linux-kernel - Re: [PATCH 1/3] tty: move hvc drivers to drivers/tty/hvc/

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Date:	Fri, 28 Jan 2011 08:27:25 +0530
From:	Amit Shah <amit.shah@...hat.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Greg Kroah-Hartman <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 1/3] tty: move hvc drivers to drivers/tty/hvc/

On (Thu) Jan 27 2011 [22:53:29], Arnd Bergmann wrote:
> On Thursday 27 January 2011 19:29:44 Amit Shah wrote:
> > On (Thu) Jan 20 2011 [10:03:43], Greg Kroah-Hartman wrote:
> > > As requested by Arnd Bergmann, the hvc drivers are now
> > > moved to the drivers/tty/hvc/ directory.  The virtio_console.c driver
> > > was also moved, as it required the hvc_console.h file to be able to be
> > > built, and it really is a hvc driver.
> > 
> > I just saw this now as a result of this patch entering mainline.  I
> > would have liked to be CC'ed to the patches.  Also, I don't like the
> > move of the virtio_console.c file to drivers/tty/hvc.  virtio_console.c
> > is not only an hvc driver; one of its functions is to hook some ports to
> > hvc, but it's mostly a generic driver these days.
> 
> Sorry about this, the idea to move this file was mine and my original
> patch did this as well. I remembered the code from when it was a simple
> console driver based on hvc and never noticed that it had evolved into
> a generic host/guest communication stack.
> 
> > Can you please move it back?
> 
> No objection from me here in general, though as Greg writes above, it's
> a bit ugly when hvc_console.h is in a different directory.

Greg, can you do this please?  (A way to do it with preservig git
history of the file would be great as well, but I think only a revert
will do that?)

> > I could perhaps think of a way of splitting the file so the hvc bits can
> > be moved to drivers/tty/hvc/ and having the core stay in drivers/char/,
> > but that'll have to wait for the next cycle.
> 
> I think that's a really good idea. The main reason for moving the tty
> drivers from drivers/char to drivers/tty was to separate the everything
> related to tty from everything else. The common part should IMHO then not
> be named "console", "tty" os similar but indicate that it's more generic
> than that. Maybe virtio-pipe?

Rusty has suggested virtio-ports in the past.

		Amit
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