This is a note to let you know that I've just added the patch titled
gma500: Fix mmap frambuffer
to the 3.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
gma500-fix-mmap-frambuffer.patch
and it can be found in the queue-3.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 1278f7de7fa5606ed513a5271f7fb63910ef1b8b Mon Sep 17 00:00:00 2001
From: Yoichi Yuasa <[email protected]>
Date: Thu, 15 Mar 2012 14:50:16 +0000
Subject: gma500: Fix mmap frambuffer
From: Yoichi Yuasa <[email protected]>
commit 1278f7de7fa5606ed513a5271f7fb63910ef1b8b upstream.
It cannot map correctly if page fault begins from a intermediate address.
[The driver prefaults the mapping, so we need to work from the correct
base address not the faulting address otherwise the map appears offset by
the fault offset]
Signed-off-by: Yoichi Yuasa <[email protected]>
Signed-off-by: Alan Cox <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/gma500/framebuffer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -158,7 +158,7 @@ static int psbfb_vm_fault(struct vm_area
unsigned long phys_addr = (unsigned long)dev_priv->stolen_base;
page_num = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
- address = (unsigned long)vmf->virtual_address;
+ address = (unsigned long)vmf->virtual_address - (vmf->pgoff <<
PAGE_SHIFT);
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
Patches currently in stable-queue which might be from [email protected] are
queue-3.3/gma500-fix-mmap-frambuffer.patch
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