linux-kernel - [PATCH v5 14/14] drm: remove unused and redundant callbacks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 13 Jul 2017 18:25:38 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     linux-kernel@...r.kernel.org
Cc:     Peter Rosin <peda@...ntia.se>,
        Daniel Vetter <daniel.vetter@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Sean Paul <seanpaul@...omium.org>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org,
        Lionel Landwerlin <lionel.g.landwerlin@...el.com>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>
Subject: [PATCH v5 14/14] drm: remove unused and redundant callbacks

Drivers no longer have any need for these callbacks, and there are no
users. Zap. Zap-zap-zzzap-p-pp-p.

Acked-by: Daniel Vetter <daniel.vetter@...ll.ch>
Signed-off-by: Peter Rosin <peda@...ntia.se>
---
 include/drm/drm_crtc.h                   |  8 --------
 include/drm/drm_fb_helper.h              | 32 --------------------------------
 include/drm/drm_modeset_helper_vtables.h | 16 ----------------
 3 files changed, 56 deletions(-)

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 3a911a64c257..0cc89623abe6 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -358,14 +358,6 @@ struct drm_crtc_funcs {
 	 * drm_crtc_enable_color_mgmt(), which then supports the legacy gamma
 	 * interface through the drm_atomic_helper_legacy_gamma_set()
 	 * compatibility implementation.
-	 *
-	 * NOTE:
-	 *
-	 * Drivers that support gamma tables and also fbdev emulation through
-	 * the provided helper library need to take care to fill out the gamma
-	 * hooks for both. Currently there's a bit an unfortunate duplication
-	 * going on, which should eventually be unified to just one set of
-	 * hooks.
 	 */
 	int (*gamma_set)(struct drm_crtc *crtc, u16 *r, u16 *g, u16 *b,
 			 uint32_t size,
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index ea170b96e88d..21c56305df1d 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -85,38 +85,6 @@ struct drm_fb_helper_surface_size {
  */
 struct drm_fb_helper_funcs {
 	/**
-	 * @gamma_set:
-	 *
-	 * Set the given gamma LUT register on the given CRTC.
-	 *
-	 * This callback is optional.
-	 *
-	 * FIXME:
-	 *
-	 * This callback is functionally redundant with the core gamma table
-	 * support and simply exists because the fbdev hasn't yet been
-	 * refactored to use the core gamma table interfaces.
-	 */
-	void (*gamma_set)(struct drm_crtc *crtc, u16 red, u16 green,
-			  u16 blue, int regno);
-	/**
-	 * @gamma_get:
-	 *
-	 * Read the given gamma LUT register on the given CRTC, used to save the
-	 * current LUT when force-restoring the fbdev for e.g. kdbg.
-	 *
-	 * This callback is optional.
-	 *
-	 * FIXME:
-	 *
-	 * This callback is functionally redundant with the core gamma table
-	 * support and simply exists because the fbdev hasn't yet been
-	 * refactored to use the core gamma table interfaces.
-	 */
-	void (*gamma_get)(struct drm_crtc *crtc, u16 *red, u16 *green,
-			  u16 *blue, int regno);
-
-	/**
 	 * @fb_probe:
 	 *
 	 * Driver callback to allocate and initialize the fbdev info structure.
diff --git a/include/drm/drm_modeset_helper_vtables.h b/include/drm/drm_modeset_helper_vtables.h
index 06569845708c..6cdcb4263a73 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -267,22 +267,6 @@ struct drm_crtc_helper_funcs {
 				    enum mode_set_atomic);
 
 	/**
-	 * @load_lut:
-	 *
-	 * Load a LUT prepared with the &drm_fb_helper_funcs.gamma_set vfunc.
-	 *
-	 * This callback is optional and is only used by the fbdev emulation
-	 * helpers.
-	 *
-	 * FIXME:
-	 *
-	 * This callback is functionally redundant with the core gamma table
-	 * support and simply exists because the fbdev hasn't yet been
-	 * refactored to use the core gamma table interfaces.
-	 */
-	void (*load_lut)(struct drm_crtc *crtc);
-
-	/**
 	 * @disable:
 	 *
 	 * This callback should be used to disable the CRTC. With the atomic
-- 
2.11.0