Re: [PATCH 3/6] rtc: da9063: Use dev_err_probe()

[Alexandre Belloni <alexandre.belloni@bootlin.com>]

On 01/12/2023 16:40:25+0000, Biju Das wrote:
> > RTC_FEATURE_ALARM is what you should clear and you have to fallback to the
> > irq is not present case.
> 
> 
> Ok,Will update Patch#3 with clearing "RTC_FEATURE_ALARM" as the fallback for the irqhandler error case
> 
> On patch#1, I will clear both RTC_FEATURE_ALARM" and "RTC_FEATURE_UPDATE_INTERRUPT",
> 
> as with just clearing "RTC_FEATURE_ALARM", I get below error.
> 
> root@smarc-rzg2ul:~# date -s "2023-08-06 19:30:00"
> Sun Aug  6 19:30:00 UTC 2023
> root@smarc-rzg2ul:~# hwclock -w
> root@smarc-rzg2ul:~# hwclock -r
> hwclock: select() to /dev/rtc0 to wait for clock tick timed out
> root@smarc-rzg2ul:~#
> 
>

I can't believe this is true because the rtc core code will take the
same path when RTC_FEATURE_ALARM or RTC_FEATURE_UPDATE_INTERRUPT is
cleared:

https://elixir.bootlin.com/linux/latest/source/drivers/rtc/interface.c#L574

RTC_FEATURE_UPDATE_INTERRUPT must be cleared only when RTC_FEATURE_ALARM
is set.


> Cheers,
> Biju
> 
> > > > > >
> > > > > > >
> > > > > > >                 ret = dev_pm_set_wake_irq(&pdev->dev,
> > irq_alarm);
> > > > > > >                 if (ret)
> > > > > >
> > > > > > The rest LGTM, so with the above fixed/clarified:
> > > > > > Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> > > > > >
> > > > > > Gr{oetje,eeting}s,
> > > > > >
> > > > > >                         Geert
> > > > > >
> > > > > > --
> > > > > > Geert Uytterhoeven -- There's lots of Linux beyond ia32 --
> > > > > > geert@linux- m68k.org
> > > > > >
> > > > > > In personal conversations with technical people, I call myself a
> > > > hacker.
> > > > > > But when I'm talking to journalists I just say "programmer" or
> > > > > > something like that.
> > > > > >                                 -- Linus Torvalds
> > > >
> > > > --
> > > > Alexandre Belloni, co-owner and COO, Bootlin Embedded Linux and
> > > > Kernel engineering
> > > >
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> > --
> > Alexandre Belloni, co-owner and COO, Bootlin Embedded Linux and Kernel
> > engineering
> > https://jpn01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbootlin.
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> > 2BaSJm2Ra4OsRI%3D&reserved=0

-- 
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com