On Wed, Jan 11, 2023 at 11:16:32AM +0800, Baolu Lu wrote:
> On 2023/1/10 21:25, Jason Gunthorpe wrote:
> > > + } else {
> > > + if (!pdev->bus->self ||
> > > + !pci_acs_path_enabled(pdev->bus->self, NULL,
> > > + PCI_ACS_RR | PCI_ACS_UF))
> > > + return -EINVAL;
> > > + }
> > Why would these be exclusive? Both the path and endpoint needs to be
> > checked
>
> If the device is not an MFD, do we still need to check the ACS on it?
> Perhaps I didn't get your point correctly.
It always needs to check the path
Jason
