2.6.12 Altix: enable poweroff
PATCH 1/1 2.6.12 Altix: enable poweroff
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 <[email protected]>
arch/ia64/sn/kernel/setup.c 2005-03-04 14:09:28 -06:00 renamed from arch/ia64/sn/kernel/setup.c.orig 2005-03-04 14:14:36 -06:00 +9 -0
@@ -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; } /**