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List: linux-ia64
Subject: Resend: [PATCH] 2.6.12 Altix: enable poweroff
From: Aaron Young <ayoung () google ! engr ! sgi ! com>
Date: 2005-03-15 17:11:14
Message-ID: 200503151711.JAA39759 () google ! engr ! sgi ! com
[Download RAW message or body]
Tony, I am resending. I didn't get any comments on the original post - can
you take this ?
Thanks,
-Aaron Young (ayoung@sgi.com)
------
This patch adds the necessary "hook" to allow SGI/SN
machines to perform a system power off upon a
'init 0', 'halt -p', 'poweroff' or 'shutdown -h'.
The "hook" is to set the pm_power_off callback
to ia64_sn_power_down(). pm_power_off is checked
in machine_power_off()/do_poweroff() and, if set, is executed.
ia64_sn_power_down() is a function already present (but not
used currently) in the sn kernel.
ia64_sn_power_down() makes a SAL call to execute the
power off.
Signed-off-by: Aaron J Young <ayoung@sgi.com>
--- linux2.6.12/arch/ia64/sn/kernel/setup.c.orig 2005-03-04 14:14:36
-06:00
+++ linux2.6.12/arch/ia64/sn/kernel/setup.c 2005-03-04 14:09:28 -06:00
@@ -29,6 +29,7 @@
#include <linux/sched.h>
#include <linux/root_dev.h>
#include <linux/nodemask.h>
+#include <linux/pm.h>
#include <asm/io.h>
#include <asm/sal.h>
@@ -341,6 +342,14 @@ void __init sn_setup(char **cmdline_p)
screen_info = sn_screen_info;
sn_timer_init();
+
+ /*
+ * set pm_power_off to a SAL call to allow
+ * sn machines to power off. The SAL call can be replaced
+ * by an ACPI interface call when ACPI is fully implemented
+ * for sn.
+ */
+ pm_power_off = ia64_sn_power_down;
}
/**
-
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