Re: [PATCH] gpio: pcf857x: Check for irq_set_irq_wake() failures

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Tue, May 26, 2015 at 1:34 PM, Geert Uytterhoeven
<geert+renesas@xxxxxxxxx> wrote:

> If an interrupt controller doesn't support wake-up configuration,
> irq_set_irq_wake() returns an error code.  Then any subsequent call
> trying to deconfigure wake-up will cause an imbalance, and a warning
> will be printed:
>
>     WARNING: CPU: 1 PID: 1341 at kernel/irq/manage.c:540 irq_set_irq_wake+0x
>     Unbalanced IRQ 26 wake disable
>
> To fix this, refrain from any further parent interrupt controller
> (de)configuration if irq_set_irq_wake() failed.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Argh how hacky. Still I have no better ideas :(

Patch applied.

Yours,
Linus Walleij
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