 527660a
1 parent 1b101ce
commit 527660a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
@@ -580,7 +580,7 @@ static int usbdev_open(struct inode *inode, struct file *file)
 	ps->disccontext = NULL;
 	ps->ifclaimed = 0;
 	security_task_getsecid(current, &ps->secid);
-	wmb();
+	smp_wmb();
 	list_add_tail(&ps->list, &dev->filelist);
 	file->private_data = ps;
  out: