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Message-Id: <200707052118.25107.rjw@sisk.pl>
Date:	Thu, 5 Jul 2007 21:18:24 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Len Brown <len.brown@...el.com>,
	Nigel Cunningham <nigel@...el.suspend2.net>,
	Pavel Machek <pavel@....cz>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH -mm 1/2] ACPI: Do not prepare for hibernation in acpi_shutdown

From: Rafael J. Wysocki <rjw@...k.pl>

Since we are now explicitly calling hibernation_ops->prepare() before
hibernation_ops->enter() in hibernation_platform_enter() (defined in
kernel/power/disk.c), ACPI should not call acpi_sleep_prepare(ACPI_STATE_S4)
from acpi_shutdown().

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
Acked-by: Pavel Machek <pavel@....cz>
---
 drivers/acpi/sleep/poweroff.c |    3 ---
 1 file changed, 3 deletions(-)

Index: linux-2.6.22-rc6-mm1/drivers/acpi/sleep/poweroff.c
===================================================================
--- linux-2.6.22-rc6-mm1.orig/drivers/acpi/sleep/poweroff.c
+++ linux-2.6.22-rc6-mm1/drivers/acpi/sleep/poweroff.c
@@ -54,9 +54,6 @@ static int acpi_shutdown(struct sys_devi
 	case SYSTEM_POWER_OFF:
 		/* Prepare to power off the system */
 		return acpi_sleep_prepare(ACPI_STATE_S5);
-	case SYSTEM_SUSPEND_DISK:
-		/* Prepare to suspend the system to disk */
-		return acpi_sleep_prepare(ACPI_STATE_S4);
 	default:
 		return 0;
 	}

-
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