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authorLinus Torvalds <torvalds@g5.osdl.org>2005-12-24 12:32:55 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-12-24 12:32:55 -0800
commit10bb10dcb685cbe078e611f2dca3bd3e42fba0a8 (patch)
tree79303391de7ed61a5c55b3599e386ee062e758ea
parent3bf395994da5c238c37e281b50a5dd5f2532dc0c (diff)
parente445ee65cbefaa19131c972ae7fe221c95cf4cc4 (diff)
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
-rw-r--r--drivers/video/sbuslib.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/sbuslib.c b/drivers/video/sbuslib.c
index 646c43f921c5..3a74a63dd4f2 100644
--- a/drivers/video/sbuslib.c
+++ b/drivers/video/sbuslib.c
@@ -46,6 +46,9 @@ int sbusfb_mmap_helper(struct sbus_mmap_map *map,
unsigned long off;
int i;
+ if (!(vma->vm_flags & (VM_SHARED | VM_MAYSHARE)))
+ return -EINVAL;
+
size = vma->vm_end - vma->vm_start;
if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
return -EINVAL;

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