linux-kernel - Re: [RESEND][BUG][PATCH]-rc: USB: yurex: add .llseek fop to file

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Message-Id: <201011291604.12026.arnd@arndb.de>
Date:	Mon, 29 Nov 2010 16:04:11 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Tomoki Sekiyama <tomoki.sekiyama@...il.com>
Cc:	Greg KH <gregkh@...e.de>, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: [RESEND][BUG][PATCH]-rc: USB: yurex: add .llseek fop to file_operations

On Saturday 27 November 2010, Tomoki Sekiyama wrote:
> 2010/11/27 Arnd Bergmann <arnd@...db.de>:
>
> > As far as I can tell, you don't really want to seek this file
> > anyway, so the default behaviour of disallowing llseek would actually
> > make more sense.
> 
> I need seek because the device notifies the update of the sensor's value
> by fasync, then the user can rewind(seek to 0) and re-read the file.

Yes, that makes sense.

Acked-by: Arnd Bergmann <arnd@...db.de>
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