linux-kernel - Re: [PATCH 1/2]drivers/usb/core/sysfs.c Fix variable 'retval' set but not used

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Message-ID: <Pine.LNX.4.44L0.1008031133270.1853-100000@iolanthe.rowland.org>
Date:	Tue, 3 Aug 2010 11:34:26 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Valdis.Kletnieks@...edu
cc:	"Justin P. Mattock" <justinmattock@...il.com>,
	<linux-usb@...r.kernel.org>, <dbrownell@...rs.sourceforge.net>,
	<gregkh@...e.de>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2]drivers/usb/core/sysfs.c Fix variable 'retval' set
 but not used

On Tue, 3 Aug 2010 Valdis.Kletnieks@...edu wrote:

> > Failure to create a file in sysfs is almost never fatal and usually not 
> > even dangerous.  Ignoring the error is generally better than failing 
> > the entire operation.
> 
> Then why the __must_check attribute if it's usually ignorable? I thought
> that was reserved for functions that you damned sight better well check
> for errors because bad things are afoot otherwise?

That's a good question.  Perhaps Greg KH knows the answer.

Alan Stern

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