mm, dax, gpu: convert vm_insert_mixed to pfn_t

Convert the raw unsigned long 'pfn' argument to pfn_t for the purpose of
evaluating the PFN_MAP and PFN_DEV flags.  When both are set it triggers
_PAGE_DEVMAP to be set in the resulting pte.

There are no functional changes to the gpu drivers as a result of this
conversion.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: David Airlie <airlied@linux.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/drm/gma500/framebuffer.c b/drivers/gpu/drm/gma500/framebuffer.c
index 2eaf1b31c7bd..72bc979fa0dc 100644
--- a/drivers/gpu/drm/gma500/framebuffer.c
+++ b/drivers/gpu/drm/gma500/framebuffer.c
@@ -21,6 +21,7 @@
 #include <linux/kernel.h>
 #include <linux/errno.h>
 #include <linux/string.h>
+#include <linux/pfn_t.h>
 #include <linux/mm.h>
 #include <linux/tty.h>
 #include <linux/slab.h>
@@ -132,7 +133,8 @@ static int psbfb_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
         for (i = 0; i < page_num; i++) {
                 pfn = (phys_addr >> PAGE_SHIFT);
 
-                ret = vm_insert_mixed(vma, address, pfn);
+                ret = vm_insert_mixed(vma, address,
+                                __pfn_to_pfn_t(pfn, PFN_DEV));
                 if (unlikely((ret == -EBUSY) || (ret != 0 && i > 0)))
                         break;
                 else if (unlikely(ret != 0)) {