diff options
Diffstat (limited to 'net/core/link_watch.c')
| -rw-r--r-- | net/core/link_watch.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/net/core/link_watch.c b/net/core/link_watch.c index 429571c258da..8ec35194bfcb 100644 --- a/net/core/link_watch.c +++ b/net/core/link_watch.c @@ -33,7 +33,7 @@ static DECLARE_DELAYED_WORK(linkwatch_work, linkwatch_event); static LIST_HEAD(lweventlist); static DEFINE_SPINLOCK(lweventlist_lock); -static unsigned char default_operstate(const struct net_device *dev) +static unsigned int default_operstate(const struct net_device *dev) { if (netif_testing(dev)) return IF_OPER_TESTING; @@ -62,16 +62,13 @@ static unsigned char default_operstate(const struct net_device *dev) return IF_OPER_UP; } - static void rfc2863_policy(struct net_device *dev) { - unsigned char operstate = default_operstate(dev); + unsigned int operstate = default_operstate(dev); - if (operstate == dev->operstate) + if (operstate == READ_ONCE(dev->operstate)) return; - write_lock(&dev_base_lock); - switch(dev->link_mode) { case IF_LINK_MODE_TESTING: if (operstate == IF_OPER_UP) @@ -87,9 +84,7 @@ static void rfc2863_policy(struct net_device *dev) break; } - dev->operstate = operstate; - - write_unlock(&dev_base_lock); + WRITE_ONCE(dev->operstate, operstate); } |