linux-kernel - Re: [RFC PATCH 1/4] serial: uartps: Remove console

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Date:   Mon, 31 Jul 2017 09:37:17 +0200
From:   Michal Simek <michal.simek@...inx.com>
To:     Sören Brinkmann <soren.brinkmann@...inx.com>,
        Michal Simek <michal.simek@...inx.com>
CC:     <linux-kernel@...r.kernel.org>, <monstr@...str.eu>,
        Alan Cox <gnomes@...rguk.ukuu.org.uk>,
        Jiri Slaby <jslaby@...e.com>, <linux-serial@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RFC PATCH 1/4] serial: uartps: Remove console_initcall from the
 driver

On 21.7.2017 17:47, Sören Brinkmann wrote:
> On Fri, 2017-07-21 at 11:32:24 +0200, Michal Simek wrote:
>> register_console() is called from
>> uart_add_one_port()->uart_configure_port()
>> that's why register_console() is called twice.
>>
>> This patch remove console_initcall to call register_console() only from
>> one location.
>>
>> Also based on my tests cdns_uart_console_setup() is not called
>> from the first register_console() call.
>>
>> Signed-off-by: Michal Simek <michal.simek@...inx.com>
>> ---
>>
>> I am not quite sure about this because console_initcall is called
>> early but I can see any difference in usage.
>> pl011 is not calling this but others are doing it.
> 
> Doesn't this break early console/printk? I would expect that the UART
> initialization may happen later than console init.

as I said. I can't see any issue with it. Definitely please try.

Thanks,
Michal