From dc47206e552c0850ad11f7e9a1fca0a3c92f5d65 Mon Sep 17 00:00:00 2001
From: Richard Purdie <rpurdie@rpsys.net>
Date: Sat, 10 Nov 2007 13:29:04 +0000
Subject: leds: Fix led trigger locking bugs

Convert part of the led trigger core from rw spinlocks to rw
semaphores. We're calling functions which can sleep from invalid
contexts otherwise. Fixes bug #9264.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
---
 include/linux/leds.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'include/linux/leds.h')

diff --git a/include/linux/leds.h b/include/linux/leds.h
index dc1178f6184b..b4130ff58d0c 100644
--- a/include/linux/leds.h
+++ b/include/linux/leds.h
@@ -14,6 +14,7 @@
 
 #include <linux/list.h>
 #include <linux/spinlock.h>
+#include <linux/rwsem.h>
 
 struct device;
 /*
@@ -43,7 +44,7 @@ struct led_classdev {
 
 #ifdef CONFIG_LEDS_TRIGGERS
 	/* Protects the trigger data below */
-	rwlock_t		 trigger_lock;
+	struct rw_semaphore	 trigger_lock;
 
 	struct led_trigger	*trigger;
 	struct list_head	 trig_list;
-- 
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