[RFC 2/3] windfarm: dont die on suspend thread signal

[Johannes Berg <johannes@sipsolutions.net>]

When the windfarm thread gets a suspend signal it will die instead of
freezing. This fixes it.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>

--- linux-2.6-git.orig/drivers/macintosh/windfarm_core.c	2006-12-11 23:34:47.082716759 +0100
+++ linux-2.6-git/drivers/macintosh/windfarm_core.c	2006-12-11 23:37:58.181716759 +0100
@@ -93,8 +93,6 @@ static int wf_thread_func(void *data)
 	DBG("wf: thread started\n");
 
 	while(!kthread_should_stop()) {
-		try_to_freeze();
-
 		if (time_after_eq(jiffies, next)) {
 			wf_notify(WF_EVENT_TICK, NULL);
 			if (wf_overtemp) {
@@ -117,8 +115,8 @@ static int wf_thread_func(void *data)
 		if (delay <= HZ)
 			schedule_timeout_interruptible(delay);
 
-		/* there should be no signal, but oh well */
-		if (signal_pending(current)) {
+		/* there should be no non-suspend signal, but oh well */
+		if (signal_pending(current) && !try_to_freeze()) {
 			printk(KERN_WARNING "windfarm: thread got sigl !\n");
 			break;
 		}

--