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-rw-r--r--arch/x86/pci/acpi.c22
-rw-r--r--arch/x86/pci/i386.c5
2 files changed, 18 insertions, 9 deletions
diff --git a/arch/x86/pci/acpi.c b/arch/x86/pci/acpi.c
index 6e22454..e311602 100644
--- a/arch/x86/pci/acpi.c
+++ b/arch/x86/pci/acpi.c
@@ -122,8 +122,8 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
struct acpi_resource_address64 addr;
acpi_status status;
unsigned long flags;
- struct resource *root;
- u64 start, end;
+ struct resource *root, *conflict;
+ u64 start, end, max_len;
status = resource_to_addr(acpi_res, &addr);
if (!ACPI_SUCCESS(status))
@@ -140,6 +140,17 @@ setup_resource(struct acpi_resource *acpi_res, void *data)
} else
return AE_OK;
+ max_len = addr.maximum - addr.minimum + 1;
+ if (addr.address_length > max_len) {
+ dev_printk(KERN_DEBUG, &info->bridge->dev,
+ "host bridge window length %#llx doesn't fit in "
+ "%#llx-%#llx, trimming\n",
+ (unsigned long long) addr.address_length,
+ (unsigned long long) addr.minimum,
+ (unsigned long long) addr.maximum);
+ addr.address_length = max_len;
+ }
+
start = addr.minimum + addr.translation_offset;
end = start + addr.address_length - 1;
@@ -157,9 +168,12 @@ 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++;
diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index dece3eb..46fd43f 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -127,9 +127,6 @@ static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
continue;
if (!r->start ||
pci_claim_resource(dev, idx) < 0) {
- dev_info(&dev->dev,
- "can't reserve window %pR\n",
- r);
/*
* Something is wrong with the region.
* Invalidate the resource to prevent
@@ -181,8 +178,6 @@ static void __init pcibios_allocate_resources(int pass)
"BAR %d: reserving %pr (d=%d, p=%d)\n",
idx, r, disabled, pass);
if (pci_claim_resource(dev, idx) < 0) {
- dev_info(&dev->dev,
- "can't reserve %pR\n", r);
/* We'll assign a new address later */
r->end -= r->start;
r->start = 0;
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