Fix bttv and friends on 64bit machines with lots of memory.

We have a DMA32 zone now, lets use it to make sure the card
can reach the memory we have allocated for the video frame
buffers.

Signed-off-by: Gerds Hoffmann <kraxel@suse.de>
---
 drivers/media/video/video-buf.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6.18/drivers/media/video/video-buf.c
===================================================================
--- linux-2.6.18.orig/drivers/media/video/video-buf.c
+++ linux-2.6.18/drivers/media/video/video-buf.c
@@ -1224,7 +1224,7 @@ videobuf_vm_nopage(struct vm_area_struct
 		vaddr,vma->vm_start,vma->vm_end);
 	if (vaddr > vma->vm_end)
 		return NOPAGE_SIGBUS;
-	page = alloc_page(GFP_USER);
+	page = alloc_page(GFP_USER | __GFP_DMA32);
 	if (!page)
 		return NOPAGE_OOM;
 	clear_user_page(page_address(page), vaddr, page);