From: David S. Miller <davem@davemloft.net>
Date: Tue, 7 Jun 2011 00:00:35 +0000 (-0700)
Subject: irda: iriap: Use seperate lockdep class for irias_objects->hb_spinlock
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=79b3891587741dfac72cdfead1f2764b56a567b0;p=linux-beck.git

irda: iriap: Use seperate lockdep class for irias_objects->hb_spinlock

The SEQ output functions grab the obj->attrib->hb_spinlock lock of
sub-objects found in the hash traversal.  These locks are in a different
realm than the one used for the irias_objects hash table itself.

So put the latter into it's own lockdep class.

Reported-by: Dave Jones <davej@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/irda/iriap.c b/net/irda/iriap.c
index 36477538cea8..f876eed7d4aa 100644
--- a/net/irda/iriap.c
+++ b/net/irda/iriap.c
@@ -87,6 +87,8 @@ static inline void iriap_start_watchdog_timer(struct iriap_cb *self,
 			 iriap_watchdog_timer_expired);
 }
 
+static struct lock_class_key irias_objects_key;
+
 /*
  * Function iriap_init (void)
  *
@@ -114,6 +116,9 @@ int __init iriap_init(void)
 		return -ENOMEM;
 	}
 
+	lockdep_set_class_and_name(&irias_objects->hb_spinlock, &irias_objects_key,
+				   "irias_objects");
+
 	/*
 	 *  Register some default services for IrLMP
 	 */