drm/fb-helper: Remove drm_mode_config_fb.

Remove drm_mode_config_fb, I don't see the point of it.
To make it clear that it's ok to use plane->fb directly,
move up drm_drv_uses_atomic_modeset so the code is skipped for atomic
drivers that require plane_state->fb.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170703115106.18783-1-maarten.lankhorst@linux.intel.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 574af01..84e47e5 100644 (file)
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -298,20 +298,6 @@ int drm_fb_helper_debug_enter(struct fb_info *info)
 }
 EXPORT_SYMBOL(drm_fb_helper_debug_enter);
 
-/* Find the real fb for a given fb helper CRTC */
-static struct drm_framebuffer *drm_mode_config_fb(struct drm_crtc *crtc)
-{
-       struct drm_device *dev = crtc->dev;
-       struct drm_crtc *c;
-
-       drm_for_each_crtc(c, dev) {
-               if (crtc->base.id == c->base.id)
-                       return c->primary->fb;
-       }
-
-       return NULL;
-}
-
 /**
  * drm_fb_helper_debug_leave - implementation for &fb_ops.fb_debug_leave
  * @info: fbdev registered by the helper
@@ -328,8 +314,11 @@ int drm_fb_helper_debug_leave(struct fb_info *info)
                struct drm_mode_set *mode_set = &helper->crtc_info[i].mode_set;
 
                crtc = mode_set->crtc;
+               if (drm_drv_uses_atomic_modeset(crtc->dev))
+                       continue;
+
                funcs = crtc->helper_private;
-               fb = drm_mode_config_fb(crtc);
+               fb = crtc->primary->fb;
 
                if (!crtc->enabled)
                        continue;
@@ -342,9 +331,6 @@ int drm_fb_helper_debug_leave(struct fb_info *info)
                if (funcs->mode_set_base_atomic == NULL)
                        continue;
 
-               if (drm_drv_uses_atomic_modeset(crtc->dev))
-                       continue;
-
                drm_fb_helper_restore_lut_atomic(mode_set->crtc);
                funcs->mode_set_base_atomic(mode_set->crtc, fb, crtc->x,
                                            crtc->y, LEAVE_ATOMIC_MODE_SET);