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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;
}
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