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Commit 528d53a1 authored by Jean Delvare's avatar Jean Delvare Committed by Wolfram Sang
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i2c: piix4: Fix probing of reserved ports on AMD Family 16h Model 30h



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: default avatarAndrew Cooks <andrew.cooks@opengear.com>
Signed-off-by: default avatarJean Delvare <jdelvare@suse.de>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent ba919403
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