linux-kernel - Re: [PATCH] Driver core: fix race in dev_driver

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Message-Id: <200912041716.19329.oliver@neukum.org>
Date:	Fri, 4 Dec 2009 17:16:19 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Greg KH <gregkh@...e.de>, stable@...nel.org,
	Rickard Bellini <rickard.bellini@...csson.com>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
	Torgny Johansson <torgny.johansson@...csson.com>,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Driver core: fix race in dev_driver_string

Am Freitag, 4. Dezember 2009 17:06:57 schrieb Alan Stern:
> Oliver:
> 
> We don't have to worry about the device structure being deallocated 
> while the routine is running.  If that happens it's a bug in the 
> caller: improper refcounting.

That raises two points

1. am I supposed to get a reference just so that I can use dev_err?
2. what happens if this is a soft disconnect and the device is reconnected?
It seems to me that you'd print the wrong driver's name.

	Regards
		Oliver
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