linux-kernel - Re: [PATCH 4/28] drivers/ide: Drop return value from platform

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Date:	Thu, 18 Dec 2008 16:30:07 +0200
From:	Dmitri Vorobiev <dmitri.vorobiev@...ial.fi>
To:	Greg KH <greg@...ah.com>
CC:	Ben Dooks <ben-linux@...ff.org>, Julia Lawall <julia@...u.dk>,
	khali@...ux-fr.org, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH 4/28] drivers/ide: Drop return value from	platform_driver
 remove functions

Greg KH wrote:
> On Wed, Dec 17, 2008 at 02:49:46PM +0200, Dmitri Vorobiev wrote:
>> Ben Dooks wrote:
>>> On Wed, Dec 10, 2008 at 05:27:56PM +0100, Julia Lawall wrote:
>>>> From: Julia Lawall <julia@...u.dk>
>>>>
>>>> The return value of the remove function of a driver structure, and thus of
>>>> a platform_driver structure, is ultimately ignored, and is thus
>>>> unnecessary.  This patch removes the return value for the remove function
>>>> stored in a platform_driver structure.
>>>>
>>>> For the files drivers/i2c/busses/i2c-at91.c and
>>>> drivers/i2c/busses/i2c-mv64xxx.c, the original return value was the value
>>>> of a variable storing the result of calling i2c_del_adapter.  I have thus
>>>> also deleted the declaration and initialization of this variable.  For the
>>>> other files, the return values were always 0.
>>>>
>>>> A simplified version of the semantic patch that makes this change is as
>>>> follows: (http://www.emn.fr/x-info/coccinelle/)
>>> I take it remove_new will eventually be renamed to remove once all
>>> the changes have been made?
>>>
>>> Unless there are any objections I'll add this to the merge list for
>>> the next window.
>> Please be careful since the drivers/base/ part has not been applied
>> yet, so I'm Cc:ing Greg now for his opinion.
> 
> The more I think about it, the more I think it should not be changed,
> sorry.  We should leave the return value and do something based on the
> value of it if we can.

Thanks for the reply, it's justifying the changes in the SGI SCSI controller driver :)

Dmitri

> 
> thanks,
> 
> greg k-h

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