From: Erik Gilling <konkers@android.com>
Date: Thu, 21 Jul 2011 21:07:45 +0000 (-0700)
Subject: earlysuspend: add verbose debug flag
X-Git-Tag: firefly_0821_release~7613^2~411
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=fec502d9a18bbe8045c67bd4f9d3a1ade4e78555;p=firefly-linux-kernel-4.4.55.git

earlysuspend: add verbose debug flag

when enabled, prints out the function of each handler as they are called

Change-Id: I5ed251867e0e3aa3cd05f030ff3579808cedd0c2
Signed-off-by: Erik Gilling <konkers@android.com>
---

diff --git a/kernel/power/earlysuspend.c b/kernel/power/earlysuspend.c
index 84bed51dcdce..b15f02eba45c 100644
--- a/kernel/power/earlysuspend.c
+++ b/kernel/power/earlysuspend.c
@@ -26,6 +26,7 @@
 enum {
 	DEBUG_USER_STATE = 1U << 0,
 	DEBUG_SUSPEND = 1U << 2,
+	DEBUG_VERBOSE = 1U << 3,
 };
 static int debug_mask = DEBUG_USER_STATE;
 module_param_named(debug_mask, debug_mask, int, S_IRUGO | S_IWUSR | S_IWGRP);
@@ -94,8 +95,11 @@ static void early_suspend(struct work_struct *work)
 	if (debug_mask & DEBUG_SUSPEND)
 		pr_info("early_suspend: call handlers\n");
 	list_for_each_entry(pos, &early_suspend_handlers, link) {
-		if (pos->suspend != NULL)
+		if (pos->suspend != NULL) {
+			if (debug_mask & DEBUG_VERBOSE)
+				pr_info("early_suspend: calling %pf\n", pos->suspend);
 			pos->suspend(pos);
+		}
 	}
 	mutex_unlock(&early_suspend_lock);
 
@@ -131,9 +135,14 @@ static void late_resume(struct work_struct *work)
 	}
 	if (debug_mask & DEBUG_SUSPEND)
 		pr_info("late_resume: call handlers\n");
-	list_for_each_entry_reverse(pos, &early_suspend_handlers, link)
-		if (pos->resume != NULL)
+	list_for_each_entry_reverse(pos, &early_suspend_handlers, link) {
+		if (pos->resume != NULL) {
+			if (debug_mask & DEBUG_VERBOSE)
+				pr_info("late_resume: calling %pf\n", pos->resume);
+
 			pos->resume(pos);
+		}
+	}
 	if (debug_mask & DEBUG_SUSPEND)
 		pr_info("late_resume: done\n");
 abort: