[SCSI] mptsas: support basic hotplug
Adds hotplug support for SAS end devices. Unfortunately the fusion
firmware doesn't generate similar events for expanders addition/removal
so we can't support them yet. Eric has an idea about a clever scheme to
find out about expander changes so that'll be added later on.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 6c48d1f..af9007d 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -612,6 +612,7 @@
struct list_head list;
struct net_device *netdev;
struct list_head sas_topology;
+ struct mutex sas_topology_mutex;
MPT_SAS_MGMT sas_mgmt;
} MPT_ADAPTER;