linux-kernel - Re: [PATCH] rtc: hym8563: enable wakeup by default

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Message-ID: <03f589d0-9c6f-4a3b-4d42-8d3f66b13436@collabora.com>
Date:   Thu, 5 Nov 2020 22:28:20 +0000
From:   Guillaume Tucker <guillaume.tucker@...labora.com>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Alessandro Zummo <a.zummo@...ertech.it>,
        Heiko Stuebner <heiko@...ech.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com
Subject: Re: [PATCH] rtc: hym8563: enable wakeup by default

On 05/11/2020 22:09, Alexandre Belloni wrote:
> On 05/11/2020 22:01:10+0000, Guillaume Tucker wrote:
>> Enable wakeup by default in the hym8563 driver to match the behaviour
>> implemented by the majority of RTC drivers.  As per the description of
>> device_init_wakeup(), it should be enabled for "devices that everyone
>> expects to be wakeup sources".  One would expect this to be the case
>> with a real-time clock.
>>
> 
> Actually, the proper way of doing it for a discrete RTC is to only
> enable wakeup if the irq request is successful or when the wakeup-source
> property is present on the node.

Thanks for the quick reply.  I see, I'll send a v2 accordingly.

Guillaume

>> Fixes: dcaf03849352 ("rtc: add hym8563 rtc-driver")
>> Reported-by: kernelci.org bot <bot@...nelci.org>
>> Signed-off-by: Guillaume Tucker <guillaume.tucker@...labora.com>
>> ---
>>  drivers/rtc/rtc-hym8563.c | 2 +-
>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
>> index 0fb79c4afb46..6fccfe634d57 100644
>> --- a/drivers/rtc/rtc-hym8563.c
>> +++ b/drivers/rtc/rtc-hym8563.c
>> @@ -527,7 +527,7 @@ static int hym8563_probe(struct i2c_client *client,
>>  	hym8563->client = client;
>>  	i2c_set_clientdata(client, hym8563);
>>  
>> -	device_set_wakeup_capable(&client->dev, true);
>> +	device_init_wakeup(&client->dev, true);
>>  
>>  	ret = hym8563_init_device(client);
>>  	if (ret) {
>> -- 
>> 2.20.1
>>
>