From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Tue, 25 Aug 2015 13:59:15 +0000 (+0100)
Subject: ARM: mm: improve do_ldrd_abort macro
X-Git-Tag: omap-for-v4.3/fixes-rc1~102^2~1^5~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=08446b129bbde34665c423d882f857a45b8c3aed;p=pandora-kernel.git

ARM: mm: improve do_ldrd_abort macro

Improve the do_ldrd_abort macro code - firstly, it inefficiently checks
for the LDRD encoding by doing a multi-stage test of various bits.  This
can be simplified by generating a mask, bitmasking the instruction and
then comparing the result.

Secondly, we want to be able to test the result rather than branching
to do_DataAbort, so remove the branch at the end and rename the macro
to 'teq_ldrd' to reflect it's new usage.  teq_ldrd macro returns 'eq'
if the instruction was a LDRD.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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