ieee1394: merge from Linus

Conflicts: drivers/ieee1394/hosts.c
Patch "lockdep: annotate ieee1394 skb-queue-head locking" was meddling
with patch "ieee1394: fix kerneldoc of hpsb_alloc_host".

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/ieee1394/hosts.c b/drivers/ieee1394/hosts.c
index 3ed56be8706c..59e6f49545bf 100644
--- a/drivers/ieee1394/hosts.c
+++ b/drivers/ieee1394/hosts.c
@@ -90,6 +90,14 @@ static int alloc_hostnum_cb(struct hpsb_host *host, void *__data)
         return 0;
 }
 
+/*
+ * The pending_packet_queue is special in that it's processed
+ * from hardirq context too (such as hpsb_bus_reset()). Hence
+ * split the lock class from the usual networking skb-head
+ * lock class by using a separate key for it:
+ */
+static struct lock_class_key pending_packet_queue_key;
+
 static DEFINE_MUTEX(host_num_alloc);
 
 /**
@@ -128,6 +136,8 @@ struct hpsb_host *hpsb_alloc_host(struct hpsb_host_driver *drv, size_t extra,
         h->driver = drv;
 
         skb_queue_head_init(&h->pending_packet_queue);
+        lockdep_set_class(&h->pending_packet_queue.lock,
+                           &pending_packet_queue_key);
         INIT_LIST_HEAD(&h->addr_space);
 
         for (i = 2; i < 16; i++)