linux-kernel - Re: [PATCH v2 2/3] PCI/MSI/Armada-370-xp: Remove arch_msi_check

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Date:	Mon, 15 Sep 2014 09:36:37 +0100
From:	Alexander Gordeev <agordeev@...hat.com>
To:	Jason Cooper <jason@...edaemon.net>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>
Cc:	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH v2 2/3] PCI/MSI/Armada-370-xp: Remove
 arch_msi_check_device()

On Mon, Sep 08, 2014 at 07:16:56AM -0400, Jason Cooper wrote:
> + free-electron's guys.

Hi Gentlemen,

Any feedback on this patch?

Thanks!

> On Sun, Sep 07, 2014 at 08:57:54PM +0200, Alexander Gordeev wrote:
> > Moving MSI checks from arch_msi_check_device() function to
> > arch_setup_msi_irqs() function makes code more compact and
> > allows removing unnecessary hook arch_msi_check_device()
> > from generic MSI code.
> > 
> > Cc: Thomas Gleixner <tglx@...utronix.de>
> > Cc: Jason Cooper <jason@...edaemon.net>
> > Cc: linux-pci@...r.kernel.org
> > Signed-off-by: Alexander Gordeev <agordeev@...hat.com>
> > ---
> >  drivers/irqchip/irq-armada-370-xp.c | 14 ++++----------
> >  1 file changed, 4 insertions(+), 10 deletions(-)
> > 
> > diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
> > index 574aba0..df60eab 100644
> > --- a/drivers/irqchip/irq-armada-370-xp.c
> > +++ b/drivers/irqchip/irq-armada-370-xp.c
> > @@ -136,6 +136,10 @@ static int armada_370_xp_setup_msi_irq(struct msi_chip *chip,
> >  	struct msi_msg msg;
> >  	int virq, hwirq;
> >  
> > +	/* We support MSI, but not MSI-X */
> > +	if (desc->msi_attrib.is_msix)
> > +		return -EINVAL;
> > +
> >  	hwirq = armada_370_xp_alloc_msi();
> >  	if (hwirq < 0)
> >  		return hwirq;
> > @@ -166,15 +170,6 @@ static void armada_370_xp_teardown_msi_irq(struct msi_chip *chip,
> >  	armada_370_xp_free_msi(hwirq);
> >  }
> >  
> > -static int armada_370_xp_check_msi_device(struct msi_chip *chip, struct pci_dev *dev,
> > -					  int nvec, int type)
> > -{
> > -	/* We support MSI, but not MSI-X */
> > -	if (type == PCI_CAP_ID_MSI)
> > -		return 0;
> > -	return -EINVAL;
> > -}
> > -
> >  static struct irq_chip armada_370_xp_msi_irq_chip = {
> >  	.name = "armada_370_xp_msi_irq",
> >  	.irq_enable = unmask_msi_irq,
> > @@ -213,7 +208,6 @@ static int armada_370_xp_msi_init(struct device_node *node,
> >  
> >  	msi_chip->setup_irq = armada_370_xp_setup_msi_irq;
> >  	msi_chip->teardown_irq = armada_370_xp_teardown_msi_irq;
> > -	msi_chip->check_device = armada_370_xp_check_msi_device;
> >  	msi_chip->of_node = node;
> >  
> >  	armada_370_xp_msi_domain =
> > -- 
> > 1.9.3
> > 

-- 
Regards,
Alexander Gordeev
agordeev@...hat.com
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