Re: [RFC v3 1/2] pinctrl: core: Add pinctrl_mux_gpio_request_enable

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Fri, Mar 1, 2019 at 2:27 PM Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:

> /me gives v3 a try on Koelsch, Salvator-XS, and Ebisu-4D:
>
>     BUG: sleeping function called from invalid context
>
> for mmc, adv7511, gpio-keys, and Ethernet PHY.

This is the usual problem when you call back from any of the
irqchip callbacks: almost all of them except request/release
resources are called under a spinlock.

The problem is creeping up in a lot of places, and I can't
really solve that from the GPIO side. See for example this
regression that I have no idea what to do with:
https://marc.info/?l=linux-kernel&m=154349829407463&w=2

Yours,
Linus Walleij