3 files changed, 13 insertions, 21 deletions

diff --git a/net/can/af_can.c b/net/can/af_can.c
index 606832115674..51adc4c2b860 100644
--- a/net/can/af_can.c
+++ b/net/can/af_can.c
@@ -114,7 +114,8 @@ static void can_sock_destruct(struct sock *sk)
         skb_queue_purge(&sk->sk_receive_queue);
 }
 
-static int can_create(struct net *net, struct socket *sock, int protocol)
+static int can_create(struct net *net, struct socket *sock, int protocol,
+                      int kern)
 {
         struct sock *sk;
         struct can_proto *cp;
@@ -125,7 +126,7 @@ static int can_create(struct net *net, struct socket *sock, int protocol)
         if (protocol < 0 || protocol >= CAN_NPROTO)
                 return -EINVAL;
 
-        if (net != &init_net)
+        if (!net_eq(net, &init_net))
                 return -EAFNOSUPPORT;
 
 #ifdef CONFIG_MODULES
@@ -160,11 +161,6 @@ static int can_create(struct net *net, struct socket *sock, int protocol)
                 goto errout;
         }
 
-        if (cp->capability >= 0 && !capable(cp->capability)) {
-                err = -EPERM;
-                goto errout;
-        }
-
         sock->ops = cp->ops;
 
         sk = sk_alloc(net, PF_CAN, GFP_KERNEL, cp->prot);
@@ -379,8 +375,8 @@ static struct hlist_head *find_rcv_list(canid_t *can_id, canid_t *mask,
                 return &d->rx[RX_ALL];
 
         /* extra filterlists for the subscription of a single non-RTR can_id */
-        if (((*mask & CAN_EFF_RTR_FLAGS) == CAN_EFF_RTR_FLAGS)
-            && !(*can_id & CAN_RTR_FLAG)) {
+        if (((*mask & CAN_EFF_RTR_FLAGS) == CAN_EFF_RTR_FLAGS) &&
+            !(*can_id & CAN_RTR_FLAG)) {
 
                 if (*can_id & CAN_EFF_FLAG) {
                         if (*mask == (CAN_EFF_MASK | CAN_EFF_RTR_FLAGS)) {
@@ -529,8 +525,8 @@ void can_rx_unregister(struct net_device *dev, canid_t can_id, canid_t mask,
          */
 
         hlist_for_each_entry_rcu(r, next, rl, list) {
-                if (r->can_id == can_id && r->mask == mask
-                    && r->func == func && r->data == data)
+                if (r->can_id == can_id && r->mask == mask &&
+                    r->func == func && r->data == data)
                         break;
         }
 
@@ -842,7 +838,7 @@ static struct packet_type can_packet __read_mostly = {
         .func = can_rcv,
 };
 
-static struct net_proto_family can_family_ops __read_mostly = {
+static const struct net_proto_family can_family_ops = {
         .family = PF_CAN,
         .create = can_create,
         .owner  = THIS_MODULE,
diff --git a/net/can/bcm.c b/net/can/bcm.c
index e8d58f33fe09..e32af52238a2 100644
--- a/net/can/bcm.c
+++ b/net/can/bcm.c
@@ -139,13 +139,13 @@ static char *bcm_proc_getifname(char *result, int ifindex)
         if (!ifindex)
                 return "any";
 
-        read_lock(&dev_base_lock);
-        dev = __dev_get_by_index(&init_net, ifindex);
+        rcu_read_lock();
+        dev = dev_get_by_index_rcu(&init_net, ifindex);
         if (dev)
                 strcpy(result, dev->name);
         else
                 strcpy(result, "???");
-        read_unlock(&dev_base_lock);
+        rcu_read_unlock();
 
         return result;
 }
@@ -1539,7 +1539,7 @@ static int bcm_recvmsg(struct kiocb *iocb, struct socket *sock,
                 return err;
         }
 
-        sock_recv_timestamp(msg, sk, skb);
+        sock_recv_ts_and_drops(msg, sk, skb);
 
         if (msg->msg_name) {
                 msg->msg_namelen = sizeof(struct sockaddr_can);
@@ -1581,7 +1581,6 @@ static struct proto bcm_proto __read_mostly = {
 static struct can_proto bcm_can_proto __read_mostly = {
         .type       = SOCK_DGRAM,
         .protocol   = CAN_BCM,
-        .capability = -1,
         .ops        = &bcm_ops,
         .prot       = &bcm_proto,
 };
diff --git a/net/can/raw.c b/net/can/raw.c
index b5e897922d32..abca920440b5 100644
--- a/net/can/raw.c
+++ b/net/can/raw.c
@@ -424,8 +424,6 @@ static int raw_setsockopt(struct socket *sock, int level, int optname,
 
         if (level != SOL_CAN_RAW)
                 return -EINVAL;
-        if (optlen < 0)
-                return -EINVAL;
 
         switch (optname) {
 
@@ -702,7 +700,7 @@ static int raw_recvmsg(struct kiocb *iocb, struct socket *sock,
                 return err;
         }
 
-        sock_recv_timestamp(msg, sk, skb);
+        sock_recv_ts_and_drops(msg, sk, skb);
 
         if (msg->msg_name) {
                 msg->msg_namelen = sizeof(struct sockaddr_can);
@@ -744,7 +742,6 @@ static struct proto raw_proto __read_mostly = {
 static struct can_proto raw_can_proto __read_mostly = {
         .type       = SOCK_RAW,
         .protocol   = CAN_RAW,
-        .capability = -1,
         .ops        = &raw_ops,
         .prot       = &raw_proto,
 };