linux-kernel - Re: [PATCH] i2c: s3c2410: resume race fix

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Message-ID: <20140514155956.GD12911@katana>
Date:	Wed, 14 May 2014 17:59:56 +0200
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Doug Anderson <dianders@...omium.org>
Cc:	Olof Johansson <olof@...om.net>, Ben Dooks <ben-linux@...ff.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	linux-arm-kernel@...ts.infradead.org,
	linux-samsung-soc@...r.kernel.org, linux-i2c@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] i2c: s3c2410: resume race fix

On Fri, Apr 11, 2014 at 03:19:41PM -0700, Doug Anderson wrote:
> From: Olof Johansson <olof@...om.net>
> 
> Don't unmark the device as suspended until after it's been re-setup.
> 
> The main race would be w.r.t. an i2c driver that gets resumed at the same
> time (asyncronously), that is allowed to do a transfer since suspended
> is set to 0 before reinit, but really should have seen the -EIO return
> instead.
> 
> Signed-off-by: Olof Johansson <olof@...om.net>
> Signed-off-by: Doug Anderson <dianders@...omium.org>

Applied to for-current, thanks!


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