drm/fb-helper: Do not allocate unused apertures structure

The apertures field in struct fb_info is not used by DRM drivers. Do
not allocate it.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221219160516.23436-7-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 4276317..367fb8b 100644 (file)
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -473,8 +473,8 @@ EXPORT_SYMBOL(drm_fb_helper_init);
  * drm_fb_helper_alloc_info - allocate fb_info and some of its members
  * @fb_helper: driver-allocated fbdev helper
  *
- * A helper to alloc fb_info and the members cmap and apertures. Called
- * by the driver within the fb_probe fb_helper callback function. Drivers do not
+ * A helper to alloc fb_info and the member cmap. Called by the driver
+ * within the fb_probe fb_helper callback function. Drivers do not
  * need to release the allocated fb_info structure themselves, this is
  * automatically done when calling drm_fb_helper_fini().
  *
@@ -496,27 +496,11 @@ struct fb_info *drm_fb_helper_alloc_info(struct drm_fb_helper *fb_helper)
        if (ret)
                goto err_release;
 
-       /*
-        * TODO: We really should be smarter here and alloc an aperture
-        * for each IORESOURCE_MEM resource helper->dev->dev has and also
-        * init the ranges of the appertures based on the resources.
-        * Note some drivers currently count on there being only 1 empty
-        * aperture and fill this themselves, these will need to be dealt
-        * with somehow when fixing this.
-        */
-       info->apertures = alloc_apertures(1);
-       if (!info->apertures) {
-               ret = -ENOMEM;
-               goto err_free_cmap;
-       }
-
        fb_helper->info = info;
        info->skip_vt_switch = true;
 
        return info;
 
-err_free_cmap:
-       fb_dealloc_cmap(&info->cmap);
 err_release:
        framebuffer_release(info);
        return ERR_PTR(ret);