linux-kernel - RE: [PATCH v2 2/2] PCI: Xilinx NWL: Fix, proc interrupts for legacy virtual irq shown as edge

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Date:   Mon, 30 Jan 2017 05:57:23 +0000
From:   Bharat Kumar Gogada <bharat.kumar.gogada@...inx.com>
To:     Marc Zyngier <marc.zyngier@....com>,
        "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
        "paul.gortmaker@...driver.com" <paul.gortmaker@...driver.com>,
        "robh@...nel.org" <robh@...nel.org>,
        "colin.king@...onical.com" <colin.king@...onical.com>,
        "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
CC:     "michal.simek@...inx.com" <michal.simek@...inx.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Ravikiran Gummaluri <rgummal@...inx.com>,
        "arnd@...db.de" <arnd@...db.de>
Subject: RE: [PATCH v2 2/2] PCI: Xilinx NWL: Fix, proc interrupts for legacy
 virtual irq shown as edge

> 
> On 25/01/17 08:52, Bharat Kumar Gogada wrote:
> > - Legacy interrupts are level triggered, virtual irq line of End Point
> > shows as edge in /proc/interrupts.
> > - Setting irq flags of virtual irq line of EP to level triggered at
> > the time of mapping.
> >
> > Signed-off-by: Bharat Kumar Gogada <bharatku@...inx.com>
> > ---
> >  drivers/pci/host/pcie-xilinx-nwl.c | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/drivers/pci/host/pcie-xilinx-nwl.c
> > b/drivers/pci/host/pcie-xilinx-nwl.c
> > index 6ac3e1d..1cddd1f 100644
> > --- a/drivers/pci/host/pcie-xilinx-nwl.c
> > +++ b/drivers/pci/host/pcie-xilinx-nwl.c
> > @@ -434,6 +434,7 @@ static int nwl_legacy_map(struct irq_domain
> > *domain, unsigned int irq,  {
> >  	irq_set_chip_and_handler(irq, &nwl_leg_irq_chip, handle_level_irq);
> >  	irq_set_chip_data(irq, domain->host_data);
> > +	irq_set_status_flags(irq, IRQ_LEVEL);
> >
> >  	return 0;
> >  }
> >
> 
> As said in my previous review [1], this should be folded in the previous patch, as
> it doesn't make much sense on its own.
> 
Agreed, will send in same previous patch. 

bharat