linux-kernel - Re: [PATCH] i2c-piix4: support multiple PIIX4 SMBus hosts

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Message-ID: <20120604091643.208956fe@endymion.delvare>
Date:	Mon, 4 Jun 2012 09:16:43 +0200
From:	Jean Delvare <khali@...ux-fr.org>
To:	Andrew Armenia <andrew@...uaredlabs.com>
Cc:	Ben Dooks <ben-linux@...ff.org>,
	Wolfram Sang <w.sang@...gutronix.de>,
	linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c-piix4: support multiple PIIX4 SMBus hosts

Hi Andrew,

On Fri,  1 Jun 2012 14:16:12 -0400, Andrew Armenia wrote:
> Some AMD chipsets have a second PIIX4-compatible host adapter accessible
> through a second set of registers (e.g. SP5100). Moved the global base
> address variable to an extension of struct i2c_adapter; added logic
> to detect chipset known to have this feature. Tested on ASUS KCMA-D8 board.

This would be much easier to review if you would split this change into
two patches, one moving the per-adapter settings out of the global
scope, and one adding support for the second base address.

Furthermore, the use of container_of seems inappropriate here, as there
is a proper interface for per-adapter attributes: i2c_set_adapdata() and
i2c_get_adapdata().

-- 
Jean Delvare
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