Re: [PATCH 4/4] drm/qxl: add drm_gem_plane_helper_prepare_fb

[Daniel Vetter <daniel@ffwll.ch>]

On Fri, Apr 29, 2022 at 03:42:30PM +0200, Christian König wrote:
> We could need to wait for the pin to complete here.
> 
> Signed-off-by: Christian König <christian.koenig@amd.com>
> Cc: Dave Airlie <airlied@redhat.com>
> Cc: Gerd Hoffmann <kraxel@redhat.com>
> Cc: virtualization@lists.linux-foundation.org
> Cc: spice-devel@lists.freedesktop.org

Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

> ---
>  drivers/gpu/drm/qxl/qxl_display.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
> index 9a9c29b1d3e1..9a64fa4c7530 100644
> --- a/drivers/gpu/drm/qxl/qxl_display.c
> +++ b/drivers/gpu/drm/qxl/qxl_display.c
> @@ -34,6 +34,7 @@
>  #include <drm/drm_plane_helper.h>
>  #include <drm/drm_probe_helper.h>
>  #include <drm/drm_simple_kms_helper.h>
> +#include <drm/drm_gem_atomic_helper.h>
>  
>  #include "qxl_drv.h"
>  #include "qxl_object.h"
> @@ -829,6 +830,7 @@ static int qxl_plane_prepare_fb(struct drm_plane *plane,
>  	struct qxl_device *qdev = to_qxl(plane->dev);
>  	struct drm_gem_object *obj;
>  	struct qxl_bo *user_bo;
> +	int ret;
>  
>  	if (!new_state->fb)
>  		return 0;
> @@ -852,7 +854,11 @@ static int qxl_plane_prepare_fb(struct drm_plane *plane,
>  		qxl_free_cursor(old_cursor_bo);
>  	}
>  
> -	return qxl_bo_pin(user_bo);
> +	ret = qxl_bo_pin(user_bo);
> +	if (ret)
> +		return ret;
> +
> +	return drm_gem_plane_helper_prepare_fb(plane, new_state);
>  }
>  
>  static void qxl_plane_cleanup_fb(struct drm_plane *plane,
> -- 
> 2.25.1
> 

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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