linux-kernel - RE: [PATCH 3/4] PCI: Xilinx NWL: Modifying flow handler for legacy interrupts

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Message-ID: <8520D5D51A55D047800579B094147198263CD002@XAP-PVEXMBX02.xlnx.xilinx.com>
Date:   Tue, 24 Jan 2017 10:25:00 +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 3/4] PCI: Xilinx NWL: Modifying flow handler for legacy
 interrupts

> On 21/01/17 11:11, Bharat Kumar Gogada wrote:
> > Legacy interrupts are level sensitive, so using handle_level_irq is
> > more approprate as it is masks interrupts until End point handles
> > interrupts and unmasks interrutps after End point handler is executed.
> >
> > Signed-off-by: Bharat Kumar Gogada <bharatku@...inx.com>
> > ---
> >  drivers/pci/host/pcie-xilinx-nwl.c |    2 +-
> >  1 files changed, 1 insertions(+), 1 deletions(-)
> >
> > diff --git a/drivers/pci/host/pcie-xilinx-nwl.c
> > b/drivers/pci/host/pcie-xilinx-nwl.c
> > index e1809f9..50f9c0d 100644
> > --- a/drivers/pci/host/pcie-xilinx-nwl.c
> > +++ b/drivers/pci/host/pcie-xilinx-nwl.c
> > @@ -433,7 +433,7 @@ static void nwl_unmask_leg_irq(struct irq_data
> > *data)  static int nwl_legacy_map(struct irq_domain *domain, unsigned int irq,
> >  			  irq_hw_number_t hwirq)
> >  {
> > -	irq_set_chip_and_handler(irq, &nwl_leg_irq_chip, handle_simple_irq);
> > +	irq_set_chip_and_handler(irq, &nwl_leg_irq_chip, handle_level_irq);
> >  	irq_set_chip_data(irq, domain->host_data);
> >
> >  	return 0;
> >
> 
> Please merge this patch and the following one in patch #2. There is no need for
> going through equally broken intermediate steps.
> 
Agreed, will merge it with second patch. 

Thanks & Regards,
Bharat