Re: wake-on-lan

[Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>]

Hi, Joseph

At Sun, 8 Jan 2006 10:45:13 -0700,
Joseph Dunn wrote:
> 
> I'm trying to get wake-on-lan working for my media box.  However, I'm
> running into a problem.  When I halt the machine (shutdown -h) I cannot
> wake it.  However, if the machine is unplugged, then plugged back in,
> *then* I can wake it.  The lights on the ethernet card will only glow
> when the machine is off (i.e. card can wake the machine) when I unplug
> the power and plug it back in.  I did find that however software
> suspend 2 shuts down the machine does leave it in a wakable state.

How about this patch?

Thanks,

Satoru Takeuchi

To enable wakeup GPEs, acpi_enable_wakeup_device() has to be called.
But current ACPI subssytem doesn't call this function at the shutdown
time.
This patch fixes it.

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>

 drivers/acpi/sleep/poweroff.c |    1 +
 drivers/acpi/sleep/wakeup.c   |    2 ++
 2 files changed, 3 insertions(+)

Index: linux-2.6.16-rc1/drivers/acpi/sleep/poweroff.c
===================================================================
--- linux-2.6.16-rc1.orig/drivers/acpi/sleep/poweroff.c	2006-01-03 12:21:10.000000000 +0900
+++ linux-2.6.16-rc1/drivers/acpi/sleep/poweroff.c	2006-01-20 09:47:42.000000000 +0900
@@ -47,6 +47,7 @@
 	/* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */
 	printk("%s called\n", __FUNCTION__);
 	local_irq_disable();
+	acpi_enable_wakeup_device(ACPI_STATE_S5);
 	/* Some SMP machines only can poweroff in boot CPU */
 	acpi_enter_sleep_state(ACPI_STATE_S5);
 }
Index: linux-2.6.16-rc1/drivers/acpi/sleep/wakeup.c
===================================================================
--- linux-2.6.16-rc1.orig/drivers/acpi/sleep/wakeup.c	2006-01-20 12:04:41.000000000 +0900
+++ linux-2.6.16-rc1/drivers/acpi/sleep/wakeup.c	2006-01-20 12:05:40.000000000 +0900
@@ -48,6 +48,7 @@
 	}
 	spin_unlock(&acpi_device_lock);
 }
+#endif
 
 /**
  * acpi_enable_wakeup_device - enable wakeup devices
@@ -100,6 +101,7 @@
 	spin_unlock(&acpi_device_lock);
 }
 
+#ifdef CONFIG_ACPI_SLEEP
 /**
  * acpi_disable_wakeup_device - disable devices' wakeup capability
  *	@sleep_state:	ACPI state