From: Jianxin Pan <jianxin.pan@amlogic.com>
Date: Fri, 28 Jun 2019 05:23:55 +0000 (-0400)
Subject: wakeup: fix endless loop in wakeup source show [1/1]
X-Git-Tag: khadas-vims-v0.9.6-release~290
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=590164b5c7f71803df71bca35ff4a7ed12118fe9;p=platform%2Fkernel%2Flinux-amlogic.git

wakeup: fix endless loop in wakeup source show [1/1]

PD#SWPL-10134

Problem:
endless loop in wakeup source show

Solution:
fix endless loop in wakeup source show

Verify:
TL1

Change-Id: If2318e31388b4a656cf8d99058f8aeaf76ff97a0
Signed-off-by: Jianxin Pan <jianxin.pan@amlogic.com>
---

diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
index fd1b5c8..03eb3eb7 100644
--- a/drivers/base/power/wakeup.c
+++ b/drivers/base/power/wakeup.c
@@ -1075,8 +1075,16 @@ static int wakeup_sources_stats_show(struct seq_file *m, void *unused)
 		"last_change\tprevent_suspend_time\n");
 
 	srcuidx = srcu_read_lock(&wakeup_srcu);
-	list_for_each_entry_rcu(ws, &wakeup_sources, entry)
+	list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
 		print_wakeup_source_stats(m, ws);
+#ifdef CONFIG_AMLOGIC_MODIFY
+		if (ws->entry.next == ws->entry.prev) {
+			pr_err(" <%s> name:%s <%p, %p>\n", __func__,
+				ws->name,  ws->entry.next, ws->entry.prev);
+			break;
+		}
+#endif
+	}
 	srcu_read_unlock(&wakeup_srcu, srcuidx);
 
 	print_wakeup_source_stats(m, &deleted_ws);