diff options
| -rw-r--r-- | net/can/af_can.c | 27 |
1 files changed, 14 insertions, 13 deletions
diff --git a/net/can/af_can.c b/net/can/af_can.c index 1f51b8a18242..36b9f22ed83a 100644 --- a/net/can/af_can.c +++ b/net/can/af_can.c @@ -656,26 +656,26 @@ int can_proto_register(struct can_proto *cp) return -EINVAL; } + err = proto_register(cp->prot, 0); + if (err < 0) + return err; + spin_lock(&proto_tab_lock); if (proto_tab[proto]) { printk(KERN_ERR "can: protocol %d already registered\n", proto); err = -EBUSY; - goto errout; + } else { + proto_tab[proto] = cp; + + /* use generic ioctl function if not defined by module */ + if (!cp->ops->ioctl) + cp->ops->ioctl = can_ioctl; } + spin_unlock(&proto_tab_lock); - err = proto_register(cp->prot, 0); if (err < 0) - goto errout; - - proto_tab[proto] = cp; - - /* use generic ioctl function if the module doesn't bring its own */ - if (!cp->ops->ioctl) - cp->ops->ioctl = can_ioctl; - - errout: - spin_unlock(&proto_tab_lock); + proto_unregister(cp->prot); return err; } @@ -694,9 +694,10 @@ void can_proto_unregister(struct can_proto *cp) printk(KERN_ERR "BUG: can: protocol %d is not registered\n", proto); } - proto_unregister(cp->prot); proto_tab[proto] = NULL; spin_unlock(&proto_tab_lock); + + proto_unregister(cp->prot); } EXPORT_SYMBOL(can_proto_unregister); |