linux-kernel - Re: [PATCH 4/5] usb_serial: Kill port mutex

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Message-Id: <200910072256.21316.oliver@neukum.org>
Date:	Wed, 7 Oct 2009 22:56:20 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>, Greg KH <greg@...ah.com>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>
Subject: Re: [PATCH 4/5] usb_serial: Kill port mutex

Am Mittwoch, 7. Oktober 2009 20:52:21 schrieb Alan Stern:
> However in the option and sierra drivers there is a perverse path from
> close to resume: Both their close methods call
> usb_autopm_get_interface().  This could be removed without much
> trouble; perhaps we should do so.

I am afraid this won't do in the long run. Some drivers will want to
shut down devices by communicating with them in close().

	Regards
		Oliver

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