linux-kernel - Re: [PATCH v2] irqchip/armada-370-xp: Enable MSI-X support

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Date:   Fri, 18 Aug 2017 14:29:35 +0100
From:   Marc Zyngier <marc.zyngier@....com>
To:     Stefan Roese <sr@...x.de>, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Jason Cooper <jason@...edaemon.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Gregory CLEMENT <gregory.clement@...e-electrons.com>
Subject: Re: [PATCH v2] irqchip/armada-370-xp: Enable MSI-X support

On 18/08/17 13:59, Stefan Roese wrote:
> Armada XP does not only support MSI, but also MSI-X. This patch sets
> the MSI_FLAG_PCI_MSIX flag in the interrupt controller driver which
> is the only change necessary to enable MSI-X support on this SoC. As
> the Linux PCI MSI-X infrastructure takes care of writing the data and
> address structures into the BAR specified by the MSI-X controller.
> 
> Signed-off-by: Stefan Roese <sr@...x.de>
> Reviewed-by: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
> Cc: Marc Zyngier <marc.zyngier@....com>
> Cc: Jason Cooper <jason@...edaemon.net>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Bjorn Helgaas <bhelgaas@...gle.com>
> Cc: Gregory CLEMENT <gregory.clement@...e-electrons.com>
> ---
> v2:
> - Added Reviewed-by tag from Thomas
> - Added usual irqchip maintainers
> 
>  drivers/irqchip/irq-armada-370-xp.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
> index 33982cbd8a57..b17039ed8735 100644
> --- a/drivers/irqchip/irq-armada-370-xp.c
> +++ b/drivers/irqchip/irq-armada-370-xp.c
> @@ -124,7 +124,7 @@ static struct irq_chip armada_370_xp_msi_irq_chip = {
>  
>  static struct msi_domain_info armada_370_xp_msi_domain_info = {
>  	.flags	= (MSI_FLAG_USE_DEF_DOM_OPS | MSI_FLAG_USE_DEF_CHIP_OPS |
> -		   MSI_FLAG_MULTI_PCI_MSI),
> +		   MSI_FLAG_MULTI_PCI_MSI | MSI_FLAG_PCI_MSIX),
>  	.chip	= &armada_370_xp_msi_irq_chip,
>  };
>  
> 

Queued for 4.14.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...