drm: Split drm_map and drm_local_map

Once upon a time, the DRM made the distinction between the drm_map
data structure exchanged with user space and the drm_local_map used
in the kernel.

For some reasons, while the BSD port still has that "feature", the
linux part abused drm_map for kernel internal usage as the local
map only existed as a typedef of the struct drm_map.

This patch fixes it by declaring struct drm_local_map separately
(though its content is currently identical to the userspace variant),
and changing the kernel code to only use that, except when it's a
user<->kernel interface (ie. ioctl).

This allows subsequent changes to the in-kernel format

I've also replaced the use of drm_local_map_t with struct drm_local_map
in a couple of places. Mostly by accident but they are the same (the
former is a typedef of the later) and I have some remote plans and
half finished patch to completely kill the drm_local_map_t typedef
so I left those bits in.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/drm/drm_memory.c b/drivers/gpu/drm/drm_memory.c
index bcc869bc4092..0c707f533eab 100644
--- a/drivers/gpu/drm/drm_memory.c
+++ b/drivers/gpu/drm/drm_memory.c
@@ -159,7 +159,7 @@ static inline void *agp_remap(unsigned long offset, unsigned long size,
 
 #endif                          /* debug_memory */
 
-void drm_core_ioremap(struct drm_map *map, struct drm_device *dev)
+void drm_core_ioremap(struct drm_local_map *map, struct drm_device *dev)
 {
         if (drm_core_has_AGP(dev) &&
             dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
@@ -169,7 +169,7 @@ void drm_core_ioremap(struct drm_map *map, struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_core_ioremap);
 
-void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev)
+void drm_core_ioremap_wc(struct drm_local_map *map, struct drm_device *dev)
 {
         if (drm_core_has_AGP(dev) &&
             dev->agp && dev->agp->cant_use_aperture && map->type == _DRM_AGP)
@@ -179,7 +179,7 @@ void drm_core_ioremap_wc(struct drm_map *map, struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_core_ioremap_wc);
 
-void drm_core_ioremapfree(struct drm_map *map, struct drm_device *dev)
+void drm_core_ioremapfree(struct drm_local_map *map, struct drm_device *dev)
 {
         if (!map->handle || !map->size)
                 return;