From: Tejun Heo <htejun@gmail.com>
Date: Fri, 2 Feb 2007 07:22:30 +0000 (+0900)
Subject: libata: improve probe failure handling
X-Git-Tag: v2.6.21-rc2~25^2~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ae72a1e469a3bcfd3c1f77dac62392c489bf9ca;p=pandora-kernel.git

libata: improve probe failure handling

* Move forcing device to PIO0 on device disable into
  ata_dev_disable().  This makes both old and new EHs act the same
  way.

* Speed down only PIO mode on probe failure.  All commands used during
  probing are PIO commands.  There's no point in speeding down DMA.

* Retry at least once after -ENODEV.  Some devices report garbled
  IDENTIFY data after certain events.  This shouldn't cause device
  detach and re-attach.

* Rearrange EH failure path for simplicity.

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

Reading git-diff-tree failed