From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mika Westerberg <mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Subject: Re: [PATCH] i2c: Not all adapters have a parent
Date: Thu, 10 Oct 2013 09:15:34 +0300
Message-ID: <20131010061534.GC3521@intel.com>
References: <20131010080406.3e0fd78e@endymion.delvare>
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To: Jean Delvare <jdelvare-l3A5Bk7waGM@public.gmane.org>
Cc: Linux I2C <linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>, "Rafael J. Wysocki" <rafael.j.wysocki-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
List-Id: linux-i2c@vger.kernel.org

On Thu, Oct 10, 2013 at 08:04:06AM +0200, Jean Delvare wrote:
> The code in acpi_i2c_register_devices() assumes that all i2c adapters
> have a parent. This is not necessarily the case, for example the
> i2c-stub driver instantiate a virtual i2c adapter without a parent.
> Check for this to avoid a NULL pointer deference.
> 
> Signed-off-by: Jean Delvare <jdelvare-l3A5Bk7waGM@public.gmane.org>
> Cc: Wolfram Sang <wsa-z923LK4zBo2bacvFa/9K2g@public.gmane.org>
> Cc: Mika Westerberg <mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
> Cc: "Rafael J. Wysocki" <rafael.j.wysocki-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>

Oh, I didn't know that. Thanks for the information.

Acked-by: Mika Westerberg <mika.westerberg-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>

Probably should go to stable as well.