linux-kernel - [PATCH 2/8] drm/rockchip: Get rid of some unnecessary code

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Date:   Wed, 14 Sep 2016 21:54:55 +0900
From:   Tomasz Figa <tfiga@...omium.org>
To:     dri-devel@...ts.freedesktop.org
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Heiko Stuebner <heiko@...ech.de>,
        David Airlie <airlied@...ux.ie>,
        Mark Yao <mark.yao@...k-chips.com>,
        Sean Paul <seanpaul@...omium.org>,
        Daniel Kurtz <djkurtz@...omium.org>,
        Tomasz Figa <tfiga@...omium.org>
Subject: [PATCH 2/8] drm/rockchip: Get rid of some unnecessary code

Current code implements prepare_fb and cleanup_fb callbacks only to
grab/release fb references, which is already done by atomic framework
when creating/destryoing plane state. Let's remove these
unused bits.

Signed-off-by: Tomasz Figa <tfiga@...omium.org>
---
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 18 ------------------
 1 file changed, 18 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 7e811cf..68988c6 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -641,22 +641,6 @@ static void vop_plane_destroy(struct drm_plane *plane)
 	drm_plane_cleanup(plane);
 }
 
-static int vop_plane_prepare_fb(struct drm_plane *plane,
-				struct drm_plane_state *new_state)
-{
-	if (plane->state->fb)
-		drm_framebuffer_reference(plane->state->fb);
-
-	return 0;
-}
-
-static void vop_plane_cleanup_fb(struct drm_plane *plane,
-				 struct drm_plane_state *old_state)
-{
-	if (old_state->fb)
-		drm_framebuffer_unreference(old_state->fb);
-}
-
 static int vop_plane_atomic_check(struct drm_plane *plane,
 			   struct drm_plane_state *state)
 {
@@ -849,8 +833,6 @@ static void vop_plane_atomic_update(struct drm_plane *plane,
 }
 
 static const struct drm_plane_helper_funcs plane_helper_funcs = {
-	.prepare_fb = vop_plane_prepare_fb,
-	.cleanup_fb = vop_plane_cleanup_fb,
 	.atomic_check = vop_plane_atomic_check,
 	.atomic_update = vop_plane_atomic_update,
 	.atomic_disable = vop_plane_atomic_disable,
-- 
2.8.0.rc3.226.g39d4020