Re: X86: Impossible select Enhanced Real Time Clock Support (legacy PC RTC driver)

From: Stefani Seibold
Date: Fri May 02 2014 - 16:05:33 EST


On Mon, 2014-04-28 at 20:20 +0200, Alessandro Zummo wrote:
> On Mon, 28 Apr 2014 11:16:37 -0700
> John Stultz <john.stultz@xxxxxxxxxx> wrote:
>
> > >> This breaks the API since there is no more misc device /dev/rtc
> > >> available without a udev rule or a link to /dev/rtc0.
> >
> > So yea.. I feel like that /dev/rtcN renaming (and API) break (which
> > was a huge and annoying pain) was back in the 2.6.18-ish era?
>
> It's very old and linking/renaming is around since then.
>
> > But it sounds like the driver/char/rtc bit is dead code, and needs a
> > cleanup? Or is there some use of that code that you need that the
> > generic RTC layer doesn't have?
>

The driver/char/rtc is not working code and should be a wrapper to the
first rtc device.

> as far as I know, no recent distribution is using the old code
> anymore and the new (well, not so new anymore) framework provides the same functionality.
>

Embedded distribution use it and depending on the /dev/rtc device. So
what is missing is the /dev/rtc misc device 10,135.

- Stefani

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