Re: [Qemu-devel] [Bug 1630723] [NEW] UART writes to netduino2/stm32f205-soc disappear

[Peter Maydell]

On 7 October 2016 at 17:03, Alistair Francis <address@hidden> wrote:
> On Fri, Oct 7, 2016 at 8:59 AM, Seth K <address@hidden> wrote:
>> The stm32f205 should support 6 UARTs, and the 6 addresses and IRQs are coded
>> correctly. However there is a hard-coded value MAX_SERIAL_PORTS limiting
>> serial_hds to 4, and I don't know why. I am considering submitting a patch.
>
> I'm not sure why we have that limit, you can submit a patch and see
> what everyone says.

Almost certainly purely historical reasons. MAX_SERIAL_PORTS has
been 4 since it was introduced in commit 8d11df9e5aa584 in 2004,
because the x86 PC has 4 serial ports. Presumably nobody since
has found the limit annoying enough to adjust.

thanks
-- PMM