linux-kernel - Re: [2.6.23-rc1 REGRESSION] ThinkPad T42 poweroff failure by "PM: Introduce pm_power_off

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Message-Id: <200707251446.56809.rjw@sisk.pl>
Date:	Wed, 25 Jul 2007 14:46:55 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	YOSHIFUJI Hideaki /
	 吉藤英明 
	<yoshfuji@...ux-ipv6.org>
Cc:	pavel@....cz, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [2.6.23-rc1 REGRESSION] ThinkPad T42 poweroff failure by "PM: Introduce pm_power_off_prepare"

Hi,

On Wednesday, 25 July 2007 00:19, YOSHIFUJI Hideaki / 吉藤英明 wrote:
> Hello.
> 
> Linux 2.6.23-rc1 fails to power off my ThinkPad T42.
> Git-bisect told me that the following commit is to blame,
> and by reverting that commit, it works appropriately.

(1) Can you please apply the appended patch and see if the message gets
    printed when you try to power off the system?

(2) Can you please post your .config? 

Greetings,
Rafael


---
 drivers/acpi/sleep/poweroff.c |    1 +
 1 file changed, 1 insertion(+)

Index: linux-2.6.23-rc1/drivers/acpi/sleep/poweroff.c
===================================================================
--- linux-2.6.23-rc1.orig/drivers/acpi/sleep/poweroff.c
+++ linux-2.6.23-rc1/drivers/acpi/sleep/poweroff.c
@@ -42,6 +42,7 @@ int acpi_sleep_prepare(u32 acpi_state)
 static void acpi_power_off_prepare(void)
 {
 	/* Prepare to power off the system */
+	printk(KERN_EMERG "ACPI: Preparing to power off the system\n");
 	acpi_sleep_prepare(ACPI_STATE_S5);
 }
 
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