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Commit 527660a8 authored by Oliver Neukum's avatar Oliver Neukum Committed by Greg Kroah-Hartman
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usbfs micro optimitation 



the memory barrier is needed only with smp.

Signed-off-by: default avatarOliver Neukum <oneukum@suse.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 1b101ceb

drivers/usb/core/devio.c

+1 −1
Original line number Diff line number Diff line
@@ -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: