linux-kernel - Re: [PATCH] Input: pwm-beeper - fix: scheduling while atomic

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Message-ID: <20160518160601.GB5407@kroah.com>
Date:	Wed, 18 May 2016 09:06:01 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Manfred Schlaegl <manfred.schlaegl@....at>
Cc:	Thierry Reding <thierry.reding@...il.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Manfred Schlaegl <manfred.schlaegl@...zinger.com>,
	Luis de Bethencourt <luis@...ethencourt.com>,
	Olivier Sobrie <olivier@...rie.be>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: pwm-beeper - fix: scheduling while atomic

On Wed, May 18, 2016 at 05:16:49PM +0200, Manfred Schlaegl wrote:
> Pwm config may sleep so defer it using a worker.
> 
> Trigger:
> On a Freescale i.MX53 based board we ran into "BUG: scheduling while
> atomic" because input_inject_event locks interrupts, but
> imx_pwm_config_v2 sleeps.
> 
> Tested on Freescale i.MX53 SoC with 4.6.0 and 4.1.24.
> 
> Unmodified applicable to
>  * 4.6    (stable)
>  * 4.5.4  (stable)
>  * 4.4.10 (longterm)
>  * 4.1.24 (longterm)
> 
> Modified applicable to
>  * 3.18.33 (longterm)

What does this all mean?  Have you read
Documentation/stable_kernel_rules.txt for how to mark things for stable
inclusion?

thanks,

greg k-h