Re: [PATCH v2 2/4] usb: common: Move u_serial from gadget/function to usb/common

[Felipe Balbi]

Hi,

Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> writes:
>> Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> writes:
>>> The component u_serial provides a glue layer between TTY layer
>>> and a USB gadget device needed to provide a basic serial port
>>> functionality. Currently, u_serial sits under gadget/function
>>> and depends on CONFIG_USB_GADGET to be compiled and used.
>>>
>>> Most of the serial gadget devices are based on a UDC (USB device
>>> controller) and implemented by making use of the Linux gadget
>>> frameworks. But we are facing other implementions as well. One
>>> example can be found with xHCI debug capability. The xHCI debug
>>> capability implements a serial gadget with hardware and firmware,
>>> and provides an interface similar with xHCI host for submitting
>>> and reaping the transfer requests.
>>>
>>> In order to make better use of u_serial when implementing xHCI
>>> debug capability in xHCI driver, this patch moves u_serial.c
>>> from gadget/function to usb/common, and moves u_serial.h from
>>> gadget/function to include/linux/usb.
>>>
>>> Signed-off-by: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>
>> NAK, u_serial uses the gadget API. It's definitely not COMMON.
>>
>
> Okay. It seems that I can't use u_serial anyway. I will implement
> a new tty glue for my case.

have you looked at drivers/usb/serial/?

-- 
balbi