From: Michael Hennerich

http://blackfin.uclinux.org/gf/proje...r_item_id=3974

opening/reading/mmaping BF54x and BF52x framebuffer simultaneously
triggers BUG: failure at mm/nommu.c:470/add_nommu_vma()
Add VM_SHARED to the default vm_flags

Signed-off-by: Michael Hennerich
Signed-off-by: Bryan Wu
---
drivers/video/bf54x-lq043fb.c | 2 +-
drivers/video/bfin-t350mcqb-fb.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/video/bf54x-lq043fb.c b/drivers/video/bf54x-lq043fb.c
index 986a550..eefba3d 100644
--- a/drivers/video/bf54x-lq043fb.c
+++ b/drivers/video/bf54x-lq043fb.c
@@ -384,7 +384,7 @@ static int bfin_bf54x_fb_mmap(struct fb_info *info, struct vm_area_struct *vma)
* Other flags can be set, and are documented in
* include/linux/mm.h
*/
- vma->vm_flags |= VM_MAYSHARE;
+ vma->vm_flags |= VM_MAYSHARE | VM_SHARED;

return 0;
}
diff --git a/drivers/video/bfin-t350mcqb-fb.c b/drivers/video/bfin-t350mcqb-fb.c
index 68d5857..c92d457 100644
--- a/drivers/video/bfin-t350mcqb-fb.c
+++ b/drivers/video/bfin-t350mcqb-fb.c
@@ -302,7 +302,7 @@ static int bfin_t350mcqb_fb_mmap(struct fb_info *info, struct vm_area_struct *vm
* Other flags can be set, and are documented in
* include/linux/mm.h
*/
- vma->vm_flags |= VM_MAYSHARE;
+ vma->vm_flags |= VM_MAYSHARE | VM_SHARED;

return 0;
}
--
1.5.4.3
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