# this workaround is there in OE since 2003. It looks to provide a workaround
# allowing others sending SIGUSR1 to cause an apm suspend event. Disable it for
# now.
#
# comment added by Kevin Tian <kevin.tian@intel.com>, 2010-07-13
#
# Patch managed by http://www.holgerschurig.de/patcher.html
#

--- apmd-3.2.2.orig/apmd.c~workaround.patch
+++ apmd-3.2.2.orig/apmd.c
@@ -158,6 +158,7 @@
 static int quiet_bios_batlow; /* = 0 */
 static int verbosity = DEFAULT_VERBOSITY;
 static int warn_level = 10;
+static int sleep_now = 0;	/* ntp */
 
 static uid_t apmd_uid = 0;
 static int apmd_fd = -1;
@@ -942,6 +943,12 @@
 	exit(0);
 }
 
+/* ntp */
+static void sig_usr1(int sig)
+{
+  sleep_now = 1;
+}
+
 int main(int argc, char **argv)
 {
 	int c;
@@ -1151,6 +1158,8 @@
 	openlog("apmd", (verbosity>=LOG_DEBUG)?LOG_PERROR:0 | LOG_PID | LOG_CONS, LOG_DAEMON);
 
 	/* Set up signal handler */
+ 	if (signal(SIGUSR1, SIG_IGN) != SIG_IGN)
+ 		signal(SIGUSR1, sig_usr1);	/* ntp */
 	if (signal(SIGINT, SIG_IGN) != SIG_IGN)
 		signal(SIGINT, sig_handler);
 	if (signal(SIGQUIT, SIG_IGN) != SIG_IGN)
@@ -1230,9 +1239,16 @@
 
 	for (;;)
 	{
-		int num_events = apm_get_events(apmd_fd, check_interval, events, MAX_EVENTS);
+		int num_events;
 		int e, a;
 
+		/* ntp */
+		if (sleep_now) {
+			sleep_now = 0;
+			handle_event(APM_USER_SUSPEND, &apminfo);
+		}
+
+		num_events = apm_get_events(apmd_fd, check_interval, events, MAX_EVENTS);
 		apm_read(&apminfo);
 
 		if (num_events == 0) {