Re: [PATCH 2/5] gpiolib: Initialize the hardware with a callback

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Wed, Oct 9, 2019 at 6:51 PM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:

> After changing the drivers to use GPIO core to add an IRQ chip
> it appears that some of them requires a hardware initialization
> before adding the IRQ chip.
>
> Add an optional callback ->init_hw() to allow that drivers
> to initialize hardware if needed.
>
> This change is a part of the fix NULL pointer dereference
> brought to the several drivers recently.
>
> Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

Ouch!

But a very nice fix.

I will pull in the series.

Thanks for fixing this up so nicely Andy!

Yours,
Linus Walleij