From: Mikael Pettersson <mikpe@it.uu.se>
Date: Wed, 31 Oct 2007 12:21:29 +0000 (+0100)
Subject: sata_promise: fix endianess bug in ASIC PRD bug workaround
X-Git-Tag: v2.6.24-rc2~48^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=03116d67e0973bb493fe9307e28973a24a272bcc;p=pandora-kernel.git

sata_promise: fix endianess bug in ASIC PRD bug workaround

The original workaround for the Promise ASIC PRD bug
contained an endianess bug which I failed to detect:
the adjustment of the last PRD entry's length field
applied host arithmetic to little-endian data, which
is incorrect on big-endian machines.

We have the length available in host-endian format, so
do the adjustment on host-endian data and then convert
and store it in the PRD entry's little-endian data field.

Thanks to an anonymous reviewer for detecting this bug.

Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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