linux-kernel - Re: [Patch V3 6/9] genirq: Introduce msi_domain_{alloc|free}

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Message-ID: <alpine.DEB.2.11.1411171230090.3909@nanos>
Date:	Mon, 17 Nov 2014 12:30:34 +0100 (CET)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Ingo Molnar <mingo@...hat.com>,
	Grant Likely <grant.likely@...aro.org>,
	Marc Zyngier <marc.zyngier@....com>,
	Yijing Wang <wangyijing@...wei.com>,
	Yingjoe Chen <yingjoe.chen@...iatek.com>,
	Borislav Petkov <bp@...en8.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Alexander Gordeev <agordeev@...hat.com>,
	Tony Luck <tony.luck@...el.com>, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [Patch V3 6/9] genirq: Introduce
 msi_domain_{alloc|free}_irqs()

On Mon, 17 Nov 2014, Jiang Liu wrote:
> +
> +/*
> + * Default structure for MSI interrupt allocation.
> + * Arch may overwrite it by defining msi_alloc_info_t.
> + */
> +struct msi_alloc_info {
> +	struct msi_desc			*desc;
> +	irq_hw_number_t			hwirq;
> +	union {
> +		unsigned long		ul;
> +		void			*ptr;
> +	} scratchpad[NUM_MSI_ALLOC_SCRATCHPAD_REGS];
> +};
> +
> +#ifndef msi_alloc_info_t
> +typedef struct msi_alloc_info msi_alloc_info_t;
> +#endif

Hmm. Do we really need that?

Thanks,

	tglx
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