From: Tejun Heo <htejun@gmail.com>
Date: Thu, 2 Nov 2006 03:17:23 +0000 (+0900)
Subject: [PATCH] ahci: preserve PORTS_IMPL over host resets
X-Git-Tag: v2.6.20-rc1~34^2~40^2~9^2~57
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=98fa4b60c673526fdd478d9719e41cd9e2b84986;p=pandora-kernel.git

[PATCH] ahci: preserve PORTS_IMPL over host resets

Instead of writing 0xf blindly, preserve the content of write-once
PORTS_IMPL register over host resets.

This patch is taken from Jeff Garzik's AHCI init update patch.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
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