Fix ThinkPad T42 poweroff failure introduced by by "PM: Introduce pm_power_off_prepare"
Commit bd804eba1c8597cbb7cd5a5f9fe886aae16a079a ("PM: Introduce
pm_power_off_prepare") caused problems in the poweroff path, as reported by
YOSHIFUJI Hideaki / 吉藤英明.
Generally, sysdev_shutdown() should be called after the ACPI preparation for
powering the system off. To make it happen, we can separate sysdev_shutdown()
from device_shutdown() and call it directly wherever necessary.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@linux-ipv6.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/include/linux/device.h b/include/linux/device.h
index d9f0a57..3a38d1f 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -551,6 +551,9 @@
/* drivers/base/power/shutdown.c */
extern void device_shutdown(void);
+/* drivers/base/sys.c */
+extern void sysdev_shutdown(void);
+
/* drivers/base/firmware.c */
extern int __must_check firmware_register(struct kset *);