linux-kernel - Re: [PATCH] Enable console on PCI serial devices

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Date:	Fri, 17 Oct 2008 08:46:40 -0600
From:	Bjorn Helgaas <bjorn.helgaas@...com>
To:	n0ano@...no.com
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, donald.d.dugger@...el.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Enable console on PCI serial devices

On Friday 17 October 2008 08:11:02 am n0ano@...no.com wrote:
> On Fri, Oct 17, 2008 at 10:28:58AM +0100, Alan Cox wrote:
> > Different discussion and different patches. We can get patches in for the
> > crystal frequency stuff and then debate the rest later
> 
> In that case, here is the crystal frequency patch (typos fixed and
> proper sign off line).

I like this patch, except ...

> +			"options" are the same as for ttyS, above.  "clk"
> +			is the crystal frequency which defaults to 115200
> +			(typically the fastest baud rate supported by the
> +			uart) but some hardware use different crystals.

this text is a little confusing.  Since you multiply by 16 below, the
number specified by the user isn't really the crystal frequency, is it?

> +	options = strchr(options, ',');
> +	if (options) {
> +		options++;
> +		port->uartclk = simple_strtoul(options, NULL, 0) * 16;
> +	}
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