ACPI poweroff trigers the NMI watchdog. Fix. drivers/acpi/osl.c | 14 +++++++++----- 1 files changed, 9 insertions(+), 5 deletions(-) diff -puN drivers/acpi/osl.c~apci-nmi-watchdog-fix drivers/acpi/osl.c --- 25/drivers/acpi/osl.c~apci-nmi-watchdog-fix 2003-07-01 23:02:57.000000000 -0700 +++ 25-akpm/drivers/acpi/osl.c 2003-07-01 23:04:50.000000000 -0700 @@ -35,6 +35,7 @@ #include #include #include +#include #include #include #include @@ -291,11 +292,14 @@ acpi_os_sleep(u32 sec, u32 ms) void acpi_os_stall(u32 us) { - if (us > 10000) { - mdelay(us / 1000); - } - else { - udelay(us); + while (us) { + u32 delay = 1000; + + if (delay > us) + delay = us; + udelay(delay); + touch_nmi_watchdog(); + us -= delay; } } _