*/
static inline void dev_put(struct net_device *dev)
{
+ if (dev) {
#ifdef CONFIG_PCPU_DEV_REFCNT
- this_cpu_dec(*dev->pcpu_refcnt);
+ this_cpu_dec(*dev->pcpu_refcnt);
#else
- refcount_dec(&dev->dev_refcnt);
+ refcount_dec(&dev->dev_refcnt);
#endif
+ }
}
/**
*/
static inline void dev_hold(struct net_device *dev)
{
+ if (dev) {
#ifdef CONFIG_PCPU_DEV_REFCNT
- this_cpu_inc(*dev->pcpu_refcnt);
+ this_cpu_inc(*dev->pcpu_refcnt);
#else
- refcount_inc(&dev->dev_refcnt);
+ refcount_inc(&dev->dev_refcnt);
#endif
+ }
}
/* Carrier loss detection, dial on demand. The functions netif_carrier_on