From mboxrd@z Thu Jan  1 00:00:00 1970
From: Greg KH <gregkh@linuxfoundation.org>
Subject: Re: [PATCH 2/2] backlight: pwm: clean up pwm requested using legacy
 API
Date: Sat, 11 Oct 2014 07:21:56 -0700
Message-ID: <20141011142156.GC11456@kroah.com>
References: <1413035186-11771-1-git-send-email-vladimir_zapolskiy@mentor.com>
 <1413035186-11771-3-git-send-email-vladimir_zapolskiy@mentor.com>
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Sender: stable-owner@vger.kernel.org
To: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Cc: linux-fbdev@vger.kernel.org, linux-pwm@vger.kernel.org, Thierry Reding <thierry.reding@gmail.com>, Jingoo Han <jg1.han@samsung.com>, Bryan Wu <cooloney@gmail.com>, Lee Jones <lee.jones@linaro.org>, stable@vger.kernel.org
List-Id: linux-pwm@vger.kernel.org

On Sat, Oct 11, 2014 at 04:46:26PM +0300, Vladimir Zapolskiy wrote:
> If PWM device is requested by means of legacy API pwm_request(), its
> resources are not freed on module unbind, which may cause an oops on
> access, e.g. by reading /sys/kernel/debug/pwm.
> 
> Reported-by: Dmitry Eremin-Solenikov <dmitry_eremin@mentor.com>
> Signed-off-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
> ---
>  drivers/video/backlight/pwm_bl.c |    4 ++++
>  1 file changed, 4 insertions(+)

<formletter>

This is not the correct way to submit patches for inclusion in the
stable kernel tree.  Please read Documentation/stable_kernel_rules.txt
for how to do this properly.

</formletter>