From: Marcel Apfelbaum <marcel.a@redhat.com>
Date: Thu, 15 May 2014 18:42:49 +0000 (-0600)
Subject: PCI: shpchp: Check bridge's secondary (not primary) bus speed
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~164^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=93fa9d32670f5592c8e56abc9928fc194e1e72fc;p=pandora-kernel.git

PCI: shpchp: Check bridge's secondary (not primary) bus speed

When a new device is added below a hotplug bridge, the bridge's secondary
bus speed and the device's bus speed must match.  The shpchp driver
previously checked the bridge's *primary* bus speed, not the secondary bus
speed.

This caused hot-add errors like:

  shpchp 0000:00:03.0: Speed of bus ff and adapter 0 mismatch

Check the secondary bus speed instead.

[bhelgaas: changelog]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=75251
Fixes: 3749c51ac6c1 ("PCI: Make current and maximum bus speeds part of the PCI core")
Signed-off-by: Marcel Apfelbaum <marcel.a@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
CC: stable@vger.kernel.org	# v2.6.34+
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