Merge commit 'v2.6.28-rc4' into x86/apic

1 files changed, 9 insertions, 1 deletions

diff --git a/arch/sparc64/kernel/pci.c b/arch/sparc64/kernel/pci.c
index 242ac1ccae7d..bdb7c0a6d83d 100644
--- a/arch/sparc64/kernel/pci.c
+++ b/arch/sparc64/kernel/pci.c
@@ -889,6 +889,7 @@ static int __pci_mmap_make_offset(struct pci_dev *pdev,
 
         for (i = 0; i <= PCI_ROM_RESOURCE; i++) {
                 struct resource *rp = &pdev->resource[i];
+                resource_size_t aligned_end;
 
                 /* Active? */
                 if (!rp->flags)
@@ -906,8 +907,15 @@ static int __pci_mmap_make_offset(struct pci_dev *pdev,
                                 continue;
                 }
 
+                /* Align the resource end to the next page address.
+                 * PAGE_SIZE intentionally added instead of (PAGE_SIZE - 1),
+                 * because actually we need the address of the next byte
+                 * after rp->end.
+                 */
+                aligned_end = (rp->end + PAGE_SIZE) & PAGE_MASK;
+
                 if ((rp->start <= user_paddr) &&
-                    (user_paddr + user_size) <= (rp->end + 1UL))
+                    (user_paddr + user_size) <= aligned_end)
                         break;
         }