drm/crtc: Remove duplicated ioctl code

[Chuck Ebbert]

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 <chuckebbert at gmail.com>
---
 drm_crtc.c |   31 +++++++------------------------
 1 file changed, 7 insertions(+), 24 deletions(-)

Against 3.17.0, compile tested only.

diff a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -2925,11 +2925,9 @@ 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;
@@ -2937,27 +2934,12 @@ 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;
+
+       or->fb_id = r.fb_id;

-       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);
-
        return ret;
 }