Re: [patch 4/8] rtc: core: Make the sync offset default more realistic

From: Thomas Gleixner
Date: Thu Dec 10 2020 - 19:25:28 EST


Alexandre,

On Fri, Dec 11 2020 at 00:59, Alexandre Belloni wrote:
> On 06/12/2020 22:46:17+0100, Thomas Gleixner wrote:
>> /* Drivers can revise this default after allocating the device. */
>> - rtc->set_offset_nsec = NSEC_PER_SEC / 2;
>> + rtc->set_offset_nsec = 10 * NSEC_PER_MSEC;
>
> I did retest, on a slow 100kHz i2c bus, with a fairly inconvenient RTC,
> The maximum offset to set the RTC was 4845533ns so I'd say 10ms is too
> large. Should we make that 5ms ?

Sure. As I said I pulled the 10 out of thin air.

> Apart from that, on the series, you can add my
> Acked-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>

I'll amend the s/10/5/ throughout the series while queueing the whole
pile in the timers/core branch unless you want it to be handled
differently.

Thanks,

tglx