From: Zhang Rui <rui.zhang@intel.com>
Date: Fri, 4 Jul 2008 05:32:17 +0000 (+0800)
Subject: AHCI: speed up resume
X-Git-Tag: v2.6.27-rc1~1076^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=24920c8a6358bf5532f1336b990b1c0fe2b599ee;p=pandora-kernel.git

AHCI: speed up resume

During resume, sleep 1 second to wait for the HBA reset
to finish is a waste of time.

According to the AHCI 1.2 spec,
We should poll the HOST_CTL register,
and return error if the host reset is not
finished within 1 second.

Test results show that the HBA reset can be done quickly(in usecs).
And this patch may save nearly 1 second during resume.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---

Reading git-diff-tree failed