openwrt-xburst/target/linux/ar71xx/patches-3.6/148-MIPS-avoid-possible-resource-conflict-in-register_pc.patch

From a018b28d3953a32008de839d997a992a724ae314 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Sun, 24 Jun 2012 17:40:45 +0200
Subject: [PATCH 09/34] MIPS: avoid possible resource conflict in register_pci_controller

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
---
 arch/mips/pci/pci.c |   15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)

--- a/arch/mips/pci/pci.c
+++ b/arch/mips/pci/pci.c
@@ -176,9 +176,20 @@ static DEFINE_MUTEX(pci_scan_mutex);
 
 void __devinit register_pci_controller(struct pci_controller *hose)
 {
-	if (request_resource(&iomem_resource, hose->mem_resource) < 0)
+	struct resource *parent;
+
+	parent = hose->mem_resource->parent;
+	if (!parent)
+		parent = &iomem_resource;
+
+	if (request_resource(parent, hose->mem_resource) < 0)
 		goto out;
-	if (request_resource(&ioport_resource, hose->io_resource) < 0) {
+
+	parent = hose->io_resource->parent;
+	if (!parent)
+		parent = &ioport_resource;
+
+	if (request_resource(parent, hose->io_resource) < 0) {
 		release_resource(hose->mem_resource);
 		goto out;
 	}