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SubjectRe: [PATCH v3] xen-pciback: optionally allow interrupt enable flag writes
On Mon, Jan 13, 2020 at 04:25:02PM -0500, Boris Ostrovsky wrote:
>
>
> On 1/10/20 10:43 PM, Marek Marczykowski-Górecki wrote:
> > @@ -117,6 +117,24 @@ static int command_write(struct pci_dev *dev, int offset, u16 value, void *data)
> > pci_clear_mwi(dev);
> > }
> > + if (dev_data && dev_data->allow_interrupt_control) {
> > + if ((cmd->val ^ val) & PCI_COMMAND_INTX_DISABLE) {
> > + if (value & PCI_COMMAND_INTX_DISABLE) {
> > + pci_intx(dev, 0);
> > + } else {
> > + /* Do not allow enabling INTx together with MSI or MSI-X. */
> > + switch (xen_pcibk_get_interrupt_type(dev)) {
> > + case INTERRUPT_TYPE_NONE:
> > + case INTERRUPT_TYPE_INTX:
> > + pci_intx(dev, 1);
>
> If INTERRUPT_TYPE_INTX , why call pci_intx(1)?

Not needed indeed.

>
> (I think I asked this last time as well).
>
>
> -boris
>
>

--
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
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