linux-kernel - Re: [PATCH 0/1] staging: Add firewire-serial driver

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Date:	Wed, 24 Oct 2012 11:56:19 -0400
From:	Peter Hurley <peter@...leysoftware.com>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, linux1394-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org
Subject: Re: [PATCH 0/1] staging: Add firewire-serial driver

> > >  drivers/staging/fwserial/dma_fifo.c |  310 ++++
> > >  drivers/staging/fwserial/dma_fifo.h |  130 ++
> > >  drivers/staging/fwserial/fwserial.c | 2885 +++++++++++++++++++++++++++++++++++
> > >  drivers/staging/fwserial/fwserial.h |  355 +++++
> 
> drivers/firewire/net.c is 1721 lines, sbp_target is 2868 lines.
> Why is fwserial bigger?

1) Exclude the dma_fifo* files in the comparison, because block & net
devices get dma-able memory management from their subsystems.
2) Certain tty concepts don't map well to an automated bus, so these are
simulated (eg, break handling)
3) fwserial has to implement a protocol to virtually cable peers
4) sbp_target only supports 1 target.


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