From: Stefan Richter <stefanr@s5r6.in-berlin.de>
Date: Sun, 1 May 2011 19:06:42 +0000 (+0200)
Subject: firewire: sbp2: octlet AT payloads can be stack-allocated
X-Git-Tag: v3.0-rc1~368^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=81bf52d8622f05cfe89893fd5c1101efd85f855b;p=pandora-kernel.git

firewire: sbp2: octlet AT payloads can be stack-allocated

We do not need slab allocations for ORB pointer write transactions
anymore in order to satisfy streaming DMA mapping constraints, thanks to
commit da28947e7e36 "firewire: ohci: avoid separate DMA mapping for
small AT payloads".

(Besides, the slab-allocated buffers that firewire-sbp2 used to provide
for 8-byte write requests were still not fully portable since they
shared a cacheline with unrelated CPU-accessed data.)

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
---

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