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(parent: 08bd71a) | patch
ARM: dma-mapping: avoid speculative prefetching fix
authorGrazvydas Ignotas <notasas@gmail.com>
Tue, 30 Jun 2015 22:38:10 +0000 (01:38 +0300)
committerGrazvydas Ignotas <notasas@gmail.com>
Fri, 3 Jul 2015 22:19:04 +0000 (01:19 +0300)
commit8f3b5e57de448bfd744a174b6611ce38bf52c776
tree430d6a196e5e8f0ba58e51706693c07fabae5dc8tree | snapshot
parent08bd71afb74edbf7b9308328aca50f7018e6edcacommit | diff
ARM: dma-mapping: avoid speculative prefetching fix

This partially reverts 2ffe2da3e71652d4f4cae19539b5c78c2a239136.

Cortex-A8 doesn't seem to be doing any speculative data prefetching,
there is no mention of this in the manual (unlike as for A9), only
instruction prefetch is mentioned. For us this fix is only causing
useless performance penalty, avoid it. The 2.6.27 kernel we used before
didn't have this fix and all seemed to be fine.
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