drm: PAGE_CACHE_WC is x86 only so far

The page protections need to be checked whether they need to be more flexible.

Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_gem.c b/drivers/gpu/drm/drm_gem.c
index b3939de6affd..9da581452874 100644
--- a/drivers/gpu/drm/drm_gem.c
+++ b/drivers/gpu/drm/drm_gem.c
@@ -516,7 +516,9 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
         vma->vm_private_data = map->handle;
         /* FIXME: use pgprot_writecombine when available */
         prot = pgprot_val(vma->vm_page_prot);
+#ifdef CONFIG_X86
         prot |= _PAGE_CACHE_WC;
+#endif
         vma->vm_page_prot = __pgprot(prot);
 
         vma->vm_file = filp;    /* Needed for drm_vm_open() */