linux-kernel - Re: [uClinux-dev] Re: Fix support for console port other than ttyS0 on mcf.c

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Date:	Thu, 05 Feb 2009 10:24:12 +1000
From:	Greg Ungerer <gerg@...pgear.com>
To:	uClinux development list <uclinux-dev@...inux.org>
CC:	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>,
	linux-m68k@...r.kernel.org,
	Linux Kernel Development <linux-kernel@...r.kernel.org>
Subject: Re: [uClinux-dev] Re: Fix support for console port other than ttyS0
 on	mcf.c

Geert Uytterhoeven wrote:
> On Wed, 4 Feb 2009, Lennart Sorensen wrote:
>> Perhaps CCing linux-m68k@...ts.linux-m68k.org would be a good idea.
> 
> Thanks, but this is a uClinux driver.

I have commited this to the m68knommu git tree on kernel.org.

Thanks
Greg

>> On Wed, Feb 04, 2009 at 03:15:18PM -0500, Lennart Sorensen wrote:
>>> Due to a case of backwards logic, mfc.c always makes the console port be
>>> ttyS0 even when you ask for another port.
>>>
>>> This patch fixes this issue.
>>>
>>> Only when the requested port is NOT in the range 0 to MAXPORTS-1 do we
>>> force it to be treated as if port 0 was requested.  Forcing the port to
>>> 0 when it is in fact in the range 0 to MAXPORTS is not helpful.
>>>
>>> Tested with working console on ttyS2 on a 5271evb.
>>>
>>> Signed-off-by: Len Sorensen <lsorense@...lub.uwaterloo.ca>
>>>
>>> diff --git a/drivers/serial/mcf.c b/drivers/serial/mcf.c
>>> index 56841fe..0eefb07 100644
>>> --- a/drivers/serial/mcf.c
>>> +++ b/drivers/serial/mcf.c
>>> @@ -513,7 +513,7 @@ static int __init mcf_console_setup(struct console *co, char *options)
>>>         int parity = 'n';
>>>         int flow = 'n';
>>>
>>> -       if ((co->index >= 0) && (co->index <= MCF_MAXPORTS))
>>> +       if ((co->index < 0) || (co->index >= MCF_MAXPORTS))
>>>                 co->index = 0;
>>>         port = &mcf_ports[co->index].port;
>>>         if (port->membase == 0)
> 
> Gr{oetje,eeting}s,
> 
> 						Geert
> 
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org
> 
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
> 							    -- Linus Torvalds
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