Re: [PATCH V2 7/9] interconnect: imx: set of_node for interconnect provider

[Laurent Pinchart]

On Wed, Jun 29, 2022 at 05:08:58PM +0200, Lucas Stach wrote:
> Am Donnerstag, dem 16.06.2022 um 15:33 +0800 schrieb Peng Fan (OSS):
> > From: Peng Fan <peng.fan@xxxxxxx>
> > 
> > The provider device is created using platform_device_register_data in
> > imx-bus driver, which not has of_node. With of_node set, it will be
> > easy to support QoS settings.
> > 
> That's a bit dangerous, as sharing a of_node between two devices can
> lead to some reference counting issues IIRC, but then I also don't see
> a good way to do this any differently.
> 
> Regards,
> Lucas
> 
> > Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
> > ---
> >  drivers/interconnect/imx/imx.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/drivers/interconnect/imx/imx.c b/drivers/interconnect/imx/imx.c
> > index 1f16eedea21c..78557fe6da2c 100644
> > --- a/drivers/interconnect/imx/imx.c
> > +++ b/drivers/interconnect/imx/imx.c
> > @@ -264,6 +264,7 @@ int imx_icc_register(struct platform_device *pdev,
> >  	provider->xlate = of_icc_xlate_onecell;
> >  	provider->data = data;
> >  	provider->dev = dev->parent;
> > +	provider->dev->of_node = dev->parent->of_node;

Due to the previous line, provider->dev is equal to dev->parent, so
doesn't this essentially do

	dev->parent->of_node = dev->parent->of_node;

which is a no-op ?

> >  	platform_set_drvdata(pdev, imx_provider);
> >  
> >  	ret = icc_provider_add(provider);

-- 
Regards,

Laurent Pinchart