linux-kernel - Re: [PATCH V2 7/9] interconnect: imx: set of

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Message-ID: <3c773637f626877832041d3065f387261ba70816.camel@pengutronix.de>
Date:   Wed, 29 Jun 2022 17:08:58 +0200
From:   Lucas Stach <l.stach@...gutronix.de>
To:     "Peng Fan (OSS)" <peng.fan@....nxp.com>, djakov@...nel.org,
        shawnguo@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        abel.vesa@....com, abailon@...libre.com,
        laurent.pinchart@...asonboard.com, marex@...x.de,
        paul.elder@...asonboard.com, Markus.Niebel@...tq-group.com,
        aford173@...il.com
Cc:     kernel@...gutronix.de, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        abelvesa@...nel.org, Peng Fan <peng.fan@....com>
Subject: Re: [PATCH V2 7/9] interconnect: imx: set of_node for interconnect
 provider

Am Donnerstag, dem 16.06.2022 um 15:33 +0800 schrieb Peng Fan (OSS):
> From: Peng Fan <peng.fan@....com>
> 
> 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@....com>
> ---
>  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;
>  	platform_set_drvdata(pdev, imx_provider);
>  
>  	ret = icc_provider_add(provider);