[PATCH 07/11] drm/i915: stop using kmap in i915_gem_object_map

[Christoph Hellwig <hch@xxxxxx>]

kmap for !PageHighmem is just a convoluted way to say page_address,
and kunmap is a no-op in that case.

Signed-off-by: Christoph Hellwig <hch@xxxxxx>
---
 drivers/gpu/drm/i915/gem/i915_gem_pages.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_pages.c 
b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
index d6eeefab3d018b..6550c0bc824ea2 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_pages.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_pages.c
@@ -162,8 +162,6 @@ static void unmap_object(struct drm_i915_gem_object *obj, 
void *ptr)
 {
        if (is_vmalloc_addr(ptr))
                vunmap(ptr);
-       else
-               kunmap(kmap_to_page(ptr));
 }
 
 struct sg_table *
@@ -277,11 +275,10 @@ static void *i915_gem_object_map(struct 
drm_i915_gem_object *obj,
                 * forever.
                 *
                 * So if the page is beyond the 32b boundary, make an explicit
-                * vmap. On 64b, this check will be optimised away as we can
-                * directly kmap any page on the system.
+                * vmap.
                 */
                if (!PageHighMem(page))
-                       return kmap(page);
+                       return page_address(page);
        }
 
        mem = stack;
-- 
2.28.0