The prepare_writeback_job() connector helper hook needs access to
the parent drm_connector object as well as the drm_writeback_connector
object itself. So, pass in the top level drm_connector and traverse
down to drm_writeback_connector rather than passing in the lower
level object and traversing back up. This also makes it uniform
with the params passed to other drm_connector_helper_funcs hooks.

Signed-off-by: Suraj Kandpal <[email protected]>
Reviewed-by: Dmitry Baryshkov <[email protected]>
Reviewed-by: John Harrison <[email protected]>
Reviewed-by: Alex Hung <[email protected]>
---
v6 -> v7:
- Rebase over latest kernel
- Rebase over latest writeback series by Dmitry

v5 -> v6:
- Rebase over latest kernel

v3 -> v4:
- Update subject line for consitency (John)
- Update commit message across commits for consitency (John)

 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c | 4 ++--
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.h | 2 +-
 drivers/gpu/drm/drm_writeback.c                      | 2 +-
 drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c        | 3 +--
 drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c  | 5 ++---
 drivers/gpu/drm/vkms/vkms_writeback.c                | 2 +-
 include/drm/drm_modeset_helper_vtables.h             | 2 +-
 7 files changed, 9 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c
index e98481d5aa74..afed660762fd 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.c
@@ -131,8 +131,8 @@ STATIC_IFN_KUNIT int 
amdgpu_dm_wb_connector_get_modes(struct drm_connector *conn
 }
 EXPORT_IF_KUNIT(amdgpu_dm_wb_connector_get_modes);
 
-STATIC_IFN_KUNIT int amdgpu_dm_wb_prepare_job(struct drm_writeback_connector 
*wb_connector,
-                              struct drm_writeback_job *job)
+STATIC_IFN_KUNIT int amdgpu_dm_wb_prepare_job(struct drm_connector 
*wb_connector,
+                                             struct drm_writeback_job *job)
 {
        struct amdgpu_framebuffer *afb;
        struct drm_gem_object *obj;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.h 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.h
index 8d39a37e80f0..ede7ff007ad7 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_wb.h
@@ -59,7 +59,7 @@ int amdgpu_dm_wb_encoder_atomic_check(struct drm_encoder 
*encoder,
                                      struct drm_crtc_state *crtc_state,
                                      struct drm_connector_state *conn_state);
 int amdgpu_dm_wb_connector_get_modes(struct drm_connector *connector);
-int amdgpu_dm_wb_prepare_job(struct drm_writeback_connector *wb_connector,
+int amdgpu_dm_wb_prepare_job(struct drm_connector *wb_connector,
                             struct drm_writeback_job *job);
 void amdgpu_dm_wb_cleanup_job(struct drm_writeback_connector *connector,
                              struct drm_writeback_job *job);
diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c
index 33be7a0b9a89..f54ee84c2e8a 100644
--- a/drivers/gpu/drm/drm_writeback.c
+++ b/drivers/gpu/drm/drm_writeback.c
@@ -369,7 +369,7 @@ int drm_writeback_prepare_job(struct drm_writeback_job *job)
        int ret;
 
        if (funcs->prepare_writeback_job) {
-               ret = funcs->prepare_writeback_job(wb_connector, job);
+               ret = funcs->prepare_writeback_job(connector, job);
                if (ret < 0)
                        return ret;
        }
diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c 
b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c
index 38c214dea08d..88227aa7ee69 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c
@@ -87,10 +87,9 @@ static const struct drm_connector_funcs dpu_wb_conn_funcs = {
        .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 };
 
-static int dpu_wb_conn_prepare_job(struct drm_writeback_connector *wb_conn,
+static int dpu_wb_conn_prepare_job(struct drm_connector *connector,
                struct drm_writeback_job *job)
 {
-       struct drm_connector *connector = drm_writeback_to_connector(wb_conn);
        struct dpu_wb_connector *dpu_wb_conn = to_dpu_wb_conn(connector);
 
        if (!job->fb)
diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c 
b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
index 02e74048d00f..6c4685147e49 100644
--- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
+++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
@@ -47,11 +47,10 @@ static int rcar_du_wb_conn_get_modes(struct drm_connector 
*connector)
                                    dev->mode_config.max_height);
 }
 
-static int rcar_du_wb_prepare_job(struct drm_writeback_connector *connector,
+static int rcar_du_wb_prepare_job(struct drm_connector *connector,
                                  struct drm_writeback_job *job)
 {
-       struct drm_connector *conn = drm_writeback_to_connector(connector);
-       struct rcar_du_crtc *rcrtc = wb_to_rcar_crtc(conn);
+       struct rcar_du_crtc *rcrtc = wb_to_rcar_crtc(connector);
        struct rcar_du_wb_job *rjob;
        int ret;
 
diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c 
b/drivers/gpu/drm/vkms/vkms_writeback.c
index 8d72946989fe..be67b13e7347 100644
--- a/drivers/gpu/drm/vkms/vkms_writeback.c
+++ b/drivers/gpu/drm/vkms/vkms_writeback.c
@@ -72,7 +72,7 @@ static int vkms_wb_connector_get_modes(struct drm_connector 
*connector)
                                    dev->mode_config.max_height);
 }
 
-static int vkms_wb_prepare_job(struct drm_writeback_connector *wb_connector,
+static int vkms_wb_prepare_job(struct drm_connector *connector,
                               struct drm_writeback_job *job)
 {
        struct vkms_writeback_job *vkmsjob;
diff --git a/include/drm/drm_modeset_helper_vtables.h 
b/include/drm/drm_modeset_helper_vtables.h
index 60b30cc26940..bff41a1d49a6 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -1161,7 +1161,7 @@ struct drm_connector_helper_funcs {
         *
         * This callback is used by the atomic modeset helpers.
         */
-       int (*prepare_writeback_job)(struct drm_writeback_connector *connector,
+       int (*prepare_writeback_job)(struct drm_connector *connector,
                                     struct drm_writeback_job *job);
        /**
         * @cleanup_writeback_job:
-- 
2.34.1

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