mn10300/PCI: Clip bridge windows to fit in upstream windows
authorYinghai Lu <yinghai@kernel.org>
Thu, 15 Jan 2015 22:21:50 +0000 (16:21 -0600)
committerBjorn Helgaas <bhelgaas@google.com>
Fri, 16 Jan 2015 16:04:43 +0000 (10:04 -0600)
commit4e348ba2dd1c1d6ea191566d7591655bbe9dde64
tree806ae5f2f4e09f8225663b523a6ba6e607951bae
parent576e4385ff59f52ca0e9a6a953a55f1f76fc196b
mn10300/PCI: Clip bridge windows to fit in upstream windows

Every PCI-PCI bridge window should fit inside an upstream bridge window
because orphaned address space is unreachable from the primary side of the
upstream bridge.  If we inherit invalid bridge windows that overlap an
upstream window from firmware, clip them to fit and update the bridge
accordingly.

[bhelgaas: changelog]
Link: https://bugzilla.kernel.org/show_bug.cgi?id=85491
Reported-by: Marek Kordik <kordikmarek@gmail.com>
Fixes: 5b28541552ef ("PCI: Restrict 64-bit prefetchable bridge windows to 64-bit resources")
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: David Howells <dhowells@redhat.com>
CC: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
CC: linux-am33-list@redhat.com
arch/mn10300/unit-asb2305/pci-asb2305.c
arch/mn10300/unit-asb2305/pci.c