From: Huacai Chen <chenhc@lemote.com>
Date: Mon, 11 Aug 2014 09:10:38 +0000 (+0800)
Subject: MIPS: Loongson: Fix COP2 usage for preemptible kernel
X-Git-Tag: fixes-for-v3.18-merge-window~106^2~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7ff1740fa48c277628181a047177e0a53f09f682;p=pandora-kernel.git

MIPS: Loongson: Fix COP2 usage for preemptible kernel

In preemptible kernel, only TIF_USEDFPU flag is reliable to distinguish
whether _init_fpu()/_restore_fp() is needed. Because the value of the
CP0_Status.CU1 isn't changed during preemption.

V2: Fix coding style.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/7515/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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