Re: [PATCH/RFC 3/6] drivers: firmware: psci: Implement shallow suspend mode

[Geert Uytterhoeven]

Hi Mark,

On Tue, Feb 21, 2017 at 7:18 PM, Mark Rutland <mark.rutland@xxxxxxx> wrote:
>> On top of that, the Linux PM subsystem allows to configure wakeup by writing
>> "enabled" to a device's "wakeup" file in sysfs.  Or you can use ethtool for
>> Wake-on-LAN.
>
> Sure; userspace can always do something silly here.

Not that silly: you can wake up using these sources, but not necessarily from
all states.

> As I mentioned in my other reply, we could/should add an interface to
> allow userspace to determine if it has a guaranteed wakeup, which would
> allow us to do the right thing.

Right.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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