13/12/2020 15:16, Tal Shnaiderman:
> On older processors, NUMA isn't bound to PCIe locality.
> those cases return ERROR_NOT_FOUND in response to the
> SetupDiGetDevicePropertyW call with DEVPKEY_Device_Numa_Node
> attribute.
>
> This error fails the probe process for the PCIe device.
> this commit will ignore such failure and will set the
> numa_node to 0.
>
> Fixes: b762221ac24f ("bus/pci: support Windows with bifurcated drivers")
> Cc: [email protected]
>
> Reported-by: Odi Assli <[email protected]>
> Signed-off-by: Tal Shnaiderman <[email protected]>
> ---
> --- a/drivers/bus/pci/windows/pci.c
> +++ b/drivers/bus/pci/windows/pci.c
> @@ -234,6 +234,15 @@ get_device_resource_info(HDEVINFO dev_info,
> &DEVPKEY_Device_Numa_Node, &property_type,
> (BYTE *)&numa_node, sizeof(numa_node), NULL, 0);
> if (!res) {
> + DWORD error = GetLastError();
> + if (error == ERROR_NOT_FOUND) {
> + /* On older CPUs, NUMA isn't bound to PCIe locality
> + * We do not want to fail the probing process
> + * Setting 0 for numa_node and returnng ERROR_SUCCESS.
> + */
The last 2 lines of comment are rephrasing the 2 lines of code below,
so it can be removed.
> + dev->device.numa_node = 0;
> + return ERROR_SUCCESS;
> + }
Applied with smaller comment, thanks.
