linux-kernel - Re: [PATCH v2 06/17] powerpc/powernv: Split out set MSI IRQ chip code

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Date:	Thu,  2 Oct 2014 11:57:29 +1000 (EST)
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Michael Neuling <mikey@...ling.org>, greg@...ah.com, arnd@...db.de,
	benh@...nel.crashing.org
Cc:	mikey@...ling.org, anton@...ba.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, jk@...abs.org, imunsie@...ibm.com,
	cbe-oss-dev@...ts.ozlabs.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: [PATCH v2 06/17] powerpc/powernv: Split out set MSI IRQ chip code

On Tue, 2014-30-09 at 10:34:55 UTC, Michael Neuling wrote:
> From: Ian Munsie <imunsie@....ibm.com>
> 
> Some of the MSI IRQ code in pnv_pci_ioda_msi_setup() is generically useful so
> split it out.
> 
> This will be used by some of the cxl PCIe code later.
> 
> diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c
> index df241b1..329164f 100644
> --- a/arch/powerpc/platforms/powernv/pci-ioda.c
> +++ b/arch/powerpc/platforms/powernv/pci-ioda.c
> @@ -1306,14 +1306,36 @@ static void pnv_ioda2_msi_eoi(struct irq_data *d)
>  	icp_native_eoi(d);
>  }
>  
> +
> +static void set_msi_irq_chip(struct pnv_phb *phb, unsigned int virq)
> +{
> +	struct irq_data *idata;
> +	struct irq_chip *ichip;
> +
> +	if (phb->type != PNV_PHB_IODA2)
> +		return;
> +
> +	/*
> +	 * Change the IRQ chip for the MSI interrupts on PHB3.
> +	 * The corresponding IRQ chip should be populated for
> +	 * the first time.

Seeing as you're moving this comment can you clarify the wording.


cheers
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