Re: [PATCH v4 05/11] drm: Add Allwinner A10 Display Engine support

[Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>]

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Hi Boris,

On Tue, Apr 26, 2016 at 11:14:19AM +0200, Boris Brezillon wrote:
> Hi Maxime,
> 
> On Mon, 25 Apr 2016 15:22:46 +0200
> Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> wrote:
> 
> > The Allwinner A10 and subsequent SoCs share the same display pipeline, with
> > variations in the number of controllers (1 or 2), or the presence or not of
> > some output (HDMI, TV, VGA) or not.
> > 
> > Add a driver with a limited set of features for now, and we will hopefully
> > support all of them eventually
> > 
> > Signed-off-by: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> 
> Just 2 comments below. Once addressed you can add my
> 
> Reviewed-by: Boris Brezillon <boris.brezillon-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
> 
> > ---
> 
> [...]
> 
> > +
> > +static int sun4i_drv_connector_plug_all(struct drm_device *drm)
> > +{
> > +	struct drm_connector *connector, *failed;
> > +	int ret;
> > +
> > +	mutex_lock(&drm->mode_config.mutex);
> > +	list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
> > +		ret = drm_connector_register(connector);
> > +		if (ret) {
> > +			failed = connector;
> > +			goto err;
> > +		}
> > +	}
> > +	mutex_unlock(&drm->mode_config.mutex);
> > +	return 0;
> > +
> > +err:
> > +	list_for_each_entry(connector, &drm->mode_config.connector_list, head) {
> > +		if (failed == connector)
> > +			break;
> > +
> > +		drm_connector_unregister(connector);
> > +	}
> > +	mutex_unlock(&drm->mode_config.mutex);
> > +
> > +	return ret;
> > +}
> 
> You can use the generic drm_connector_register_all() to do that.
> 
> [...]
> 
> > +
> > +static void sun4i_drv_unbind(struct device *dev)
> > +{
> > +	struct drm_device *drm = dev_get_drvdata(dev);
> > +
> 
> And you probably miss a call to drm_connector_unregister_all() here.

Thanks, I'll fix that.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com