drm: Pass the user drm_mode_fb_cmd2 as const to .fb_create()

Drivers shouldn't clobber the passed in addfb ioctl parameters.
i915 was doing just that. To prevent it from happening again,
pass the struct around as const, starting all the way from
internal_framebuffer_create().

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index 541a610667ad..9759009d1da3 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -309,7 +309,7 @@ static const struct drm_framebuffer_funcs ast_fb_funcs = {
 
 int ast_framebuffer_init(struct drm_device *dev,
                          struct ast_framebuffer *ast_fb,
-                         struct drm_mode_fb_cmd2 *mode_cmd,
+                         const struct drm_mode_fb_cmd2 *mode_cmd,
                          struct drm_gem_object *obj)
 {
         int ret;
@@ -327,7 +327,7 @@ int ast_framebuffer_init(struct drm_device *dev,
 static struct drm_framebuffer *
 ast_user_framebuffer_create(struct drm_device *dev,
                struct drm_file *filp,
-               struct drm_mode_fb_cmd2 *mode_cmd)
+               const struct drm_mode_fb_cmd2 *mode_cmd)
 {
         struct drm_gem_object *obj;
         struct ast_framebuffer *ast_fb;