> Very clever. Does this simpler patch also fix the problem?
Yes it does, thanks.
Tested-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
---
>
> Index: usb-2.6/drivers/usb/serial/usb-serial.c
> ===================================================================
> --- usb-2.6.orig/drivers/usb/serial/usb-serial.c
> +++ usb-2.6/drivers/usb/serial/usb-serial.c
> @@ -974,6 +974,7 @@ int usb_serial_probe(struct usb_interfac
> if (retval > 0) {
> /* quietly accept this device, but don't bind to a
> serial port as it's about to disappear */
> + serial->num_ports = 0;
> goto exit;
> }
> }
>
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