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From:   Jonas Karlman <jonas@kwiboo.se>
Subject: [PATCH v2 1/5] drm/rockchip: vop: Fix reset of state in duplicate
 state crtc funcs
Date:   Wed, 21 Jun 2023 22:33:17 +0000 (UTC)
Message-ID: <20230621223311.2239547-2-jonas@kwiboo.se>
In-Reply-To: <20230621223311.2239547-1-jonas@kwiboo.se>
References: <20230621223311.2239547-1-jonas@kwiboo.se>
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To:     Sandy Huang <hjc@rock-chips.com>, Heiko Stuebner <heiko@sntech.de>,
        David Airlie <airlied@gmail.com>,
        Daniel Vetter <daniel@ffwll.ch>,
        Mark Yao <markyao0591@gmail.com>
Cc:     Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
        Andy Yan <andy.yan@rock-chips.com>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        dri-devel@lists.freedesktop.org,
        linux-arm-kernel@lists.infradead.org,
        linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org,
        Jonas Karlman <jonas@kwiboo.se>
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struct rockchip_crtc_state members such as output_type, output_bpc and
enable_afbc is always reset to zero in the atomic_duplicate_state crtc
funcs.

Fix this by using kmemdup on the subclass rockchip_crtc_state struct.

Fixes: 4e257d9eee23 ("drm/rockchip: get rid of rockchip_drm_crtc_mode_config")
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
---
v2:
- Collect r-b tag

 drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index a530ecc4d207..60b23636a3fe 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1614,7 +1614,8 @@ static struct drm_crtc_state *vop_crtc_duplicate_state(struct drm_crtc *crtc)
 	if (WARN_ON(!crtc->state))
 		return NULL;
 
-	rockchip_state = kzalloc(sizeof(*rockchip_state), GFP_KERNEL);
+	rockchip_state = kmemdup(to_rockchip_crtc_state(crtc->state),
+				 sizeof(*rockchip_state), GFP_KERNEL);
 	if (!rockchip_state)
 		return NULL;
 
-- 
2.41.0