linux-kernel - Re: [PATCH 4/5] drm/client: Remove unused drm_client_framebuffer

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Message-ID: <a56b486c-9341-41aa-a3ab-090f7ffd56d6@suse.de>
Date: Wed, 23 Oct 2024 08:46:40 +0200
From: Thomas Zimmermann <tzimmermann@...e.de>
To: linux@...blig.org, maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
 airlied@...il.com, simona@...ll.ch
Cc: dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/5] drm/client: Remove unused
 drm_client_framebuffer_flush

Hi

Am 23.10.24 um 01:29 schrieb linux@...blig.org:
> From: "Dr. David Alan Gilbert" <linux@...blig.org>
>
> drm_client_framebuffer_flush() was explicitly added in 2020
> by
> commit c9c03e3cf072 ("drm/client: Add drm_client_framebuffer_flush()")
> but has never been used.
>
> Remove it.

I had a patchset to use this helper for fbdev emulation. It just needs 
preparation in a number of drivers.

Best regards
Thomas

>
> Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
> ---
>   drivers/gpu/drm/drm_client.c | 33 ---------------------------------
>   include/drm/drm_client.h     |  1 -
>   2 files changed, 34 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_client.c b/drivers/gpu/drm/drm_client.c
> index bfedcbf516db..5d10ad3c2ca5 100644
> --- a/drivers/gpu/drm/drm_client.c
> +++ b/drivers/gpu/drm/drm_client.c
> @@ -552,39 +552,6 @@ void drm_client_framebuffer_delete(struct drm_client_buffer *buffer)
>   }
>   EXPORT_SYMBOL(drm_client_framebuffer_delete);
>   
> -/**
> - * drm_client_framebuffer_flush - Manually flush client framebuffer
> - * @buffer: DRM client buffer (can be NULL)
> - * @rect: Damage rectangle (if NULL flushes all)
> - *
> - * This calls &drm_framebuffer_funcs->dirty (if present) to flush buffer changes
> - * for drivers that need it.
> - *
> - * Returns:
> - * Zero on success or negative error code on failure.
> - */
> -int drm_client_framebuffer_flush(struct drm_client_buffer *buffer, struct drm_rect *rect)
> -{
> -	if (!buffer || !buffer->fb || !buffer->fb->funcs->dirty)
> -		return 0;
> -
> -	if (rect) {
> -		struct drm_clip_rect clip = {
> -			.x1 = rect->x1,
> -			.y1 = rect->y1,
> -			.x2 = rect->x2,
> -			.y2 = rect->y2,
> -		};
> -
> -		return buffer->fb->funcs->dirty(buffer->fb, buffer->client->file,
> -						0, 0, &clip, 1);
> -	}
> -
> -	return buffer->fb->funcs->dirty(buffer->fb, buffer->client->file,
> -					0, 0, NULL, 0);
> -}
> -EXPORT_SYMBOL(drm_client_framebuffer_flush);
> -
>   #ifdef CONFIG_DEBUG_FS
>   static int drm_client_debugfs_internal_clients(struct seq_file *m, void *data)
>   {
> diff --git a/include/drm/drm_client.h b/include/drm/drm_client.h
> index bc0e66f9c425..560aae47e06d 100644
> --- a/include/drm/drm_client.h
> +++ b/include/drm/drm_client.h
> @@ -165,7 +165,6 @@ struct drm_client_buffer {
>   struct drm_client_buffer *
>   drm_client_framebuffer_create(struct drm_client_dev *client, u32 width, u32 height, u32 format);
>   void drm_client_framebuffer_delete(struct drm_client_buffer *buffer);
> -int drm_client_framebuffer_flush(struct drm_client_buffer *buffer, struct drm_rect *rect);
>   int drm_client_buffer_vmap_local(struct drm_client_buffer *buffer,
>   				 struct iosys_map *map_copy);
>   void drm_client_buffer_vunmap_local(struct drm_client_buffer *buffer);

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)