linux-kernel - Re: [PATCH v2 1/3] regulator: fixed: add possibility to enable by clock

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Message-ID: <50190291-7146-5a2d-e4ae-c08c3de553d3@roeck-us.net>
Date:   Mon, 7 Oct 2019 07:25:43 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Philippe Schenker <philippe.schenker@...adex.com>
Cc:     Max Krummenacher <max.krummenacher@...adex.com>,
        Marcel Ziswiler <marcel.ziswiler@...adex.com>,
        Luka Pivk <luka.pivk@...adex.com>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        Stefan Agner <stefan.agner@...adex.com>,
        "lgirdwood@...il.com" <lgirdwood@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>
Subject: Re: [PATCH v2 1/3] regulator: fixed: add possibility to enable by
 clock

On 10/7/19 6:57 AM, Philippe Schenker wrote:
> On Mon, 2019-10-07 at 06:29 -0700, Guenter Roeck wrote:
>> On Tue, Sep 10, 2019 at 06:21:15AM +0000, Philippe Schenker wrote:
>>> This commit adds the possibility to choose the compatible
>>> "regulator-fixed-clock" in devicetree.
>>>
>>> This is a special regulator-fixed that has to have a clock, from
>>> which
>>> the regulator gets switched on and off.
>>>
>>> Signed-off-by: Philippe Schenker <philippe.schenker@...adex.com>
>>
>> This patch causes a crash in one of my qemu tests (kzm machine with
>> imx_v6_v7_defconfig). Reverting this patch fixes the problem.
>> Crash backtrace and bisect log attached below.
>>
>> Guenter
> 
> Axel Lin sent a patch to fix this NULL pointer issue with my patch
> (Thanks by the way :)). I guess it will help for your issue. Could you
> please test if this patch solves your issue?
> 

Yes, it does. I replied with Tested-by: on the fixup patch.

Thanks,
Guenter