From: Jeremy Fitzhardinge <jeremy@goop.org>
Date: Mon, 2 Apr 2012 23:15:33 +0000 (-0700)
Subject: x86: Use correct byte-sized register constraint in __xchg_op()
X-Git-Tag: v3.4-rc3~30^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2ca052a3710fac208eee690faefdeb8bbd4586a1;p=pandora-kernel.git

x86: Use correct byte-sized register constraint in __xchg_op()

x86-64 can access the low half of any register, but i386 can only do
it with a subset of registers.  'r' causes compilation failures on i386,
but 'q' expresses the constraint properly.

Signed-off-by: Jeremy Fitzhardinge <jeremy@goop.org>
Link: http://lkml.kernel.org/r/4F7A3315.501@goop.org
Reported-by: Leigh Scott <leigh123linux@googlemail.com>
Tested-by: Thomas Reitmayr <treitmayr@devbase.at>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@vger.kernel.org> v3.3
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