linux-kernel - Re: [patch 3/3] clockevents: Fix resume logic

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Date:	Sat, 12 May 2007 10:46:03 +0200
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>, Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>,
	John Stultz <johnstul@...ibm.com>, linux-acpi@...r.kernel.org
Subject: Re: [patch 3/3] clockevents: Fix resume logic - updated version

On Fri, 2007-05-11 at 23:56 -0700, Andrew Morton wrote:
> On Fri, 11 May 2007 23:09:15 +0200 "Rafael J. Wysocki" <rjw@...k.pl> wrote:
> 
> > > > 
> > > > hm, Fedora don't seem to want to give me an RPM which contains acpidump and
> > > > all the yum servers are featuring scrogged checksums.  I could build it, I
> > > > guess, but there's a principle involved ;)
> > > > 
> > > > http://userweb.kernel.org/~akpm/dsdt is /proc/acpi/dsdt.  Is that OK?
> > > 
> > > Yes, thanks.
> > 
> > Hmm, have you tried to do 'echo shutdown > /sys/power/disk' before the
> > hibernation?
> 
> That didn't change the behaviour.

Andrew,

can you try the desperate witchcraft patch below ?

	tglx

Index: linux-2.6.21/arch/i386/kernel/apic.c
===================================================================
--- linux-2.6.21.orig/arch/i386/kernel/apic.c
+++ linux-2.6.21/arch/i386/kernel/apic.c
@@ -238,9 +238,13 @@ static void lapic_timer_setup(enum clock
 		break;
 	case CLOCK_EVT_MODE_UNUSED:
 	case CLOCK_EVT_MODE_SHUTDOWN:
-		v = apic_read(APIC_LVTT);
-		v |= (APIC_LVT_MASKED | LOCAL_TIMER_VECTOR);
-		apic_write_around(APIC_LVTT, v);
+
+		if (evt->mode == CLOCK_EVT_MODE_PERIODIC ||
+		    evt->mode == CLOCK_EVT_MODE_ONESHOT) {
+			v = apic_read(APIC_LVTT);
+			v |= (APIC_LVT_MASKED | LOCAL_TIMER_VECTOR);
+			apic_write_around(APIC_LVTT, v);
+		}
 		break;
 	case CLOCK_EVT_MODE_RESUME:
 		/* Nothing to do here */


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