Hi Magnus, Kaneko-san,
On Mon, Nov 17, 2014 at 2:06 AM, Magnus Damm <[email protected]> wrote:
> On Fri, Nov 14, 2014 at 6:53 PM, Linus Walleij <[email protected]>
> wrote:
>> On Fri, Nov 7, 2014 at 10:22 AM, Yoshihiro Kaneko <[email protected]>
>> wrote:
>>> From: Shinya Kuribayashi <[email protected]>
>>>
>>> All IRQs in the kernel get disabled by PM core prior to .suspend_noirq()
>>> step through kernel/irq/pm.c::suspend_device_irqs().
>>>
>>> The SYSC hardware block in the R-Car SoCs, on the other hand, uses any
>>> interrupt as wake-up source(es) and requires them to be unmasked during
>>> the system is suspended.
>>>
>>> This patch implements .irq_set_wake() which makes __disable_irq() call
>>> a NOP when a GPIO port is claimed as a wake-up source.
>>>
>>> Signed-off-by: Shinya Kuribayashi <[email protected]>
>>> Signed-off-by: Koji Matsuoka <[email protected]>
>>> Signed-off-by: Yoshihiro Kaneko <[email protected]>
>>
>> Patch tentatively applied unless Magnus or Laurent starts complaining...
>
> I'll bite. =)
>
> Thanks for the efforts, but I doubt that this patch is needed. Unless
> I'm mistaken this feature is implemented already in the following
> commits:
>
> 4039611 gpio: rcar: Enable mask on suspend
> fba968a gpio: rcar: Use lazy disable
Good to see you (as the author of the driver and those two fixes) have some
reservations. I also had my doubts about this patch, but I didn't get to
testing it earlier...
I can confirm resume from s2ram works without and with this patch.
So unless this patch is meant to fix something else (is it?), I think it can be
dropped.
>> This driver should be simple to convert to GPIOLIB_IRQCHIP and get
>> rid of some code overhead.
>
> Perhaps Geert [CC:ed] can have a look at this in the not so distant future?
Sure. Will do.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- [email protected]
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
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