linux-kernel - Re: [RFC PATCH 2/6] Introduce ACPI style match in platform

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Message-ID: <20121001064709.GG15548@intel.com>
Date:	Mon, 1 Oct 2012 09:47:09 +0300
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	Zhang Rui <rui.zhang@...el.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	linux-pm <linux-pm@...ts.linux-foundation.org>,
	linux-i2c <linux-i2c@...r.kernel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"Len, Brown" <lenb@...nel.org>, "Rafael J. Wysocki" <rjw@...k.pl>,
	Grant Likely <grant.likely@...retlab.ca>,
	Dirk Brandewie <dirk.brandewie@...il.com>
Subject: Re: [RFC PATCH 2/6] Introduce ACPI style match in platform_match

On Fri, Sep 28, 2012 at 03:39:15PM +0800, Zhang Rui wrote:
> >From 5d7ecd12c2994b8c5905d52718c2870c3b62746e Mon Sep 17 00:00:00 2001
> From: Zhang Rui <rui.zhang@...el.com>
> Date: Fri, 28 Sep 2012 14:51:03 +0800
> Subject: [RFC PATCH 2/6] Introduce ACPI style match in platform_match
> 
> Signed-off-by: Zhang Rui <rui.zhang@...el.com>
> ---
>  drivers/base/platform.c |    8 ++++++++
>  1 files changed, 8 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/base/platform.c b/drivers/base/platform.c
> index a1a7225..90e64c6f 100644
> --- a/drivers/base/platform.c
> +++ b/drivers/base/platform.c
> @@ -20,6 +20,7 @@
>  #include <linux/err.h>
>  #include <linux/slab.h>
>  #include <linux/pm_runtime.h>
> +#include <linux/acpi.h>
>  
>  #include "base.h"
>  
> @@ -635,6 +636,13 @@ static const struct platform_device_id *platform_match_id(
>  			struct platform_device *pdev)
>  {
>  	while (id->name[0]) {
> +#ifdef CONFIG_ACPI

I don't think the above is needed as you stub the acpi_match_device_id()
out when !CONFIG_ACPI.

How about I2C and SPI slave devices?

> +		/* attempt ACPI style match */
> +		if (acpi_match_device_id(&pdev->dev, id->name) == 0) {
> +			pdev->id_entry = id;
> +			return id;
> +		}
> +#endif
>  		if (strcmp(pdev->name, id->name) == 0) {
>  			pdev->id_entry = id;
>  			return id;
> -- 
> 1.7.7.6
> 
> 
> 
> --
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