Re: post 3.14 serial regression

From: Dave Hansen
Date: Wed Apr 09 2014 - 17:20:00 EST


On 04/09/2014 01:59 PM, Geert Uytterhoeven wrote:
> On Wed, Apr 9, 2014 at 10:04 PM, Dave Hansen <dave@xxxxxxxx> wrote:
>> On 04/09/2014 12:41 PM, Geert Uytterhoeven wrote:
>>> Dave: If I understand it correctly, you use console=ttyS2, while the kernel
>>> suddenly changed the order of the serial devices, so your port is no
>>> longer ttyS2, but ttyS4. Hence the serial port is not found, and
>>> uart_remove_one_port() is called on it, taking away your /dev/console for
>>> userspace?
>>
>> Right.
>
> Does it work with console=ttyS4?

Yes, after raising SERIAL_8250_NR_UARTS to >=6. It had been set to 4
(the Kconfig default).

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