Re: char: legacy RTC cleanups

Hi Arnd,

On Wed, Apr 27, 2016 at 10:33 AM, Arnd Bergmann [off-list ref] wrote:

On Wednesday 27 April 2016 09:54:41 Geert Uytterhoeven wrote:

quoted

On Tue, Apr 26, 2016 at 11:44 PM, Arnd Bergmann [off-list ref] wrote:

quoted

For the genrtc driver, rearranging the headers makes it simpler
to use and reduces duplication. In case of alpha and mn10300,
I've shown that the genrtc and rtc drivers are doing the same
thing, so we don't need them both. The remaining three
architectures (m68k, parisc, powerpc) actually all support
the newer rtc-generic driver, so we could remove genrtc completely
if we want to.

CONFIG_GEN_RTC is not enabled in any of the m68k defconfigs, so I think genrtc
has been unused for a while.
All defconfigs either use CONFIG_RTC_DRV_GENERIC, or enable a more specific
RTC driver.

Ok, good to know. I'm guessing the same is true for parisc, but there are
also very few users.

Regarding the Q40 specific ioctls, what do you think this means, is it

a) nobody uses Q40 with modern kernels,
b) nobody calls RTC_PLL_GET/RTC_PLL_SET on q40, or
c) Q40 users have their own configurations and enable GEN_RTC?

To be honest, I have no idea. There have never been many Q40 users.
(old) http://www.linux-m68k.org/Registry/Statistics.html shows only 8.

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