From: Gwendal Grignou <gwendal@google.com>
Date: Tue, 31 Aug 2010 23:20:36 +0000 (-0700)
Subject: libata-sff: Reenable Port Multiplier after libata-sff remodeling.
X-Git-Tag: v2.6.36-rc4~22^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea3c64506ea7965f86f030155e6fdef381de10e2;p=pandora-kernel.git

libata-sff: Reenable Port Multiplier after libata-sff remodeling.

Keep track of the link on the which the current request is in progress.
It allows support of links behind port multiplier.

Not all libata-sff is PMP compliant. Code for native BMDMA controller
does not take in accound PMP.

Tested on Marvell 7042 and Sil7526.

Signed-off-by: Gwendal Grignou <gwendal@google.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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