x86/PCI: Don't try to move IORESOURCE_PCI_FIXED resources

Don't attempt to move resource marked IORESOURCE_PCI_FIXED, even if
pci_claim_resource() fails.  In some cases, these are legacy resources that
cannot be moved.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

1 files changed, 10 insertions, 5 deletions

diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index db6b1ab43255..6db58d68feb5 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -271,11 +271,16 @@ static void pcibios_allocate_dev_resources(struct pci_dev *dev, int pass)
                                         "BAR %d: reserving %pr (d=%d, p=%d)\n",
                                         idx, r, disabled, pass);
                                 if (pci_claim_resource(dev, idx) < 0) {
-                                        /* We'll assign a new address later */
-                                        pcibios_save_fw_addr(dev,
-                                                        idx, r->start);
-                                        r->end -= r->start;
-                                        r->start = 0;
+                                        if (r->flags & IORESOURCE_PCI_FIXED) {
+                                                dev_info(&dev->dev, "BAR %d %pR is immovable\n",
+                                                         idx, r);
+                                        } else {
+                                                /* We'll assign a new address later */
+                                                pcibios_save_fw_addr(dev,
+                                                                idx, r->start);
+                                                r->end -= r->start;
+                                                r->start = 0;
+                                        }
                                 }
                         }
                 }