[SCSI] mpt fusion: lock down ScsiLookup

ScsiLookup is an array of pending scmd pointers that the scsi lld
maintains. This array is touched from queuecommand, eh threads, and
interrupt context. This array should put under locks, hence this patch
to synchronize its access.  I've added some nice little function
wrappers for this, and moved the ScsiLookup array over to MPT_ADAPTER
struct.

Signed-off-by: Eric Moore <Eric.Moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 945656438e71..eb65c493ce0a 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -704,6 +704,8 @@ typedef struct _MPT_ADAPTER
         struct work_struct       fc_rescan_work;
         char                     fc_rescan_work_q_name[KOBJ_NAME_LEN];
         struct workqueue_struct *fc_rescan_work_q;
+        struct scsi_cmnd        **ScsiLookup;
+        spinlock_t                scsi_lookup_lock;
 } MPT_ADAPTER;
 
 /*
@@ -817,7 +819,6 @@ typedef struct _MPT_SCSI_HOST {
         MPT_ADAPTER              *ioc;
         int                       port;
         u32                       pad0;
-        struct scsi_cmnd        **ScsiLookup;
         MPT_LOCAL_REPLY          *pLocal;               /* used for internal commands */
         struct timer_list         timer;
                 /* Pool of memory for holding SCpnts before doing