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-rw-r--r--drivers/infiniband/hw/ipath/ipath_file_ops.c13
1 files changed, 4 insertions, 9 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_file_ops.c b/drivers/infiniband/hw/ipath/ipath_file_ops.c
index 0b6e7679eef..e999a46bef9 100644
--- a/drivers/infiniband/hw/ipath/ipath_file_ops.c
+++ b/drivers/infiniband/hw/ipath/ipath_file_ops.c
@@ -992,15 +992,10 @@ static int mmap_piobufs(struct vm_area_struct *vma,
pgprot_val(vma->vm_page_prot) &= ~_PAGE_GUARDED;
#endif
- if (vma->vm_flags & VM_READ) {
- dev_info(&dd->pcidev->dev,
- "Can't map piobufs as readable (flags=%lx)\n",
- vma->vm_flags);
- ret = -EPERM;
- goto bail;
- }
-
- /* don't allow them to later change to readable with mprotect */
+ /*
+ * don't allow them to later change to readable with mprotect (for when
+ * not initially mapped readable, as is normally the case)
+ */
vma->vm_flags &= ~VM_MAYREAD;
vma->vm_flags |= VM_DONTCOPY | VM_DONTEXPAND;