Messages in this thread | | | From | Måns Rullgård <> | Subject | Re: [PATCH 2/2] usb: hub: use non-removable-ports DT property | Date | Mon, 18 Mar 2019 14:38:57 +0000 |
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Mans Rullgard <mans@mansr.com> writes:
> 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@mansr.com> > --- > drivers/usb/core/hub.c | 14 ++++++++++++++ > 1 file changed, 14 insertions(+)
Any comments on these patches?
> diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c > index 3adff4da2ee1..44ac49a30be1 100644 > --- a/drivers/usb/core/hub.c > +++ b/drivers/usb/core/hub.c > @@ -1328,6 +1328,9 @@ 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) { > @@ -1629,6 +1632,17 @@ 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, "port number %u out of range\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); > -- > 2.20.1 >
-- Måns Rullgård
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