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.

greg k-h
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