Re: [PATCH v3] x86/rtc: Remove __init for runtime functions

From: Andy Shevchenko
Date: Thu Nov 24 2022 - 12:06:32 EST


On Thu, Nov 24, 2022 at 05:57:30PM +0100, Matija Glavinic Pecotic wrote:
> set_rtc_noop, get_rtc_noop are used runtime, therefore need init removed.
> Crash was observed on x86 platform where cmos rtc is unused and disabled
> via device tree. Function was triggered from ntp: sync_hw_clock, although
> CONFIG_RTC_SYSTOHC=n, however sync_cmos_clock doesn't honour that.
>
> Workqueue: events_power_efficient sync_hw_clock
> RIP: 0010:set_rtc_noop
> Call Trace:
> update_persistent_clock64
> sync_hw_clock
>
> Fix by dropping __init and making set/get_rtc_noop available runtime.
>
> Fixes: c311ed6183f4 ("x86/init: Allow DT configured systems to disable RTC at boot time")
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

Side note: seems you sent this not using `git send-email ...`
(I see my @intel.com rather than @linux.intel.com in the Cc list).

But at least the Cc list looks closer to what MAINTAINERS says.

And you forgot to make it clear that a) it's a resend, by altering
--subject-prefix, and b) mentioning this in the changelog.

--
With Best Regards,
Andy Shevchenko