Re: pci_intr_alloc() vs pci_intr_establish() - retry type?

[Jared McNeill <jmcneill%invisible.ca@localhost>]

On Fri, 30 Nov 2018, Martin Husemann wrote:

> On Fri, Nov 30, 2018 at 02:22:37PM -0400, Jared McNeill wrote:
> > The driver can call pci_intr_type on the handle returned by pci_intr_alloc
> > to see what kind of interrupt (INTx/MSI/MSI-X) was negotiated.
>
> Yeah, but the fear was that some hardware could either do a single INT
> or (lots of) MSI{X}, and now you end up with (lots of) INT returned
> from pci_intr_alloc() and can just use the first.
>
> Does this not happen for real world hardware, or is the driver supposed to
> check with pci_*_count() upfront?

I don't think pci_intr_alloc will ever return more than one INTx..