On Mon, Nov 11, 2019 at 09:53:01AM -0700, Jon Derrick wrote:
> VMD bus restrictions are required when IO fabric is multiplexed such
> that VMD cannot use the entire bus range. This patch adds another bus
> restriction decode bit that can be set by firmware to restrict the VMD
> bus range from 224-255.
The code suggests that such a device is restricted *to* that range,
not from it.
> + switch (BUS_RESTRICT_CFG(reg16)) {
> + case(1):
> + vmd->busn_start = 128;
> + break;
> + case(2):
> + vmd->busn_start = 224;
> + break;
> + case(3):
> + pci_err(vmd->dev, "Unknown Bus Offset Setting\n");
> + return -ENODEV;
> + default:
> + break;
> + }
Just a nit for consistent sytle, every other switch case looks like:
case 1:
...
case 2:
...
case 3:
...
