1 files changed, 3 insertions, 0 deletions

diff --git a/arch/x86/pci/i386.c b/arch/x86/pci/i386.c
index 5ead808dd70c..f234a37bd428 100644
--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -319,6 +319,9 @@ int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
                         return -EINVAL;
                 }
                 flags = new_flags;
+                vma->vm_page_prot = __pgprot(
+                        (pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK) |
+                        flags);
         }
 
         if (((vma->vm_pgoff < max_low_pfn_mapped) ||