[PATCH 2/2] Blackfin Video Driver: fix bug when opening/reading/mmaping BF54x and BF52x framebuffer simultaneously
From: Bryan Wu <cooloney@kernel.org>
Date: 2008-03-26 10:20:34
Also in:
lkml
Subsystem:
framebuffer layer, the rest · Maintainers:
Helge Deller, Linus Torvalds
From: Michael Hennerich <michael.hennerich@analog.com> 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> --- 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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