From 363df3994f034e7fe87d146fcf19f6a3ab2a2291 Mon Sep 17 00:00:00 2001 From: Michael Hennerich Date: Fri, 28 Mar 2008 14:16:06 -0700 Subject: [PATCH] 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 Signed-off-by: Bryan Wu Cc: Geert Uytterhoeven Cc: "Antonino A. Daplas" Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- 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 986a550c043..eefba3d0e4b 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 f36ca7f6d8a..135d6dd7e67 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; } -- 2.41.1