serial/8250: Increase number of serial ports detected to 32

[Andy Whitcroft]

On Thu, Nov 11, 2010 at 09:18:22AM +0100, Yegor Yefremov wrote:
> Hello,
> 
> our company is developing multi port serial cards among other
> products. The main problem is, when the customers first install this
> devices especially those with 8 ports, they get only 2-3 ports
> detected, cause CONFIG_SERIAL_8250_RUNTIME_UARTS is set to 4. There
> are also many such requests all over the net. Serial interface is
> still not dead in spite of new technologies. So this change is really
> needed. I tried to propagate this change to serial tree maintainers,
> but it ended in proposal to change this through Linux distribution
> maintainers. After all they configure the kernels themselves, not
> necessarily using kernel default values. See this thread:
> http://www.spinics.net/lists/linux-serial/msg03020.html
> 
> What do you think about this? Should I open a bug request?

I would be interested to know if there are any downsides to increasing
this, are static structures sized based on it etc.

A bug is probabally appropriate, please do reply with the number on this
thread so we can find it easily.

-apw