[SCSI] - fusion - mptfc bug fix's to prevent deadlock situations

mptbase.h

	bump version number to 3.03.09

	remove unneeded flags
	define workq and remove old fc specific locks

mptbase.c

	initialize new lock and don't initialize two removed locks

mptscsih.c

	when firmware reports target is no longer there, return
        DID_REQUEUE for fc hosts so that i/o doesn't get killed until
        the transport has an opportunity to manage the loss via its
        dev loss timer

	when the "eh_abort" routine is called, check to see if the
        driver has the command or not before looking to see if a reset
        is pending.  James Smart and I talked about this and believe
        that the API for this routine is: if driver doesn't have
        command, return SUCCESS.  This change helps prevent a target
        from being taken offline.  SUCCESS is returned because it's
        likely that the command completed after error recovery timed
        it out but before it could be aborted.

	provide a routine to queue work to newly created workq, and
        use it.

	remove "ioc" from mptscsih_abort() it was only used one time.
	the other references were via hd->ioc, so I just moved it....
	net change in references to ioc via hd->ioc is zero

	move hd->resetPending test and hd->timeouts increment to after
	the test for whether the command to be aborted remains known
	to the driver

	Make certain that the workq exists before queuing work to it.

mptfc.c

	no longer need to lock rport data structures as I was able to
	single thread the code!  I fixed up the debug code to
	eliminate compilation messages due to type mismatch in the
	printk.  Got rid of some no longer needed rport flags.
	Initialize and destroy the workq used for the rescan work.

	simplify the logic regarding the increment of
        fc_rescan_work_count.  use post increment and test for zero
        vs. pre increment and test for one; eliminate work_count
        variable: queue_work can be called with the work_lock held as
        it doesn't sleep

Signed-off-by: Michael Reed <mdr@sgi.com>
Signed-off-by: Eric Moore <Eric.Moore@lsil.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 4 insertions, 6 deletions

diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index be7e8501b53c..f673cca507e1 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -76,8 +76,8 @@
 #define COPYRIGHT       "Copyright (c) 1999-2005 " MODULEAUTHOR
 #endif
 
-#define MPT_LINUX_VERSION_COMMON        "3.03.08"
-#define MPT_LINUX_PACKAGE_NAME          "@(#)mptlinux-3.03.08"
+#define MPT_LINUX_VERSION_COMMON        "3.03.09"
+#define MPT_LINUX_PACKAGE_NAME          "@(#)mptlinux-3.03.09"
 #define WHAT_MAGIC_STRING               "@" "(" "#" ")"
 
 #define show_mptmod_ver(s,ver)  \
@@ -489,7 +489,6 @@ typedef	struct _RaidCfgData {
 
 #define MPT_RPORT_INFO_FLAGS_REGISTERED 0x01    /* rport registered */
 #define MPT_RPORT_INFO_FLAGS_MISSING    0x02    /* missing from DevPage0 scan */
-#define MPT_RPORT_INFO_FLAGS_MAPPED_VDEV 0x04   /* target mapped in vdev */
 
 /*
  * data allocated for each fc rport device
@@ -501,7 +500,6 @@ struct mptfc_rport_info
         struct scsi_target *starget;
         FCDevicePage0_t pg0;
         u8              flags;
-        u8              remap_needed;
 };
 
 /*
@@ -628,11 +626,11 @@ typedef struct _MPT_ADAPTER
         struct work_struct       mptscsih_persistTask;
 
         struct list_head         fc_rports;
-        spinlock_t               fc_rport_lock; /* list and ri flags */
         spinlock_t               fc_rescan_work_lock;
         int                      fc_rescan_work_count;
         struct work_struct       fc_rescan_work;
-
+        char                     fc_rescan_work_q_name[KOBJ_NAME_LEN];
+        struct workqueue_struct *fc_rescan_work_q;
 } MPT_ADAPTER;
 
 /*