linux-kernel - Re: [PATCH V3 5/5] rtc: max77686: move initialisation of rtc regmap, irq chip locally

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Date:	Fri, 5 Feb 2016 20:07:00 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	<lee.jones@...aro.org>, <alexandre.belloni@...e-electrons.com>,
	<javier@....samsung.com>
CC:	<cw00.choi@...sung.com>, <linux-kernel@...r.kernel.org>,
	<rtc-linux@...glegroups.com>
Subject: Re: [PATCH V3 5/5] rtc: max77686: move initialisation of rtc regmap,
 irq chip locally

Hi Krzysztof, Javier,

On Thursday 04 February 2016 02:38 PM, Krzysztof Kozlowski wrote:
> On 04.02.2016 15:58, Krzysztof Kozlowski wrote:
>>> 3. Can you try locally to not use devm_regmap_init_i2c() and just use
>>> the regmap_init_i2c() and proper removal of this from error path and
>>> remove callback?
>> I'll try to find some time for that. Maybe tomorrow.
> regmap_init_i2c does not help. However helps commenting out the:
> 	regmap_del_irq_chip(info->rtc_irq, info->rtc_irq_data);
> from remove() callback.
>
>

I am trying to reproduce this in my system but I am ending up with 
different issue as it need to enable the suspend.
can you please help on following experiment:
1. In probe/init, do
    regmap_add_irq_chip()
   regmap_del_irq_chip() and then
   regmap_add_irq_chip() and
then without unbind()/bind(), working or not?

   This is to make sure that it is universal issue rather than calling 
from remove callback only.

2. Do regmap_add_irq_chip() but dont do any interrupt registration i.e. 
comment regmap_irq_get_virq() and request_threaded_irq() and hence 
free_irq().
Then do unbind/bind and then suspend.
   To make sure that this happen when only we have client registered 
interrupt.

3. Extension of 2
Do regmap_add_irq_chip(), call  regmap_irq_get_virq() for creating irq 
mapping but dont do any interrupt registration i.e. comment 
request_threaded_irq() and hence free_irq().
Then do unbind/bind and then suspend.
   To make sure that this happen when only we have client registered 
interrupt or with mapping also.

Thanks for help in advance.