linux-kernel - Re: [PATCH V2 4/5] drivers/rtc/rtc-ds1307.c: Support optional wakeup interrupt source

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Date:	Wed, 24 Jun 2015 19:25:07 +0300
From:	Grygorii Strashko <grygorii.strashko@...com>
To:	Nishanth Menon <nm@...com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Alessandro Zummo <a.zummo@...ertech.it>
CC:	<linux-kernel@...r.kernel.org>, <rtc-linux@...glegroups.com>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <balbi@...com>
Subject: Re: [PATCH V2 4/5] drivers/rtc/rtc-ds1307.c: Support optional wakeup
 interrupt source

On 06/24/2015 07:07 PM, Nishanth Menon wrote:
> On 06/24/2015 10:36 AM, Grygorii Strashko wrote:
>> On 06/23/2015 07:15 PM, Nishanth Menon wrote:
> [...]
> 
>>> +		ds1307->wakeirq = of_irq_get(node, 1);
>>> +		if (ds1307->wakeirq <= 0) {
>>> +			if (ds1307->wakeirq == -EPROBE_DEFER) {
>>> +				err = ds1307->wakeirq;
>>> +				goto exit;
>>> +			}
>>> +			ds1307->wakeirq = 0;
>>> +			goto no_irq;
>>> +		}
>>
>> Might be above code could be done a little bit simpler?
>>
>> 		err = of_irq_get(node, 1);
>> 		if (err <= 0) {
>> 			if (err == -EPROBE_DEFER)
>> 				goto exit;
>> 			goto no_irq;
> 
> I had considered it, but problem with this approach is that is err
> does not get reset back to 0 and probe will fail as it flows through
> the rest of the code.. which is not our intent.
> 
>> 		}
>> 		ds1307->wakeirq = err;

As I can see from final code (after applying all patches) - It should work.
But I will not insist :)

-- 
regards,
-grygorii
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