linux-kernel - [RFC][PATCH 7/7] ACPI: Print message before calling

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Date:	Thu, 27 Dec 2007 19:20:01 +0100
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	ACPI Devel Maling List <linux-acpi@...r.kernel.org>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	Carlos Corbacho <carlos@...angeworlds.co.uk>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Pavel Machek <pavel@...e.cz>,
	pm list <linux-pm@...ts.linux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Len Brown <lenb@...nel.org>,
	Alexey Starikovskiy <aystarik@...il.com>,
	"Moore, Robert" <robert.moore@...el.com>
Subject: [RFC][PATCH 7/7] ACPI: Print message before calling _PTS

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

Make acpi_sleep_prepare() static and cause it to print a message
specifying the ACPI system sleep state to be entered (helpful for
debugging the suspend/hibernation code).

Signed-off-by: Rafael J. Wysocki <rjw@...k.pl>
---
 drivers/acpi/sleep/main.c  |    4 +++-
 drivers/acpi/sleep/sleep.h |    2 --
 2 files changed, 3 insertions(+), 3 deletions(-)

Index: linux-2.6/drivers/acpi/sleep/main.c
===================================================================
--- linux-2.6.orig/drivers/acpi/sleep/main.c
+++ linux-2.6/drivers/acpi/sleep/main.c
@@ -29,7 +29,7 @@ static u32 acpi_target_sleep_state = ACP
 static bool acpi_sleep_finish_wake_up;
 #endif
 
-int acpi_sleep_prepare(u32 acpi_state)
+static int acpi_sleep_prepare(u32 acpi_state)
 {
 #ifdef CONFIG_ACPI_SLEEP
 	/* do we have a wakeup address for S2 and S3? */
@@ -45,6 +45,8 @@ int acpi_sleep_prepare(u32 acpi_state)
 	ACPI_FLUSH_CPU_CACHE();
 	acpi_enable_wakeup_device_prep(acpi_state);
 #endif
+	printk(KERN_INFO PREFIX "Preparing to enter system sleep state S%d\n",
+		acpi_state);
 	acpi_enter_sleep_state_prep(acpi_state);
 	return 0;
 }
Index: linux-2.6/drivers/acpi/sleep/sleep.h
===================================================================
--- linux-2.6.orig/drivers/acpi/sleep/sleep.h
+++ linux-2.6/drivers/acpi/sleep/sleep.h
@@ -5,5 +5,3 @@ extern int acpi_suspend (u32 state);
 extern void acpi_enable_wakeup_device_prep(u8 sleep_state);
 extern void acpi_enable_wakeup_device(u8 sleep_state);
 extern void acpi_disable_wakeup_device(u8 sleep_state);
-
-extern int acpi_sleep_prepare(u32 acpi_state);
--
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