drm/crtc: Remove duplicated ioctl code

Make drm_mode_add_fb() call drm_mode_add_fb2() after converting its
args to the new internal format, instead of duplicating code.

Also picks up a lot more error checking, which the legacy modes
should pass after being converted to the new format.

Signed-off-by: Chuck Ebbert <cebbert.lkml@gmail.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/drm_crtc.c

@@ -2955,11 +2955,9 @@ int drm_mode_addfb(struct drm_device *dev,
 {
 	struct drm_mode_fb_cmd *or = data;
 	struct drm_mode_fb_cmd2 r = {};
-	struct drm_mode_config *config = &dev->mode_config;
-	struct drm_framebuffer *fb;
-	int ret = 0;
+	int ret;
 
-	/* Use new struct with format internally */
+	/* convert to new format and call new ioctl */
 	r.fb_id = or->fb_id;
 	r.width = or->width;
 	r.height = or->height;
@@ -2967,26 +2965,11 @@ int drm_mode_addfb(struct drm_device *dev,
 	r.pixel_format = drm_mode_legacy_fb_format(or->bpp, or->depth);
 	r.handles[0] = or->handle;
 
-	if (!drm_core_check_feature(dev, DRIVER_MODESET))
-		return -EINVAL;
-
-	if ((config->min_width > r.width) || (r.width > config->max_width))
-		return -EINVAL;
-
-	if ((config->min_height > r.height) || (r.height > config->max_height))
-		return -EINVAL;
-
-	fb = dev->mode_config.funcs->fb_create(dev, file_priv, &r);
-	if (IS_ERR(fb)) {
-		DRM_DEBUG_KMS("could not create framebuffer\n");
-		return PTR_ERR(fb);
-	}
+	ret = drm_mode_addfb2(dev, &r, file_priv);
+	if (ret)
+		return ret;
 
-	mutex_lock(&file_priv->fbs_lock);
-	or->fb_id = fb->base.id;
-	list_add(&fb->filp_head, &file_priv->fbs);
-	DRM_DEBUG_KMS("[FB:%d]\n", fb->base.id);
-	mutex_unlock(&file_priv->fbs_lock);
+	or->fb_id = r.fb_id;
 
 	return ret;
 }