linux-kernel - [PATCH 1/4] Fix pci_claim

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Message-Id: <1245270816-11755-2-git-send-email-willy@linux.intel.com>
Date:	Wed, 17 Jun 2009 16:33:33 -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 1/4] Fix pci_claim_resource

Instead of starting from the iomem or ioport roots, start from the
parent bus' resources.  This fixes a bug where child resources would
appear above their parents resources if they had the same size.

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

diff --git a/drivers/pci/setup-res.c b/drivers/pci/setup-res.c
index 3039fcb..1240351 100644
--- a/drivers/pci/setup-res.c
+++ b/drivers/pci/setup-res.c
@@ -99,11 +99,11 @@ void pci_update_resource(struct pci_dev *dev, int resno)
 int pci_claim_resource(struct pci_dev *dev, int resource)
 {
 	struct resource *res = &dev->resource[resource];
-	struct resource *root = NULL;
+	struct resource *root;
 	char *dtype = resource < PCI_BRIDGE_RESOURCES ? "device" : "bridge";
 	int err;
 
-	root = pcibios_select_root(dev, res);
+	root = pci_find_parent_resource(dev, res);
 
 	err = -EINVAL;
 	if (root != NULL)
-- 
1.6.3.1

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