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blackfin video driver: fix bug when opening/reading/mmaping BF54x and BF52x framebuffer simultaneously 

http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_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 <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michael Hennerich 2008-03-28 14:16:06 -07:00 committed by Linus Torvalds
parent 7ef9861c74
commit 363df3994f
2 changed files with 2 additions and 2 deletions
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2
drivers/video/bf54x-lq043fb.c
View File

@ -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;
}

2
drivers/video/bfin-t350mcqb-fb.c
View File

@ -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;
}