USB: UHCI: Use ACCESS_ONCE rather than using a full compiler barrier

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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>

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Alan Stern 2011-05-18 10:44:50 +02:00 • committed by Greg Kroah-Hartman

parent 8452c6745e

commit bab1ff1bda

1 changed files with 2 additions and 12 deletions

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drivers/usb/host/uhci-hcd.h

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