linux-kernel - Re: [PATCH v4 5/7] PCI: irqdomain: Look up IRQ domain by fwnode

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Message-ID: <CAHp75Vd=najBY7MJofStyLODWuG45=VzwLoWCSrQRm0nemuD4A@mail.gmail.com>
Date:	Fri, 30 Oct 2015 02:28:22 +0200
From:	Andy Shevchenko <andy.shevchenko@...il.com>
To:	jakeo@...rosoft.com
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>, kys@...rosoft.com,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	devel@...uxdriverproject.org, olaf@...fle.de, apw@...onical.com,
	Vitaly Kuznetsov <vkuznets@...hat.com>, tglx@...hat.com,
	haiyangz@...rosoft.com, marc.zyngier@....com,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: Re: [PATCH v4 5/7] PCI: irqdomain: Look up IRQ domain by fwnode_handle

On Fri, Oct 30, 2015 at 1:46 AM,  <jakeo@...rosoft.com> wrote:
> From: Jake Oshins <jakeo@...rosoft.com>
>
> This patch adds a second way of finding an IRQ domain associated with
> a root PCI bus.  After looking to see if one can be found through
> the OF tree, it attempts to look up the IRQ domain through an
> fwnode_handle stored in the pci_sysdata struct.


> +#ifdef CONFIG_PCI_MSI_IRQ_DOMAIN
> +       /*
> +        * If no IRQ domain was found via the OF tree, try looking it up
> +        * directly through the fwnode_handle.
> +        */
> +       if (!d) {
> +               if (pci_fwnode(bus)) {

Isn't it the same to
if (!d && pci_fwnode(bus))
 d = ...

?

> +                       d = irq_find_matching_fwnode(pci_fwnode(bus),
> +                                                    DOMAIN_BUS_PCI_MSI);
> +               }
> +       }
> +#endif


-- 
With Best Regards,
Andy Shevchenko
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