Re: [PATCH 6/7] tty/powerpc: introduce the ePAPR embedded hypervisor byte channel driver

Alan Cox wrote:

You really also need a hangup method so vhangup() does the right thing
and you can securely do logins etc and sessions on your console. As
you've got no hardware entangled in this and you already use tty_port
helpers the hangup helper will do the work for you.

So all I need is this?

static void ehv_bc_tty_hangup(struct tty_struct *ttys)
{
	struct ehv_bc_data *bc = ttys->driver_data;

	tty_port_hangup(&bc->port);
}

I've noticed that some drivers flush their transmit buffers before calling
tty_port_hangup(), but some others don't.  Should I do this too?  I don't know
if hangup should be as quick as possible.

-- 
Timur Tabi
Linux kernel developer at Freescale