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SubjectRe: "reboot" swsusp mode leaves moon icon blinking
Hi,

On Tue, Mar 20, 2007 at 01:32:45PM +0100, Pavel Machek wrote:
> Date: Tue, 20 Mar 2007 13:32:45 +0100
> From: Pavel Machek <pavel@ucw.cz>
> To: "Rafael J. Wysocki" <rjw@sisk.pl>,
> kernel list <linux-kernel@vger.kernel.org>
> Cc: Andrew Morton <akpm@osdl.org>
> Subject: "reboot" swsusp mode leaves moon icon blinking
>
> Hi!
>
> ...and cause is really simple.
>
> During resume, we do not know that "reboot" method was used, so we
> assume plaform and make the led blink...

What does the "reboot" swsusp mean?

I am having this (or a similar problem):

echo shutdown > /sys/power/disk; echo disk > /sys/power/state

suspends normally. But after a resume, the moon keeps blinking _and_
I don't get ACPI events anymore. At least all ibm-acpi features refuse
to work (hotkeys, lcd-brightness, lid, ...).

I saved some /proc files (interrupts, acpi/processor/power, ...) and
compared them before the suspend and after the resume but I could not
find any differences.

> diff --git a/kernel/power/disk.c b/kernel/power/disk.c
> index 873cdf8..dee0ff4 100644
> --- a/kernel/power/disk.c
> +++ b/kernel/power/disk.c
> @@ -241,18 +241,11 @@ static int software_resume(void)
> goto Done;
> }
>
> - error = platform_prepare();
> - if (error) {
> - swsusp_free();
> - goto Thaw;
> - }
> -

What is platform_prepare() actually good for when _resuming_? I tried to
follow the function calls and it seems to disable a lot of thing instead
of re-enabling them...?

=Hannes
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