From b1d21ca83c9139e7889a754934bcdd7071157560 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 12 Jul 2006 13:25:56 -0700 Subject: [PATCH] [ROSE] lockdep: fix false positive ROSE network devices are virtual network devices encapsulating ROSE frames into AX.25 which will be sent through an AX.25 device, so form a special "super class" of normal net devices; split their locks off into a separate class since they always nest. Signed-off-by: Ralf Baechle Signed-off-by: David S. Miller --- net/rose/af_rose.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c index c115295ab431..08a542855654 100644 --- a/net/rose/af_rose.c +++ b/net/rose/af_rose.c @@ -66,6 +66,14 @@ static struct proto_ops rose_proto_ops; ax25_address rose_callsign; +/* + * ROSE network devices are virtual network devices encapsulating ROSE + * frames into AX.25 which will be sent through an AX.25 device, so form a + * special "super class" of normal net devices; split their locks off into a + * separate class since they always nest. + */ +static struct lock_class_key rose_netdev_xmit_lock_key; + /* * Convert a ROSE address into text. */ @@ -1515,6 +1523,7 @@ static int __init rose_proto_init(void) free_netdev(dev); goto fail; } + lockdep_set_class(&dev->_xmit_lock, &rose_netdev_xmit_lock_key); dev_rose[i] = dev; }