linux-kernel - Re: [PATCH v5 2/3] i2c: piix4: Fix probing of reserved ports on AMD Family 16h Model 30h

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Message-ID: <20190829202058.GR3740@ninjato>
Date:   Thu, 29 Aug 2019 22:20:58 +0200
From:   Wolfram Sang <wsa@...-dreams.de>
To:     Jean Delvare <jdelvare@...e.de>
Cc:     Linux I2C <linux-i2c@...r.kernel.org>,
        linux-kernel@...r.kernel.org, Andrew Cooks <acooks@...ionali.st>,
        linux-acpi@...r.kernel.org, platypus-sw@...ngear.com,
        "Tobin C . Harding" <me@...in.cc>,
        Guenter Roeck <linux@...ck-us.net>,
        Will Wagner <willw@...allon.com>
Subject: Re: [PATCH v5 2/3] i2c: piix4: Fix probing of reserved ports on AMD
 Family 16h Model 30h

On Fri, Aug 02, 2019 at 02:54:38PM +0200, Jean Delvare wrote:
> Prevent bus timeouts and resets on Family 16h Model 30h by not probing
> reserved Ports 3 and 4.
> 
> According to the AMD BIOS and Kernel Developer's Guides (BKDG), Port 3
> and Port 4 are reserved on the following devices:
>  - Family 15h Model 60h-6Fh
>  - Family 15h Model 70h-7Fh
>  - Family 16h Model 30h-3Fh
> 
> Based on earlier work by Andrew Cooks.
> 
> Reported-by: Andrew Cooks <andrew.cooks@...ngear.com>
> Signed-off-by: Jean Delvare <jdelvare@...e.de>

I wondered if this wasn't also for-current material (it saves timeouts),
but trusting Jean's judgement here.

Applied to for-next, thanks!


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