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, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/drm_context.c b/drivers/gpu/drm/drm_context.c
index 809ec0f..7d1e53c 100644
--- a/drivers/gpu/drm/drm_context.c
+++ b/drivers/gpu/drm/drm_context.c
@@ -143,7 +143,7 @@ int drm_getsareactx(struct drm_device *dev, void *data,
 		    struct drm_file *file_priv)
 {
 	struct drm_ctx_priv_map *request = data;
-	struct drm_map *map;
+	struct drm_local_map *map;
 	struct drm_map_list *_entry;
 
 	mutex_lock(&dev->struct_mutex);
@@ -186,7 +186,7 @@ int drm_setsareactx(struct drm_device *dev, void *data,
 		    struct drm_file *file_priv)
 {
 	struct drm_ctx_priv_map *request = data;
-	struct drm_map *map = NULL;
+	struct drm_local_map *map = NULL;
 	struct drm_map_list *r_list = NULL;
 
 	mutex_lock(&dev->struct_mutex);