Re: [PATCH v4 5/7] drm: writeback: Modify drm_writeback_get_out_fence helper

[John Harrison <John.Harrison@Igalia.com>]

On 5/20/26 22:37, Suraj Kandpal wrote:
> drm_writeback_get_out_fence() does not itself need the parent
> drm_connector object, but update it to take drm_connector for
> consistency across the writeback interface, which is being moved
> to use the top level drm_connector and traverse down to
> drm_writeback_connector rather than passing in the lower level
> object and traversing back up.
>
> Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>

Reviewed-by: John Harrison <John.Harrison@Igalia.com>

> ---
> v3 -> v4:
> - Update subject line for consitency (John)
> - Update commit message across commits for consitency (John)
>
>   drivers/gpu/drm/drm_atomic_uapi.c | 4 +---
>   drivers/gpu/drm/drm_writeback.c   | 5 ++---
>   include/drm/drm_writeback.h       | 2 +-
>   3 files changed, 4 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
> index 7add982e3a3f..65845b096b0c 100644
> --- a/drivers/gpu/drm/drm_atomic_uapi.c
> +++ b/drivers/gpu/drm/drm_atomic_uapi.c
> @@ -1450,7 +1450,6 @@ static int prepare_signaling(struct drm_device *dev,
>   	}
>   
>   	for_each_new_connector_in_state(state, conn, conn_state, i) {
> -		struct drm_writeback_connector *wb_conn;
>   		struct drm_out_fence_state *f;
>   		struct dma_fence *fence;
>   		s32 __user *fence_ptr;
> @@ -1472,8 +1471,7 @@ static int prepare_signaling(struct drm_device *dev,
>   		f[*num_fences].out_fence_ptr = fence_ptr;
>   		*fence_state = f;
>   
> -		wb_conn = &conn->writeback;
> -		fence = drm_writeback_get_out_fence(wb_conn);
> +		fence = drm_writeback_get_out_fence(conn);
>   		if (!fence)
>   			return -ENOMEM;
>   
> diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c
> index f3b4371d4201..72e437f4394b 100644
> --- a/drivers/gpu/drm/drm_writeback.c
> +++ b/drivers/gpu/drm/drm_writeback.c
> @@ -528,11 +528,10 @@ drm_writeback_signal_completion(struct drm_connector *connector,
>   EXPORT_SYMBOL(drm_writeback_signal_completion);
>   
>   struct dma_fence *
> -drm_writeback_get_out_fence(struct drm_writeback_connector *wb_connector)
> +drm_writeback_get_out_fence(struct drm_connector *connector)
>   {
>   	struct dma_fence *fence;
> -	struct drm_connector *connector =
> -		drm_writeback_to_connector(wb_connector);
> +	struct drm_writeback_connector *wb_connector = &connector->writeback;
>   
>   	if (WARN_ON(connector->connector_type !=
>   		    DRM_MODE_CONNECTOR_WRITEBACK))
> diff --git a/include/drm/drm_writeback.h b/include/drm/drm_writeback.h
> index 5e8ab51c2da4..2afa48ea7c00 100644
> --- a/include/drm/drm_writeback.h
> +++ b/include/drm/drm_writeback.h
> @@ -104,5 +104,5 @@ drm_writeback_signal_completion(struct drm_connector *connector,
>   				int status);
>   
>   struct dma_fence *
> -drm_writeback_get_out_fence(struct drm_writeback_connector *wb_connector);
> +drm_writeback_get_out_fence(struct drm_connector *connector);
>   #endif