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netdevice: add the case if dev is NULL

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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>
This commit is contained in:
Yajun Deng
2021-08-05 19:54:34 +08:00
committed by Greg Kroah-Hartman
parent c4dc584a2d
commit ff919a7ad9
1 changed files with 4 additions and 2 deletions
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2
include/linux/netdevice.h
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@@ -3980,6 +3980,7 @@ void netdev_run_todo(void);
*/ */
static inline void dev_put(struct net_device *dev) static inline void dev_put(struct net_device *dev)
{ {
if (dev)
this_cpu_dec(*dev->pcpu_refcnt); this_cpu_dec(*dev->pcpu_refcnt);
} }
@@ -3991,6 +3992,7 @@ static inline void dev_put(struct net_device *dev)
*/ */
static inline void dev_hold(struct net_device *dev) static inline void dev_hold(struct net_device *dev)
{ {
if (dev)
this_cpu_inc(*dev->pcpu_refcnt); this_cpu_inc(*dev->pcpu_refcnt);
} }