Re: [PATCH 0/5] drm/i915/dsi: Control panel and backlight enable GPIOs from VBT

[Hans de Goede]

Hi,

On 16-12-2019 13:16, Linus Walleij wrote:
> On Mon, Dec 16, 2019 at 12:11 PM Hans de Goede <hdegoede@xxxxxxxxxx> wrote:
>
> > Ugh, taking one last look at the "pinctrl: Export pinctrl_unregister_mappings"
> > patch it is no good, sorry.
>
> Ooops!
>
> > Linus, can you please drop this from your -next ?
>
> Sure, done.
>
> > So I see 2 options:
> > 1) Add an orig_map member to maps_node and use that in the comparison,
> > this is IMHO somewhat ugly
> >
> > 2) Add a new pinctrl_register_mappings_no_dup helper and document in
> > pinctrl_unregister_mappings kdoc that it can only be used together
> > with the no_dup variant.
> >
> > I believe that 2 is by far the best option. Linus do you agree or
> > do you have any other suggestions?
>
> What about (3) look for all calls to pinctrl_register_mappings()
> in the kernel.
>
> Hey it is 2 places in total:
> arch/arm/mach-u300/core.c:      pinctrl_register_mappings(u300_pinmux_map,
> drivers/pinctrl/cirrus/pinctrl-madera-core.c:           ret =
> pinctrl_register_mappings(pdata->gpio_configs,
>
> Delete  __initdata from the u300 table, the other one seems
> safe. Fold this into your patch.
>
> Go with the original idea.

That indeed sounds like a cleaner solution I will prepare a new version of
the patch (and this series for the i915 CI) with this approach.

Thanks & Regards,

Hans