linux-kernel - Re: [PATCH v4 19/19] PCI/MSI: Drop domain field from msi

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Message-ID: <20150721213704.GC3691@google.com>
Date:	Tue, 21 Jul 2015 16:37:04 -0500
From:	Bjorn Helgaas <bhelgaas@...gle.com>
To:	Marc Zyngier <marc.zyngier@....com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Jason Cooper <jason@...edaemon.net>,
	linux-arm-kernel@...ts.infradead.org, linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org, Yijing Wang <wangyijing@...wei.com>,
	Ma Jun <majun258@...wei.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Duc Dang <dhdang@....com>
Subject: Re: [PATCH v4 19/19] PCI/MSI: Drop domain field from msi_controller

On Wed, Jul 15, 2015 at 01:16:53PM +0100, Marc Zyngier wrote:
> The only three users of that field are not using the msi_controller
> structure anymore, so drop it altogether.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier@....com>

Acked-by: Bjorn Helgaas <bhelgaas@...gle.com>

> ---
>  drivers/pci/msi.c   | 2 --
>  include/linux/msi.h | 3 ---
>  2 files changed, 5 deletions(-)
> 
> diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
> index c77fdaf..31bae50 100644
> --- a/drivers/pci/msi.c
> +++ b/drivers/pci/msi.c
> @@ -42,8 +42,6 @@ static struct irq_domain *pci_msi_get_domain(struct pci_dev *dev)
>  	struct irq_domain *domain = NULL;
>  
>  	domain = dev_get_msi_domain(&dev->dev);
> -	if (!domain && dev->bus->msi)
> -		domain = dev->bus->msi->domain;
>  	if (!domain)
>  		domain = arch_get_pci_msi_domain(dev);

I guess this takes care of the "assignment inside if" question :)

> diff --git a/include/linux/msi.h b/include/linux/msi.h
> index b55cf63..e29c31f 100644
> --- a/include/linux/msi.h
> +++ b/include/linux/msi.h
> @@ -124,9 +124,6 @@ struct msi_controller {
>  	struct device *dev;
>  	struct device_node *of_node;
>  	struct list_head list;
> -#ifdef CONFIG_GENERIC_MSI_IRQ_DOMAIN
> -	struct irq_domain *domain;
> -#endif
>  
>  	int (*setup_irq)(struct msi_controller *chip, struct pci_dev *dev,
>  			 struct msi_desc *desc);
> -- 
> 2.1.4
> 
> --
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