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

On Mon, Jan 5, 2015 at 7:16 PM, Soren Brinkmann
[off-list ref] 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 <redacted>
Reviewed-by: Alexandre Courbot <redacted>
---
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