Re: [PATCH RESEND v3] gpio: lib-sysfs: Add 'wakeup' attribute

From: Linus Walleij
Date: Fri Jan 09 2015 - 04:32:43 EST


On Mon, Jan 5, 2015 at 7:16 PM, Soren Brinkmann
<soren.brinkmann@xxxxxxxxxx> wrote:

> Add an attribute 'wakeup' to the GPIO sysfs interface which allows
> marking/unmarking a GPIO as wake IRQ.
> The file 'wakeup' is created in each exported GPIOs directory, if an IRQ
> is associated with that GPIO and the irqchip implements set_wake().
> Writing 'enabled' to that file will enable wake for that GPIO, while
> writing 'disabled' will disable wake.
> Reading that file will return either 'disabled' or 'enabled' depening on
> the currently set flag for the GPIO's IRQ.
>
> Signed-off-by: Soren Brinkmann <soren.brinkmann@xxxxxxxxxx>
> Reviewed-by: Alexandre Courbot <acourbot@xxxxxxxxxx>
> ---
> v3:
> - add documentation
> v2:
> - fix error path to unlock mutex before return

Finally applied for v3.20.

Sorry for being a bit conservative and picky at times...

Yours,
Linus Walleij
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