Re: [PATCH 0/5] drop unused BACKLIGHT_GENERIC option

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Hi Krzysztof,
On Mon, Nov 30, 2020 at 10:25:01PM +0200, Krzysztof Kozlowski wrote:
> On Mon, Nov 30, 2020 at 08:11:33PM +0100, Sam Ravnborg wrote:
> > On Mon, Nov 30, 2020 at 03:21:32PM +0000, Andrey Zhizhikin wrote:
> > > Since the removal of generic_bl driver from the source tree in commit
> > > 7ecdea4a0226 ("backlight: generic_bl: Remove this driver as it is
> > > unused") BACKLIGHT_GENERIC config option became obsolete as well and
> > > therefore subject to clean-up from all configuration files.
> > > 
> > > This series introduces patches to address this removal, separated by
> > > architectures in the kernel tree.
> > > 
> > > Andrey Zhizhikin (5):
> > >   ARM: configs: drop unused BACKLIGHT_GENERIC option
> > >   arm64: defconfig: drop unused BACKLIGHT_GENERIC option
> > >   MIPS: configs: drop unused BACKLIGHT_GENERIC option
> > >   parisc: configs: drop unused BACKLIGHT_GENERIC option
> > >   powerpc/configs: drop unused BACKLIGHT_GENERIC option
> > 
> > For defconfigs I expect arch maintainers to do a make xxxdefconfig / make
> > savedefconfig / cp defconfig ... run now and then - this will remove
> > all such symbols.
> 
> savedefconfig can be tricky because of risk of loosing options:
> 1. it will remove options which became the default or became selected,
> 2. later when the default is changed or selecting option is removed, the
>    first option from #1 will not be brought back.
> 
> This was already for example with DEBUG_FS and the conclusion that time
> was - do not run savedefconfig automatically.
> 
> Therefore if some symbol(s) can be safely removed, patch is welcomed.

Thanks for letting me know, I have missed that discussion and
was obviously not aware.
I already acked'ed the patches and hope the soc people will pick them
up.

	Sam



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