On Mon, 25 Oct 2010, Randy Dunlap wrote:
> kerne log excerpt:
>
> [ 3.447156] usb 3-1: usb_probe_device
> [ 3.447171] usb 3-1: configuration #1 chosen from 1 choice
> [ 3.453362] usb 3-1: adding 3-1:1.0 (config #1, interface 0)
> [ 3.455550] hub 3-1:1.0: usb_probe_interface
> [ 3.455557] hub 3-1:1.0: usb_probe_interface - got id
> [ 3.455562] hub 3-1:1.0: ignoring external hub
>
>
> hub.c says:
>
> #ifdef CONFIG_USB_OTG_BLACKLIST_HUB
> if (hdev->parent) {
> dev_warn(&intf->dev, "ignoring external hub\n");
> return -ENODEV;
> }
> #endif
>
>
> Hm, I don't have any OTG devices, just a fairly old Dell keyboard with
> embedded hub ... and now they don't work.
> Yes, I have the kconfig symbol enabled, but why is this applying to
> a hub inside a keyboard?
In this context OTG doesn't refer to devices; it refers to your
computer. By enabling it, you have told the kernel that your computer
is OTG, implying that it need not support external hubs.
> help? other than disabling that kconfig?
Just disable it.
Alan Stern
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