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-rw-r--r--drivers/pci/pci-sysfs.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index e982010f0ed1..cbb13be1ba28 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -1008,6 +1008,9 @@ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
if (i >= PCI_ROM_RESOURCE)
return -ENODEV;
+ if (res->flags & IORESOURCE_MEM && iomem_is_exclusive(res->start))
+ return -EINVAL;
+
if (!pci_mmap_fits(pdev, i, vma, PCI_MMAP_SYSFS)) {
WARN(1, "process \"%s\" tried to map 0x%08lx bytes at page 0x%08lx on %s BAR %d (start 0x%16Lx, size 0x%16Lx)\n",
current->comm, vma->vm_end-vma->vm_start, vma->vm_pgoff,
@@ -1024,10 +1027,6 @@ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr,
pci_resource_to_user(pdev, i, res, &start, &end);
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);
}