From: Tejun Heo <htejun@gmail.com>
Date: Thu, 6 Mar 2008 04:12:54 +0000 (+0900)
Subject: libata-sff: handle controllers w/o ctl register
X-Git-Tag: v2.6.25-rc6~44^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f659f0e4480bb82e6dcf3db8ba1e8485444084e5;p=pandora-kernel.git

libata-sff: handle controllers w/o ctl register

SFF incorrectly assumed that ctl register is available for all
controllers while some old SFF controllers don't have ctl register.
Make SFF handle controllers w/o ctl register by conditionalizing ctl
register access and softreset method.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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