From: Alex Smith <alex@alex-smith.me.uk>
Date: Wed, 23 Jul 2014 13:40:06 +0000 (+0100)
Subject: MIPS: ptrace: Avoid smp_processor_id() when retrieving FPU IR
X-Git-Tag: cleanup-for-v3.18~94^2~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=656ff9bef08c19a6471b49528dacb4cbbeb1e537;p=pandora-kernel.git

MIPS: ptrace: Avoid smp_processor_id() when retrieving FPU IR

Whenever ptrace attempts to retrieve the FPU implementation register it
accesses it through current_cpu_data, which calls smp_processor_id().
Since the code may execute with preemption enabled, this can trigger
a warning. Fix this by using boot_cpu_data to get the IR instead.

Signed-off-by: Alex Smith <alex@alex-smith.me.uk>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7449/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

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