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[SCSI] mpt fusion: lock down ScsiLookup

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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>
This commit is contained in:
Eric Moore
2007-09-29 10:16:53 -06:00
committed by James Bottomley
parent bc6e089a13
commit e8206381f5
5 changed files with 149 additions and 87 deletions
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3
drivers/message/fusion/mptbase.h
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@ -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