linux-kernel - Re: [PATCH V1 1/1] serial: 8250_fintek: Fix finding base

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Date:   Wed, 18 Oct 2017 21:04:35 +0100
From:   Alan Cox <gnomes@...rguk.ukuu.org.uk>
To:     "Ji-Ze Hong (Peter Hong)" <hpeter@...il.com>
Cc:     gregkh@...uxfoundation.org, jslaby@...e.com, rel+kernel@...lox.net,
        stable@...r.kernel.org, linux-serial@...r.kernel.org,
        linux-kernel@...r.kernel.org, hpeter+linux_kernel@...il.com,
        peter_hong@...tek.com.tw
Subject: Re: [PATCH V1 1/1] serial: 8250_fintek: Fix finding base_port with
 activated SuperIO

On Tue, 17 Oct 2017 14:23:08 +0800
"Ji-Ze Hong (Peter Hong)" <hpeter@...il.com> wrote:

> The SuperIO will be configured at boot time by BIOS, but some BIOS
> will not deactivate the SuperIO when the end of configuration. It'll
> lead to mismatch for pdata->base_port in probe_setup_port(). So we'll
> deactivate all SuperIO before activate special base_port in
> fintek_8250_enter_key().
> 
> Tested on iBASE MI802.

Good point.

Reviewd-by: Alan Cox <alan@...ux.intel.com>

Alan