Re: [PATCH 0/7] rtc: Add support for limited alarm timer offsets

[Alexandre Belloni]

On 16/08/2023 12:12:14-0700, Guenter Roeck wrote:
> On Wed, Aug 16, 2023 at 06:14:35PM +0200, Alexandre Belloni wrote:
> > On 16/08/2023 08:50:12-0700, Guenter Roeck wrote:
> > > > I'm fine with the series, however, this doesn't solve the issue for RTCs
> > > > that have an absolute limit on the alarm (as opposed to an offset to the
> > > > current time/date).
> > > > 
> > > 
> > > I thought that is checked by rtc_valid_range() in rtc_set_alarm().
> > > Am I missing something ? Of course that assumes that the absolute
> > > maximum alarm timeout matches range_max, but I didn't find any
> > > drivers where that would not be the case.
> > > 
> > 
> > There are RTCs where this is not the case. When this is far away in the
> > future enough, the usual solution is to clip range_max which works but
> > is not really great intellectually.
> > 
> Do you have an example, by any chance ?
> 

I'm sorry, I've been looking and I couldn't find it anymore. Don't
bother with this for now.

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