linux-kernel - Re: [PATCH] device_attributes: add sysfs_attr

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Date:	Sun, 21 Mar 2010 23:40:28 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Wolfram Sang <w.sang@...gutronix.de>
Cc:	kernel-janitors@...r.kernel.org,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Greg KH <gregkh@...e.de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Mike Isely <isely@...ox.com>,
	Mauro Carvalho Chehab <mchehab@...radead.org>,
	Sujith Thomas <sujith.thomas@...el.com>,
	Matthew Garrett <mjg@...hat.com>, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
	platform-driver-x86@...r.kernel.org
Subject: Re: [PATCH] device_attributes: add sysfs_attr_init() for dynamic
 attributes

Hi Wolfram,

On Mon, Mar 22, 2010 at 07:21:17AM +0100, Wolfram Sang wrote:
> Made necessary by 6992f5334995af474c2b58d010d08bc597f0f2fe.
> 
> Found by this semantic patch:
> 
> @ init @
> type T;
> identifier A;
> @@
> 
>         T {
>                 ...
>                 struct device_attribute A;
>                 ...
>         };
> 
> @ main extends init @
> expression E;
> statement S;
> identifier err;
> T *name;
> @@
> 
>         ... when != sysfs_attr_init(&name->A.attr);
> (
> +       sysfs_attr_init(&name->A.attr);
>         if (device_create_file(E, &name->A))
>                 S
> |
> +       sysfs_attr_init(&name->A.attr);
>         err = device_create_file(E, &name->A);
> )
> 
> While reviewing, I put the initialization to apropriate places.
> 

My standard question - are all of these need to be dynamically
allocated?

Thanks.

-- 
Dmitry
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