[SCSI] mpt2sas: Prevent sending command to FW while Host Reset

This patch renames the flag for indicating host reset from
ioc_reset_in_progress to shost_recovery. It also removes the spin locks
surrounding the setting of this flag, which are unnecessary.   Sanity checks on
the shost_recovery flag were added thru out the code so as to prevent sending
firmware commands during host reset.  Also, the setting of the shost state to
SHOST_RECOVERY was removed to prevent deadlocks, this is actually better
handled by the shost_recovery flag.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Reviewed-by: Eric Moore <Eric.moore@lsi.com>
Cc: Stable Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.h b/drivers/scsi/mpt2sas/mpt2sas_base.h
index 998a7b847b3d..15827582a90e 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.h
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.h
@@ -432,7 +432,7 @@ typedef void (*MPT_ADD_SGE)(void *paddr, u32 flags_length, dma_addr_t dma_addr);
  * @fw_event_list: list of fw events
  * @aen_event_read_flag: event log was read
  * @broadcast_aen_busy: broadcast aen waiting to be serviced
- * @ioc_reset_in_progress: host reset in progress
+ * @shost_recovery: host reset in progress
  * @ioc_reset_in_progress_lock:
  * @ioc_link_reset_in_progress: phy/hard reset in progress
  * @ignore_loginfos: ignore loginfos during task managment
@@ -545,7 +545,6 @@ struct MPT2SAS_ADAPTER {
          /* misc flags */
         int             aen_event_read_flag;
         u8              broadcast_aen_busy;
-        u8              ioc_reset_in_progress;
         u8              shost_recovery;
         spinlock_t      ioc_reset_in_progress_lock;
         u8              ioc_link_reset_in_progress;