7425130eb77c868c69365d6b0eb1c5a604
parent f5f2025ef3e2cdb593707cbf87378761f17befbe
author Will Deacon <will.deacon@arm.com> 1344622416 +0100
committer Russell King <rmk+kernel@arm.linux.org.uk> 1344672960 +0100

ARM: 7489/1: errata: fix workaround for erratum #720789 on UP systems

Commit 5a783cbc4836 ("ARM: 7478/1: errata: extend workaround for erratum
 #720789") added workarounds for erratum #720789 to the range TLB
invalidation functions with the observation that the erratum only
affects SMP platforms. However, when running an SMP_ON_UP kernel on a
uniprocessor platform we must take care to preserve the ASID as the
workaround is not required.

This patch ensures that we don't set the ASID to 0 when flushing the TLB
on such a system, preserving the original behaviour with the workaround
disabled.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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