ath0: using obsoleted if_watchdog interface

Recently cvsup'd.
This is new and I'm not sure I understand it.
dmesg...

...
ath0: using obsoleted if_watchdog interface
...

The full atheros stuff is:
...
ath0: <Atheros 5212> mem 0xc0200000-0xc020ffff irq 20
at device 4.0 on pci2
ath0: [ITHREAD]
ath0: using obsoleted if_watchdog interface
ath0: Ethernet address: [numbers]
ath0: mac 7.8 phy 4.5 radio 5.6
ath0: link state changed to UP
...

By the way, my little built-in wireless atheros device
  is working better than it ever has on this machine.

-N

======
Now I, Nebuchadnezzar, praise and extol and honor the King of heaven, for all his works are truth, and his ways are justice; and he is able to bring low those who walk in pride.
Daniel 4:37


       
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