Re: [PATCH v3 1/1] tty: serial: Use fifo in 8250 console driver

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To: Wander Costa <wcosta@xxxxxxxxxx>
Subject: Re: [PATCH v3 1/1] tty: serial: Use fifo in 8250 console driver
From: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Date: Tue, 25 Jan 2022 15:34:24 +0100
Cc: Wander Lairson Costa <wander@xxxxxxxxxx>, Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>, Jiri Slaby <jirislaby@xxxxxxxxxx>, "Maciej W. Rozycki" <macro@xxxxxxxxxxx>, Johan Hovold <johan@xxxxxxxxxx>, Serge Semin <fancer.lancer@xxxxxxxxx>, Lukas Wunner <lukas@xxxxxxxxx>, Pali Rohár <pali@xxxxxxxxxx>, Andrew Jeffery <andrew@xxxxxxxx>, "open list:SERIAL DRIVERS" <linux-serial@xxxxxxxxxxxxxxx>, open list <linux-kernel@xxxxxxxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>
In-reply-to: <CAAq0SUkuG2uyouBhT5yDiq_KbOGUCO=9ondq6dkt1QZLN_C4uA@mail.gmail.com>
References: <20211222112831.1968392-1-wander@redhat.com> <20211222112831.1968392-2-wander@redhat.com> <Ye/1+Z8mEzbKbrqG@linutronix.de> <CAAq0SUmdGinqdWXrHztx8g9hb+5UF5rDJJjVeVMj3CQ=Fw3kJg@mail.gmail.com> <YfAFAcYmJ+Zrontd@linutronix.de> <CAAq0SUkuG2uyouBhT5yDiq_KbOGUCO=9ondq6dkt1QZLN_C4uA@mail.gmail.com>

On 2022-01-25 11:26:03 [-0300], Wander Costa wrote:
> I will check on my side if I see something similar. Do you still get
> lines lost as well?

Yes. The output is garbage for a while and then it fixes itself. Setting
"use_fifo = 0" works.
Thanks.

Sebastian

References:
- [PATCH v3 0/1] tty: serial: Use fifo in 8250 console driver
  - From: Wander Lairson Costa
- [PATCH v3 1/1] tty: serial: Use fifo in 8250 console driver
  - From: Wander Lairson Costa
- Re: [PATCH v3 1/1] tty: serial: Use fifo in 8250 console driver
  - From: Sebastian Andrzej Siewior
- Re: [PATCH v3 1/1] tty: serial: Use fifo in 8250 console driver
  - From: Wander Costa
- Re: [PATCH v3 1/1] tty: serial: Use fifo in 8250 console driver
  - From: Sebastian Andrzej Siewior
- Re: [PATCH v3 1/1] tty: serial: Use fifo in 8250 console driver
  - From: Wander Costa

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