Re: char: legacy RTC cleanups

Geert Uytterhoeven
2016-04-27T10:19:59Z

Hi Arnd,

On Wed, Apr 27, 2016 at 12:07 PM, Arnd Bergmann <arnd@arndb.de> wrote:
> On Wednesday 27 April 2016 11:44:10 Alexandre Belloni wrote:
>> On 26/04/2016 at 23:44:04 +0200, Arnd Bergmann wrote :
>> > I've had these patches in my tree for a while, after the first one
>> > had a few issues that are fixed in this new version. The old-style
>> > PC RTC driver is now also disabled on m68k (as pointed out by
>> > Geert), ppc (it was also blacklisted), and m32r (I showed that
>> > it did not build).
>> >
>> > 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.
>> >
>>
>> Personally, I'd go for the kill and remove genrtc instead of cleaning it up.
>
> Right, so we could skip patches 5 and 6, and instead remove the two
> headers as we remove the driver. Let's see what the architecture
> maintainers think about it, at least powerpc actually enables gen_rtc
> in its defconfig, so it might take a while to move it over.

FWIW, all PPC defconfigs (except tqm8xx.dts, which is a more recent platform)
enabling it did that long before my old commit to enable rtc-generic support
on PPC:

commit bcd68a70cb0eee556d86d93133aa150319bd9f53
Author: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Date: Thu Feb 19 16:50:46 2009 +0100

powerpc: Hook up rtc-generic, and kill rtc-ppc

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