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;
+ }
+
usb_hub_adjust_deviceremovable(hdev, hub->descriptor);
hub_activate(hub, HUB_INIT);
--
2.25.0
