commit 527660a819f513edc52fea6bcb4068ce1d4d966b
author Oliver Neukum <oliver@neukum.org> Fri Apr 20 20:50:48 2007 +0200
committer Greg Kroah-Hartman <gregkh@suse.de> Fri Apr 27 13:28:42 2007 -0700
tree df4bd3fe6a5d9819a31f7ad50c98f852a9032789
parent 1b101ceb9162086035ce0c9cbe83ca7b4845179a

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>

drivers/usb/core/devio.c

diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
index e023f3d..927a181 100644
--- a/drivers/usb/core/devio.c
+++ b/drivers/usb/core/devio.c
@@ -580,7 +580,7 @@
 	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: