From: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Date: Fri, 21 Feb 2020 16:19:47 +0000 (+0530)
Subject: net: 802: psnap.c: Use built-in RCU list checking
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=0a087bf232c35dbec3769c4402ca737995d7b734;p=linux.git

net: 802: psnap.c: Use built-in RCU list checking

list_for_each_entry_rcu() has built-in RCU and lock checking.

Pass cond argument to list_for_each_entry_rcu() to silence
false lockdep warning when CONFIG_PROVE_RCU_LIST is enabled
by default.

Signed-off-by: Madhuparna Bhowmik <madhuparnabhowmik10@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/802/psnap.c b/net/802/psnap.c
index 40ab2aea7b315..4492e8d7ad206 100644
--- a/net/802/psnap.c
+++ b/net/802/psnap.c
@@ -30,7 +30,7 @@ static struct datalink_proto *find_snap_client(const unsigned char *desc)
 {
 	struct datalink_proto *proto = NULL, *p;
 
-	list_for_each_entry_rcu(p, &snap_list, node) {
+	list_for_each_entry_rcu(p, &snap_list, node, lockdep_is_held(&snap_lock)) {
 		if (!memcmp(p->type, desc, 5)) {
 			proto = p;
 			break;