On Wed, 3 Jan 2018, Lorenzo Pieralisi wrote:
> On Tue, Jan 02, 2018 at 04:32:45PM -0500, Mikulas Patocka wrote:
> > Hi
> >
> > The patch 0e4c2eeb758a91e68b9eaf7a4bee9bd5ed97ff2b ("alpha/PCI: Replace
> > pci_fixup_irqs() call with host bridge IRQ mapping hooks") breaks
> > networking on Alpha for me. I have an Alpha Avanti server with tulip
> > network card.
> >
> > The patch 0e4c2eeb breaks it so that I get MCE when the network card
> > driver is loaded. The patch 814eae59 fixes the MCE, the system boot
> > completes, but the network card doesn't receive any interrupts (and soon
> > it reports warning about timeout on tx queue). All kernels in the 4.14
> > branch have this bug.
>
> Can you check if this patch fixes the issue please ?
>
> I suspect we ought to map IRQs early in this platform so that we are
> able to detect how platform code should set them up.
>
> Thanks,
> Lorenzo
>
> -- >8 --
> diff --git a/arch/alpha/kernel/sys_sio.c b/arch/alpha/kernel/sys_sio.c
> index 37bd6d9b8eb9..407ab603e9b1 100644
> --- a/arch/alpha/kernel/sys_sio.c
> +++ b/arch/alpha/kernel/sys_sio.c
> @@ -114,6 +114,8 @@ sio_collect_irq_levels(void)
> (dev->class >> 8 != PCI_CLASS_BRIDGE_PCMCIA))
> continue;
>
> + pci_assign_irq(dev);
> +
> if (dev->irq)
> level_bits |= (1 << dev->irq);
> }
This patch fixes the bug.
Mikulas
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