linux-kernel - Re: [PATCH 5/5] opticon: Fix resume logic

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Message-Id: <200910062312.17832.oliver@neukum.org>
Date:	Tue, 6 Oct 2009 23:12:17 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Alan Cox <alan@...ux.intel.com>,
	Alan Stern <stern@...land.harvard.edu>
Cc:	greg@...ah.com, linux-kernel@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: [PATCH 5/5] opticon: Fix resume logic

Am Dienstag, 6. Oktober 2009 17:06:57 schrieb Alan Cox:
> Opticon now takes the right mutex to check the port status but the status
> check is done wrongly for the modern serial code, so fix it.

As Alan Stern noticed, it seems like we have an ab-ba deadlock here
between open and resume regarding pm_mutex and port->mutex.

	Regards
		Oliver

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