Messages in this thread | | | From | "Rafael J. Wysocki" <> | Subject | Re: "reboot" swsusp mode leaves moon icon blinking | Date | Tue, 20 Mar 2007 18:00:27 +0100 |
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On Tuesday, 20 March 2007 17:50, Johannes Weiner wrote: > 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...?
Well, if you suspend using the platform mode, platform_finish() will be called after the image has been restored (ie. by the "old" kernel).
Greetings, Rafael
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