From: Bjorn Helgaas on

With insert_resource_conflict(), we can learn what the actual conflict is,
so print that info for debugging purposes.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas(a)hp.com>
---

arch/x86/pci/acpi.c | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)


diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 6e22454..75ac3f8 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -122,7 +122,7 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
struct acpi_resource_address64 addr;
acpi_status status;
unsigned long flags;
- struct resource *root;
+ struct resource *root, *conflict;
u64 start, end;

status = resource_to_addr(acpi_res, &addr);
@@ -157,9 +157,12 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
return AE_OK;
}

- if (insert_resource(root, res)) {
+ conflict = insert_resource_conflict(root, res);
+ if (conflict) {
dev_err(&info->bridge->dev,
- "can't allocate host bridge window %pR\n", res);
+ "address space collision: host bridge window %pR "
+ "conflicts with %s %pR\n",
+ res, conflict->name, conflict);
} else {
pci_bus_add_resource(info->bus, res, 0);
info->res_num++;

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