Re: some questions about usb_serial_probe

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hi all:

2012/7/18 loody <miloody@xxxxxxxxx>:
> hi:
>
> 2012/7/18 Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>:
>> On Wed, Jul 18, 2012 at 11:22:49AM +0800, loody wrote:
>>> Dear all:
>>> in usb_serial_probe, we create tty_port based on max_endpoints.
>>
>> Or based on the number that the driver said to create.
>>
>>> My questions are:
>>> 1. some callback functions, such serial_hangup, serial_carrier_raised,
>>> etc. will called by tty layer with different tty_ports.
>>> how tty layer know these tty_ports?
>>
>> They were registered with the tty layer.
>>
>>> I only found tty_port_init to initial these tty_ports, but where we
>>> register these tty_ports to tty layer?
>>
>> When we register the tty device.
> Would you mind to tell me which function it is?
after tracing source code, usb_serial_device_probe seems where we
register tty device.
But we only let tty know, tty_driver, index and struct device.
it seems we don't let tty know how many tty_ports we created.
Thanks for your help in advance,
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