linux-kernel - Re: [PATCH] i2c-scmi: Quirk to work on IBM machines with broken BIOSes

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Message-ID: <20091022174304.GO26149@tux1.beaverton.ibm.com>
Date:	Thu, 22 Oct 2009 10:43:04 -0700
From:	"Darrick J. Wong" <djwong@...ibm.com>
To:	Crane Cai <crane.cai@....com>,
	Bjorn Helgaas <bjorn.helgaas@...com>, lenb@...nel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-i2c@...r.kernel.org, linux-acpi@...r.kernel.org
Subject: Re: [PATCH] i2c-scmi: Quirk to work on IBM machines with broken
	BIOSes

On Thu, Oct 22, 2009 at 03:17:53PM +0800, Crane Cai wrote:

> This patch below represents my meanings:
> *) add a new HID for IBM SMBus CMI devices
> *) add methods for IBM SMBus CMI devices as you did
> *) hook different HID with different control methods set
> It may be more smooth for i2c-scmi, please consider.

Looks fine to me.

I still need the changes to drivers/acpi/scan.c, but if you push this patch
upstream then I'll reroll my patch as a follow-on to yours...

>  static const struct acpi_device_id acpi_smbus_cmi_ids[] = {
> -	{"SMBUS01", 0},
> +	{"SMBUS01", (kernel_ulong_t)&smbus_methods},
> +	{"SMBUSIBM", (kernel_ulong_t)&ibm_smbus_methods},

...with the custom HID string #define'd in a header file someplace.

Actually, if you'll add a Signed-off-by line to your patch, I'll submit both of
them as a patchset and save you a little work. :)

> +	for (; id->id[0]; id++)

Stylistic nit--would it be clearer to initialize id in the for loop instead of
at the beginning of the function?

--D

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