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Subject[PATCH] gma500: Fix mmap frambuffer

It cannot map correctly if page fault begins from a intermediate address.

Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
---
drivers/gpu/drm/gma500/framebuffer.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index be61673..5154493 100644
--- 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_struct *vma, struct vm_fault *vmf)
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);

--
1.7.0.4

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