From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Sun, 11 Jun 2006 14:25:43 +0000 (+0900)
Subject: [MIPS] Fix futex_atomic_op_inuser.
X-Git-Tag: v2.6.18-rc1~1109^2~43
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0307e8d024dffc00743fb54b9afa920a346f1adb;p=pandora-kernel.git

[MIPS] Fix futex_atomic_op_inuser.

I found that NPTL's pthread_cond_signal() does not work properly on
kernels compiled by gcc 4.1.x.  I suppose inline asm for
__futex_atomic_op() was wrong.  I suppose:

1. "=&r" constraint should be used for oldval.
2. Instead of "r" (uaddr), "=R" (*uaddr) for output and "R" (*uaddr)
   for input should be used.
3. "memory" should be added to the clobber list.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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