From: Yajun Deng yajun.deng@linux.dev
commit b37a466837393af72fe8bcb8f1436410f3f173f3 upstream.
Add the case if dev is NULL in dev_{put, hold}, so the caller doesn't need to care whether dev is NULL or not.
Signed-off-by: Yajun Deng yajun.deng@linux.dev Signed-off-by: David S. Miller davem@davemloft.net Cc: Pavel Machek pavel@denx.de Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- include/linux/netdevice.h | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
--- a/include/linux/netdevice.h +++ b/include/linux/netdevice.h @@ -3410,7 +3410,8 @@ void netdev_run_todo(void); */ static inline void dev_put(struct net_device *dev) { - this_cpu_dec(*dev->pcpu_refcnt); + if (dev) + this_cpu_dec(*dev->pcpu_refcnt); }
/** @@ -3421,7 +3422,8 @@ static inline void dev_put(struct net_de */ static inline void dev_hold(struct net_device *dev) { - this_cpu_inc(*dev->pcpu_refcnt); + if (dev) + this_cpu_inc(*dev->pcpu_refcnt); }
/* Carrier loss detection, dial on demand. The functions netif_carrier_on