On Fri, 27 Jun 2014 12:25:20 -0500
> + rate = 16 * max(115200U, (unsigned int)baud);
> +
This assumes an arbitarily configurable clock, which is not I think the
usual case.
> + /*
> + * Request a different clock rate if necessary, and
> + * record it if successful.
> + */
> + if (rate != p->uartclk) {
> + BUG_ON(!data->clk);
> + if (!clk_set_rate(data->clk, (unsigned long)rate))
> + p->uartclk = rate;
> + }
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