Fix up the locking in pcn(4) and mark it MPSAFE.

- Add locked versions of the init() and start() methods.
- Use callout_*() rather than timeout().
- Make the driver lock non-recursive.
- Push down locking in detach() and ioctl().
- Fix the tick routine to bail if the interface has been stopped and use
  callout_drain() in detach() after the call to stop().
- Lock the driver lock in the ifmedia handlers.

Tested by:	Ketrien I. Saihr-Kesenchedra ketrien at error404.nls.net
MFC after:	1 week

1 files changed, 1 insertions, 1 deletions

diff --git a/sys/pci/if_pcnreg.h b/sys/pci/if_pcnreg.h
index 2294854..84e4a3f 100644
--- a/sys/pci/if_pcnreg.h
+++ b/sys/pci/if_pcnreg.h
@@ -465,7 +465,7 @@ struct pcn_softc {
 	int			pcn_type;
 	struct pcn_list_data	*pcn_ldata;
 	struct pcn_ring_data	pcn_cdata;
-	struct callout_handle	pcn_stat_ch;
+	struct callout		pcn_stat_callout;
 	struct mtx		pcn_mtx;
 };