linux-kernel - Re: [PATCH 4.4 16/34] led: core: Fix brightness setting when setting delay

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Message-ID: <1520436639.23626.31.camel@codethink.co.uk>
Date:   Wed, 07 Mar 2018 15:30:39 +0000
From:   Ben Hutchings <ben.hutchings@...ethink.co.uk>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org
Cc:     stable@...r.kernel.org
Subject: Re: [PATCH 4.4 16/34] led: core: Fix brightness setting when
 setting delay_off=0

On Fri, 2018-03-02 at 09:51 +0100, Greg Kroah-Hartman wrote:
> 4.4-stable review patch.  If anyone has any objections, please let me know.
> 
> ------------------
> 
> From: Matthieu CASTET <matthieu.castet@...rot.com>
> 
> 
> [ Upstream commit 2b83ff96f51d0b039c4561b9f95c824d7bddb85c ]
> 
> With the current code, the following sequence won't work :
> echo timer > trigger
> 
> echo 0 >  delay_off
> * at this point we call
> ** led_delay_off_store
> ** led_blink_set
[...]

The commit message got cut truncated here, but the upstream commit
message refers to a LED_BLINK_SW flag which is not used in 4.4.  So
this fix probably isn't needed, though I can't tell whether it does any
harm.

Ben.

-- 
Ben Hutchings
Software Developer, Codethink Ltd.