On Fri, Jan 24, 2020 at 03:25:04PM +0000, Mans Rullgard wrote:
> Mark any ports listed in the non-removable-ports DT property as
> hardwired. This is useful for boards with built-in USB devices
> that cannot be (or have not been) marked as fixed in hardware.
>
> Signed-off-by: Mans Rullgard <mans@xxxxxxxxx>
> ---
> drivers/usb/core/hub.c | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
> index 4ac74b354801..97f8f15fb632 100644
> --- a/drivers/usb/core/hub.c
> +++ b/drivers/usb/core/hub.c
> @@ -1366,6 +1366,9 @@ static int hub_configure(struct usb_hub *hub,
> unsigned unit_load;
> unsigned full_load;
> unsigned maxchild;
> + struct property *prop;
> + const __be32 *cur;
> + u32 val;
>
> hub->buffer = kmalloc(sizeof(*hub->buffer), GFP_KERNEL);
> if (!hub->buffer) {
> @@ -1667,6 +1670,19 @@ static int hub_configure(struct usb_hub *hub,
> }
> }
>
> + of_property_for_each_u32(hub_dev->of_node, "non-removable-ports",
> + prop, cur, val) {
> + if (val < 1 || val > hdev->maxchild) {
> + dev_warn(hub_dev,
> + "bad port number %u in non-removable-ports\n",
> + val);
> + continue;
> + }
> +
> + hub->ports[val - 1]->connect_type =
> + USB_PORT_CONNECT_TYPE_HARD_WIRED;
> + }
> +
Is this doing the same thing that ACPI does? It doesn't seem like it,
why not do this in usb_hub_adjust_deviceremovable()? Or wherever ACPI
does this...
thanks,
greg k-h
