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| author | Oliver Neukum <oliver@neukum.org> | 2007-04-20 20:50:48 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-27 13:28:42 -0700 |
| commit | 527660a819f513edc52fea6bcb4068ce1d4d966b (patch) | |
| tree | df4bd3fe6a5d9819a31f7ad50c98f852a9032789 | |
| parent | 1b101ceb9162086035ce0c9cbe83ca7b4845179a (diff) | |
| download | linux-527660a819f513edc52fea6bcb4068ce1d4d966b.tar.gz linux-527660a819f513edc52fea6bcb4068ce1d4d966b.tar.bz2 linux-527660a819f513edc52fea6bcb4068ce1d4d966b.zip | |
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>
| -rw-r--r-- | drivers/usb/core/devio.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c index e023f3d56248..927a181120a9 100644 --- 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: |