Re: [PATCH v2 1/2] gpiolib: irqchip: use different lockdep class for each gpio irqchip

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Mon, Aug 17, 2015 at 2:35 PM, Grygorii Strashko
<grygorii.strashko@xxxxxx> wrote:

> Since IRQ chip helpers were introduced drivers lose ability to
> register separate lockdep classes for each registered GPIO IRQ
> chip and the gpiolib now is using shared lockdep class for
> all GPIO IRQ chips (gpiochip_irq_lock_class).
> As result, lockdep will produce warning when there are min two
> stacked GPIO chips and all of them are interrupt controllers.
>
> HW configuration which generates lockdep warning (TI dra7-evm):
(...)
> Cc: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Cc: Roger Quadros <rogerq@xxxxxx>
> Reported-by: Roger Quadros <rogerq@xxxxxx>
> Tested-by: Roger Quadros <rogerq@xxxxxx>
> Signed-off-by: Grygorii Strashko <grygorii.strashko@xxxxxx>
> ---
> Changes in v2:
> - removed accidental change in gpio chip structure description.

This v2 patch applied. I see no better alternative.

Yours,
Linus Walleij
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