linux-kernel - Re: [PATCH v2 3/3] Revert "drm/client: Add drm_client_modeset

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Message-ID: <4ysvn7vcynvmjc53frgj2nwuctf6kd6xdphgfjm3ulgfaxwngm@mod6oqvfmxav>
Date: Thu, 31 Oct 2024 23:47:47 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: linux@...blig.org
Cc: ville.syrjala@...ux.intel.com, jfalempe@...hat.com, 
	tomi.valkeinen@...asonboard.com, maarten.lankhorst@...ux.intel.com, mripard@...nel.org, 
	tzimmermann@...e.de, airlied@...il.com, simona@...ll.ch, 
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/3] Revert "drm/client: Add
 drm_client_modeset_check()"

On Tue, Oct 29, 2024 at 11:47:05PM +0000, linux@...blig.org wrote:
> From: "Dr. David Alan Gilbert" <linux@...blig.org>
> 
> drm_client_modeset_check() was explicitly added in 2020 by
> commit 64593f2a6fc9 ("drm/client: Add drm_client_modeset_check()")
> but has never been used.
> 
> This reverts commit 64593f2a6fc933bb9a410bc3f8c261f3e57a9601.

Nit: Usually this comes before the commit message.  No need for repost
though.


Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>


> 
> Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
> ---
>  drivers/gpu/drm/drm_client_modeset.c | 35 ++++------------------------
>  include/drm/drm_client.h             |  1 -
>  2 files changed, 4 insertions(+), 32 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_client_modeset.c b/drivers/gpu/drm/drm_client_modeset.c
> index cee5eafbfb81..39201c11eaac 100644
> --- a/drivers/gpu/drm/drm_client_modeset.c
> +++ b/drivers/gpu/drm/drm_client_modeset.c
> @@ -995,7 +995,7 @@ bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation)
>  }
>  EXPORT_SYMBOL(drm_client_rotation);
>  
> -static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool active, bool check)
> +static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool active)
>  {
>  	struct drm_device *dev = client->dev;
>  	struct drm_plane *plane;
> @@ -1062,10 +1062,7 @@ static int drm_client_modeset_commit_atomic(struct drm_client_dev *client, bool
>  		}
>  	}
>  
> -	if (check)
> -		ret = drm_atomic_check_only(state);
> -	else
> -		ret = drm_atomic_commit(state);
> +	ret = drm_atomic_commit(state);
>  
>  out_state:
>  	if (ret == -EDEADLK)
> @@ -1126,30 +1123,6 @@ static int drm_client_modeset_commit_legacy(struct drm_client_dev *client)
>  	return ret;
>  }
>  
> -/**
> - * drm_client_modeset_check() - Check modeset configuration
> - * @client: DRM client
> - *
> - * Check modeset configuration.
> - *
> - * Returns:
> - * Zero on success or negative error code on failure.
> - */
> -int drm_client_modeset_check(struct drm_client_dev *client)
> -{
> -	int ret;
> -
> -	if (!drm_drv_uses_atomic_modeset(client->dev))
> -		return 0;
> -
> -	mutex_lock(&client->modeset_mutex);
> -	ret = drm_client_modeset_commit_atomic(client, true, true);
> -	mutex_unlock(&client->modeset_mutex);
> -
> -	return ret;
> -}
> -EXPORT_SYMBOL(drm_client_modeset_check);
> -
>  /**
>   * drm_client_modeset_commit_locked() - Force commit CRTC configuration
>   * @client: DRM client
> @@ -1168,7 +1141,7 @@ int drm_client_modeset_commit_locked(struct drm_client_dev *client)
>  
>  	mutex_lock(&client->modeset_mutex);
>  	if (drm_drv_uses_atomic_modeset(dev))
> -		ret = drm_client_modeset_commit_atomic(client, true, false);
> +		ret = drm_client_modeset_commit_atomic(client, true);
>  	else
>  		ret = drm_client_modeset_commit_legacy(client);
>  	mutex_unlock(&client->modeset_mutex);
> @@ -1246,7 +1219,7 @@ int drm_client_modeset_dpms(struct drm_client_dev *client, int mode)
>  
>  	mutex_lock(&client->modeset_mutex);
>  	if (drm_drv_uses_atomic_modeset(dev))
> -		ret = drm_client_modeset_commit_atomic(client, mode == DRM_MODE_DPMS_ON, false);
> +		ret = drm_client_modeset_commit_atomic(client, mode == DRM_MODE_DPMS_ON);
>  	else
>  		drm_client_modeset_dpms_legacy(client, mode);
>  	mutex_unlock(&client->modeset_mutex);
> diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h
> index bc0e66f9c425..ead3c3526ee3 100644
> --- a/include/drm/drm_client.h
> +++ b/include/drm/drm_client.h
> @@ -177,7 +177,6 @@ int drm_client_modeset_create(struct drm_client_dev *client);
>  void drm_client_modeset_free(struct drm_client_dev *client);
>  int drm_client_modeset_probe(struct drm_client_dev *client, unsigned int width, unsigned int height);
>  bool drm_client_rotation(struct drm_mode_set *modeset, unsigned int *rotation);
> -int drm_client_modeset_check(struct drm_client_dev *client);
>  int drm_client_modeset_commit_locked(struct drm_client_dev *client);
>  int drm_client_modeset_commit(struct drm_client_dev *client);
>  int drm_client_modeset_dpms(struct drm_client_dev *client, int mode);
> -- 
> 2.47.0
> 

-- 
With best wishes
Dmitry