linux-kernel - Re: [PATCH 1/2] phy: core: Fix of_phy_provider_lookup to return PHY provider for sub node

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Message-ID: <20140714113313.GM2954@lee--X1>
Date:	Mon, 14 Jul 2014 12:33:13 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Kishon Vijay Abraham I <kishon@...com>
Cc:	linux-kernel@...r.kernel.org, sergei.shtylyov@...entembedded.com,
	antoine.tenart@...e-electrons.com, gregkh@...uxfoundation.org
Subject: Re: [PATCH 1/2] phy: core: Fix of_phy_provider_lookup to return PHY
 provider for sub node

On Mon, 14 Jul 2014, Kishon Vijay Abraham I wrote:

> Fixed of_phy_provider_lookup to return 'phy_provider' if _of_phy_get
> passes the node pointer of the sub-node of phy provider node. This is
> needed when phy provider implements multiple PHYs and each PHY is
> modelled as the sub-node of PHY provider device node.
> 
> Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> Signed-off-by: Lee Jones <lee.jones@...aro.org>

This should be an Acked-by, but otherwise patch looks good.

> ---
>  drivers/phy/phy-core.c |    5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/phy/phy-core.c b/drivers/phy/phy-core.c
> index 75c9739..527e744 100644
> --- a/drivers/phy/phy-core.c
> +++ b/drivers/phy/phy-core.c
> @@ -87,10 +87,15 @@ static struct phy *phy_lookup(struct device *device, const char *port)
>  static struct phy_provider *of_phy_provider_lookup(struct device_node *node)
>  {
>  	struct phy_provider *phy_provider;
> +	struct device_node *child;
>  
>  	list_for_each_entry(phy_provider, &phy_provider_list, list) {
>  		if (phy_provider->dev->of_node == node)
>  			return phy_provider;
> +
> +		for_each_child_of_node(phy_provider->dev->of_node, child)
> +			if (child == node)
> +				return phy_provider;
>  	}
>  
>  	return ERR_PTR(-EPROBE_DEFER);

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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