drm/rockchip: vop: Fix reset of state in duplicate state crtc funcs

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>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230621223311.2239547-2-jonas@kwiboo.se

diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
index 86fd9f51c6928d89f67c848e8d6f3a13d3fbead8..3c68a239d88a426d983bf3cfa8f80eda37155b5a 100644 (file)
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
@@ -1613,7 +1613,8 @@ 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;