X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?p=pandora-kernel.git;a=blobdiff_plain;f=net%2Frfkill%2Fcore.c;h=ae7b50afc215c8f0caefef1b84f0c6850d407ef4;hp=13d0fb69609b2c23d8067bdb5477d91eb36ebcb3;hb=e27ea5ee937701b1343a734548d10bb009156cda;hpb=407d1634d56b841279e1478253c212ea27bb7ea0

diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 13d0fb69609b..ae7b50afc215 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -1065,17 +1065,6 @@ static unsigned int rfkill_fop_poll(struct file *file, poll_table *wait)
 	return res;
 }
 
-static bool rfkill_readable(struct rfkill_data *data)
-{
-	bool r;
-
-	mutex_lock(&data->mtx);
-	r = !list_empty(&data->events);
-	mutex_unlock(&data->mtx);
-
-	return r;
-}
-
 static ssize_t rfkill_fop_read(struct file *file, char __user *buf,
 			       size_t count, loff_t *pos)
 {
@@ -1092,8 +1081,11 @@ static ssize_t rfkill_fop_read(struct file *file, char __user *buf,
 			goto out;
 		}
 		mutex_unlock(&data->mtx);
+		/* since we re-check and it just compares pointers,
+		 * using !list_empty() without locking isn't a problem
+		 */
 		ret = wait_event_interruptible(data->read_wait,
-					       rfkill_readable(data));
+					       !list_empty(&data->events));
 		mutex_lock(&data->mtx);
 
 		if (ret)