Merge branch 'intelfb-patches' of master.kernel.org:/pub/scm/linux/kernel/git/airlied...

[linux-2.6-omap-h63xx.git] / net / rose / af_rose.c

diff --git a/net/rose/af_rose.c b/net/rose/af_rose.c
index d0a67bb31363de2e45468dd9d9a99739b4c29e0c..08a542855654fb8981717faeb9a73ab52d3531b7 100644 (file)
--- 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.
  */
@@ -1490,14 +1498,13 @@ static int __init rose_proto_init(void)
 
        rose_callsign = null_ax25_address;
 
-       dev_rose = kmalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
+       dev_rose = kzalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
        if (dev_rose == NULL) {
                printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
                rc = -ENOMEM;
                goto out_proto_unregister;
        }
 
-       memset(dev_rose, 0x00, rose_ndevs * sizeof(struct net_device*));
        for (i = 0; i < rose_ndevs; i++) {
                struct net_device *dev;
                char name[IFNAMSIZ];
@@ -1516,6 +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;
        }