linux-kernel - [PATCH 4/4] ia64: Fix resource assignment for root busses

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Date:	Wed, 17 Jun 2009 16:33:36 -0400
From:	Matthew Wilcox <willy@...ux.intel.com>
To:	torvalds@...ux-foundation.org, jbarnes@...tuousgeek.org
Cc:	andrew.patterson@...com, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Matthew Wilcox <willy@...ux.intel.com>
Subject: [PATCH 4/4] ia64: Fix resource assignment for root busses

ia64 was assigning resources to root busses after allocations had
been made for child busses.  Calling pcibios_setup_root_windows() from
pcibios_fixup_bus() solves this problem by assigning the resources to
the root bus before child busses are scanned.

Signed-off-by: Matthew Wilcox <willy@...ux.intel.com>
Tested-by: Andrew Patterson <andrew.patterson@...com>
---
 arch/ia64/pci/pci.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
index 61f1af5..ae5ee8a 100644
--- a/arch/ia64/pci/pci.c
+++ b/arch/ia64/pci/pci.c
@@ -371,8 +371,6 @@ pci_acpi_scan_root(struct acpi_device *device, int domain, int bus)
 	 * such quirk. So we just ignore the case now.
 	 */
 	pbus = pci_scan_bus_parented(NULL, bus, &pci_root_ops, controller);
-	if (pbus)
-		pcibios_setup_root_windows(pbus, controller);
 
 	return pbus;
 
@@ -490,6 +488,8 @@ pcibios_fixup_bus (struct pci_bus *b)
 	if (b->self) {
 		pci_read_bridge_bases(b);
 		pcibios_fixup_bridge_resources(b->self);
+	} else {
+		pcibios_setup_root_windows(b, b->sysdata);
 	}
 	list_for_each_entry(dev, &b->devices, bus_list)
 		pcibios_fixup_device_resources(dev);
-- 
1.6.3.1

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