From: Emil Goode <emilgoode@gmail.com>
Date: Sat, 5 Jul 2014 23:23:58 +0000 (+0200)
Subject: MIPS: Remove incorrect NULL check in local_flush_tlb_page()
X-Git-Tag: cleanup-for-v3.18~94^2~73
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e5cd534a3125af4aaa2feb7de9f7700d0a8e91d1;p=pandora-kernel.git

MIPS: Remove incorrect NULL check in local_flush_tlb_page()

We check that the struct vm_area_struct pointer vma is NULL and then
dereference it a few lines below. The intent was to make sure vma is
not NULL but this is not necessary since the bug pre-dates GIT history
and seem to never have caused a problem. The tlb-4k and tlb-8k versions
of local_flush_tlb_page() don't bother checking if vma is NULL, also
vma is dereferenced before being passed to local_flush_tlb_page(),
thus it is safe to remove this NULL check.

Signed-off-by: Emil Goode <emilgoode@gmail.com>
Reviewed-by: Jonas Gorski <jogo@openwrt.org>
Acked-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: John Crispin <blogic@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: kernel-janitors@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7264/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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