1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 388440e0d222..d5cdccf27a69 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -620,6 +620,9 @@ pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
         vma->vm_pgoff += start >> PAGE_SHIFT;
         mmap_type = res->flags & IORESOURCE_MEM ? pci_mmap_mem : pci_mmap_io;
 
+        if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(start))
+                return -EINVAL;
+
         return pci_mmap_page_range(pdev, vma, mmap_type, write_combine);
 }