The patch titled
blackfin video driver: fix bug when opening/reading/mmaping BF54x and BF52x framebuffer simultaneously
has been added to the -mm tree. Its filename is
blackfin-video-driver-fix-bug-when-opening-reading-mmaping-bf54x-and-bf52x-framebuffer-simultaneously.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: blackfin video driver: fix bug when opening/reading/mmaping BF54x and BF52x framebuffer simultaneously
From: Michael Hennerich <michael.hennerich@xxxxxxxxxx>
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@xxxxxxxxxx>
Signed-off-by: Bryan Wu <cooloney@xxxxxxxxxx>
Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Cc: "Antonino A. Daplas" <adaplas@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/video/bf54x-lq043fb.c | 2 +-
drivers/video/bfin-t350mcqb-fb.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff -puN drivers/video/bf54x-lq043fb.c~blackfin-video-driver-fix-bug-when-opening-reading-mmaping-bf54x-and-bf52x-framebuffer-simultaneously drivers/video/bf54x-lq043fb.c
--- a/drivers/video/bf54x-lq043fb.c~blackfin-video-driver-fix-bug-when-opening-reading-mmaping-bf54x-and-bf52x-framebuffer-simultaneously
+++ a/drivers/video/bf54x-lq043fb.c
@@ -384,7 +384,7 @@ static int bfin_bf54x_fb_mmap(struct fb_
* 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 -puN drivers/video/bfin-t350mcqb-fb.c~blackfin-video-driver-fix-bug-when-opening-reading-mmaping-bf54x-and-bf52x-framebuffer-simultaneously drivers/video/bfin-t350mcqb-fb.c
--- a/drivers/video/bfin-t350mcqb-fb.c~blackfin-video-driver-fix-bug-when-opening-reading-mmaping-bf54x-and-bf52x-framebuffer-simultaneously
+++ a/drivers/video/bfin-t350mcqb-fb.c
@@ -302,7 +302,7 @@ static int bfin_t350mcqb_fb_mmap(struct
* 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;
}
_
Patches currently in -mm which might be from michael.hennerich@xxxxxxxxxx are
input-touchscreen-driver-add-support-ad7877-touchscreen-driver.patch
blackfin-video-driver-update-the-bf52x-ezkit-video-framebuffer-driver-according-to-lkml-review.patch
blackfin-video-driver-update-the-bf52x-ezkit-video-framebuffer-driver-according-to-lkml-review-fix.patch
blackfin-video-driver-fix-bug-when-opening-reading-mmaping-bf54x-and-bf52x-framebuffer-simultaneously.patch
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