[PATCH 7/7] drm/rcar-du: Remove redundant calls to drm_connector_register_all()

[PATCH 7/7] drm/rcar-du: Remove redundant calls to drm_connector_register_all()

[Chris Wilson]

Up to now, the recommendation was for drivers to call drm_dev_register()
followed by drm_connector_register_all(). Now that
drm_connector_register() is safe against multiple invocations, we can
move drm_connector_register_all() to drm_dev_register() and not suffer
from any backwards compatibility issues with drivers not following the
more rigorous init ordering.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org
---
 drivers/gpu/drm/rcar-du/rcar_du_drv.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
index 48ec4b6e8b26..36d390093c92 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
@@ -278,7 +278,6 @@ static int rcar_du_remove(struct platform_device *pdev)
 	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
 	struct drm_device *ddev = rcdu->ddev;
 
-	drm_connector_unregister_all(ddev);
 	drm_dev_unregister(ddev);
 
 	if (rcdu->fbdev)
@@ -360,10 +359,6 @@ static int rcar_du_probe(struct platform_device *pdev)
 	if (ret)
 		goto error;
 
-	ret = drm_connector_register_all(ddev);
-	if (ret < 0)
-		goto error;
-
 	DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
 
 	return 0;
-- 
2.8.1

Re: [PATCH 7/7] drm/rcar-du: Remove redundant calls to drm_connector_register_all()

[Daniel Vetter]

On Fri, Jun 17, 2016 at 09:25:23AM +0100, Chris Wilson wrote:
> Up to now, the recommendation was for drivers to call drm_dev_register()
> followed by drm_connector_register_all(). Now that
> drm_connector_register() is safe against multiple invocations, we can
> move drm_connector_register_all() to drm_dev_register() and not suffer
> from any backwards compatibility issues with drivers not following the
> more rigorous init ordering.
> 
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-renesas-soc@vger.kernel.org

Ok, merged the driver patches now. Would be good to unexport/static
drm_connector_register_all, and I think there's a few drivers (like vc4)
which open-coded it.
-Daniel

> ---
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> index 48ec4b6e8b26..36d390093c92 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -278,7 +278,6 @@ static int rcar_du_remove(struct platform_device *pdev)
>  	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
>  	struct drm_device *ddev = rcdu->ddev;
>  
> -	drm_connector_unregister_all(ddev);
>  	drm_dev_unregister(ddev);
>  
>  	if (rcdu->fbdev)
> @@ -360,10 +359,6 @@ static int rcar_du_probe(struct platform_device *pdev)
>  	if (ret)
>  		goto error;
>  
> -	ret = drm_connector_register_all(ddev);
> -	if (ret < 0)
> -		goto error;
> -
>  	DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
>  
>  	return 0;
> -- 
> 2.8.1
> 

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

Re: [PATCH 7/7] drm/rcar-du: Remove redundant calls to drm_connector_register_all()

[Laurent Pinchart]

Hi Chris,

Thank you for the patch.

On Friday 17 Jun 2016 09:25:23 Chris Wilson wrote:
> Up to now, the recommendation was for drivers to call drm_dev_register()
> followed by drm_connector_register_all(). Now that
> drm_connector_register() is safe against multiple invocations, we can
> move drm_connector_register_all() to drm_dev_register() and not suffer
> from any backwards compatibility issues with drivers not following the
> more rigorous init ordering.
> 
> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
> Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-renesas-soc@vger.kernel.org

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

> ---
>  drivers/gpu/drm/rcar-du/rcar_du_drv.c | 5 -----
>  1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index 48ec4b6e8b26..36d390093c92
> 100644
> --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c
> @@ -278,7 +278,6 @@ static int rcar_du_remove(struct platform_device *pdev)
>  	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);
>  	struct drm_device *ddev = rcdu->ddev;
> 
> -	drm_connector_unregister_all(ddev);
>  	drm_dev_unregister(ddev);
> 
>  	if (rcdu->fbdev)
> @@ -360,10 +359,6 @@ static int rcar_du_probe(struct platform_device *pdev)
>  	if (ret)
>  		goto error;
> 
> -	ret = drm_connector_register_all(ddev);
> -	if (ret < 0)
> -		goto error;
> -
>  	DRM_INFO("Device %s probed\n", dev_name(&pdev->dev));
> 
>  	return 0;

-- 
Regards,

Laurent Pinchart