From: Will Deacon <will.deacon@arm.com>
Date: Tue, 25 Nov 2014 10:05:35 +0000 (+0000)
Subject: arm64: fix return code check when changing emulation handler
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~18^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=909633957d85561dab7655d69a9d17dd16231d92;p=pandora-kernel.git

arm64: fix return code check when changing emulation handler

update_insn_emulation_mode() returns 0 on success, so we should be
treating any non-zero values as failure, rather than the other way
around. Otherwise, writes to the sysctl file controlling the emulation
are ignored and immediately rolled back.

Reported-by: Gene Hackmann <ghackmann@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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