lockdep: use WARN() in kernel/lockdep.c

Use WARN() instead of a printk+WARN_ON() pair; this way the message
becomes part of the warning section for better reporting/collection.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 1aa91fd..77fa776 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -1759,11 +1759,10 @@
 		hlock = curr->held_locks + i;
 		if (chain_key != hlock->prev_chain_key) {
 			debug_locks_off();
-			printk("hm#1, depth: %u [%u], %016Lx != %016Lx\n",
+			WARN(1, "hm#1, depth: %u [%u], %016Lx != %016Lx\n",
 				curr->lockdep_depth, i,
 				(unsigned long long)chain_key,
 				(unsigned long long)hlock->prev_chain_key);
-			WARN_ON(1);
 			return;
 		}
 		id = hlock->class_idx - 1;
@@ -1778,11 +1777,10 @@
 	}
 	if (chain_key != curr->curr_chain_key) {
 		debug_locks_off();
-		printk("hm#2, depth: %u [%u], %016Lx != %016Lx\n",
+		WARN(1, "hm#2, depth: %u [%u], %016Lx != %016Lx\n",
 			curr->lockdep_depth, i,
 			(unsigned long long)chain_key,
 			(unsigned long long)curr->curr_chain_key);
-		WARN_ON(1);
 	}
 #endif
 }