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USB: UHCI: Use ACCESS_ONCE rather than using a full compiler barrier
authorAlan Stern <stern@rowland.harvard.edu>
Wed, 18 May 2011 08:44:50 +0000 (10:44 +0200)
committerGreg Kroah-Hartman <gregkh@suse.de>
Thu, 19 May 2011 23:43:19 +0000 (16:43 -0700)
This patch (as1462) updates the special accessor functions defined in
uhci-hcd.h.  Rather than using a full compiler barrier, all we really
need is the ACCESS_ONCE() mechanism, because the idea is to force the
compiler to store a fixed copy of a possibly changing value.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/usb/host/uhci-hcd.h patch | blob | history

diff --cc drivers/usb/host/uhci-hcd.h
Simple merge
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