linux-kernel - Re: [PATCH v5 13/14] irqchip: mbigen: introduce mbigen_of_create

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Message-ID: <5860DBFF.7080109@huawei.com>
Date:   Mon, 26 Dec 2016 16:59:43 +0800
From:   "majun (Euler7)" <majun258@...wei.com>
To:     Hanjun Guo <guohanjun@...wei.com>,
        Marc Zyngier <marc.zyngier@....com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     <majun258@...wei.com>, <linux-acpi@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg KH <gregkh@...uxfoundation.org>,
        Tomasz Nowicki <tn@...ihalf.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Agustin Vega-Frias <agustinv@...eaurora.org>,
        Sinan Kaya <okaya@...eaurora.org>,
        Charles Garcia-Tobin <charles.garcia-tobin@....com>,
        <huxinwei@...wei.com>, <yimin@...wei.com>, <linuxarm@...wei.com>,
        <jcm@...hat.com>, Hanjun Guo <hanjun.guo@...aro.org>
Subject: Re: [PATCH v5 13/14] irqchip: mbigen: introduce
 mbigen_of_create_domain()

Hi hanjun：

在 2016/12/22 13:35, Hanjun Guo 写道:
> From: Kefeng Wang <wangkefeng.wang@...wei.com>
> 
> Introduce mbigen_of_create_domain() to consolidate OF related
> code and prepare for ACPI later, no funtional change.
> 
> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
> Signed-off-by: Hanjun Guo <hanjun.guo@...aro.org>
> Cc: Marc Zyngier <marc.zyngier@....com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ma Jun <majun258@...wei.com>
> ---
>  drivers/irqchip/irq-mbigen.c | 42 +++++++++++++++++++++++++++---------------
>  1 file changed, 27 insertions(+), 15 deletions(-)
> 
> diff --git a/drivers/irqchip/irq-mbigen.c b/drivers/irqchip/irq-mbigen.c
> index c01ab41..4e11da5 100644
> --- a/drivers/irqchip/irq-mbigen.c
> +++ b/drivers/irqchip/irq-mbigen.c
> @@ -236,27 +236,15 @@ static int mbigen_irq_domain_alloc(struct irq_domain *domain,
>  	.free		= irq_domain_free_irqs_common,
>  };
>  
> -static int mbigen_device_probe(struct platform_device *pdev)
> +static int mbigen_of_create_domain(struct platform_device *pdev,
> +				   struct mbigen_device *mgn_chip)
>  {
> -	struct mbigen_device *mgn_chip;
> +	struct device *parent;
>  	struct platform_device *child;
>  	struct irq_domain *domain;
>  	struct device_node *np;
> -	struct device *parent;
> -	struct resource *res;
>  	u32 num_pins;
>  
> -	mgn_chip = devm_kzalloc(&pdev->dev, sizeof(*mgn_chip), GFP_KERNEL);
> -	if (!mgn_chip)
> -		return -ENOMEM;
> -
> -	mgn_chip->pdev = pdev;
> -
> -	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> -	mgn_chip->base = devm_ioremap_resource(&pdev->dev, res);
> -	if (IS_ERR(mgn_chip->base))
> -		return PTR_ERR(mgn_chip->base);
> -
>  	for_each_child_of_node(pdev->dev.of_node, np) {
>  		if (!of_property_read_bool(np, "interrupt-controller"))
>  			continue;
> @@ -280,6 +268,30 @@ static int mbigen_device_probe(struct platform_device *pdev)
>  			return -ENOMEM;
>  	}
>  
> +	return 0;
> +}
> +
> +static int mbigen_device_probe(struct platform_device *pdev)
> +{
> +	struct mbigen_device *mgn_chip;
> +	struct resource *res;
> +	int err;
> +
> +	mgn_chip = devm_kzalloc(&pdev->dev, sizeof(*mgn_chip), GFP_KERNEL);
> +	if (!mgn_chip)
> +		return -ENOMEM;
> +
> +	mgn_chip->pdev = pdev;
> +
> +	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	mgn_chip->base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
> +	if (IS_ERR(mgn_chip->base))
> +		return PTR_ERR(mgn_chip->base);
> +
> +	err = mbigen_of_create_domain(pdev, mgn_chip);
> +	if (err)
> +		return err;
> +
>  	platform_set_drvdata(pdev, mgn_chip);
>  	return 0;
>  }
> 
Reviewed-by: MaJun <majun258@...wei.com>