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

From: Marc Zyngier
Date: Wed Jan 25 2017 - 04:24:30 EST


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@xxxxxxxxxx>
> ---
> 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.

Thanks,

M.

[1] http://www.mail-archive.com/linux-kernel@xxxxxxxxxxxxxxx/msg1316912.html
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