[PATCH 2/2] Block I/O while SG reset operation in progress - the lpfc driver portion

[James Smart <James.Smart@Emulex.Com>]

This removes the duplicate functionality which had been added
to the lpfc driver.

-- james s

Signed-off-by: James Smart <James.Smart@emulex.com>

diff -upNr a/lpfc.h b/lpfc.h
--- a/lpfc.h	2006-02-23 09:43:02.000000000 -0500
+++ b/lpfc.h	2006-02-23 09:58:23.000000000 -0500
@@ -176,7 +176,6 @@ struct lpfc_hba {
  	dma_addr_t slim2p_mapping;
  	uint16_t pci_cfg_value;

-	struct semaphore hba_can_block;
  	int32_t hba_state;

  #define LPFC_STATE_UNKNOWN        0    /* HBA state is unknown */
diff -upNr a/lpfc_init.c b/lpfc_init.c
--- a/lpfc_init.c	2006-02-23 09:43:02.000000000 -0500
+++ b/lpfc_init.c	2006-02-23 09:58:31.000000000 -0500
@@ -1463,7 +1463,6 @@ lpfc_pci_probe_one(struct pci_dev *pdev,
  		goto out_put_host;

  	host->unique_id = phba->brd_no;
-	init_MUTEX(&phba->hba_can_block);
  	INIT_LIST_HEAD(&phba->ctrspbuflist);
  	INIT_LIST_HEAD(&phba->rnidrspbuflist);
  	INIT_LIST_HEAD(&phba->freebufList);
diff -upNr a/lpfc_scsi.c b/lpfc_scsi.c
--- a/lpfc_scsi.c	2006-02-23 09:43:02.000000000 -0500
+++ b/lpfc_scsi.c	2006-02-23 09:58:41.000000000 -0500
@@ -41,20 +41,6 @@
  #define LPFC_ABORT_WAIT  2


-static inline void
-lpfc_block_requests(struct lpfc_hba * phba)
-{
-	down(&phba->hba_can_block);
-	scsi_block_requests(phba->host);
-}
-
-static inline void
-lpfc_unblock_requests(struct lpfc_hba * phba)
-{
-	scsi_unblock_requests(phba->host);
-	up(&phba->hba_can_block);
-}
-
  /*
   * This routine allocates a scsi buffer, which contains all the necessary
   * information needed to initiate a SCSI I/O.  The non-DMAable buffer region
@@ -891,7 +877,6 @@ lpfc_abort_handler(struct scsi_cmnd *cmn
  	unsigned int loop_count = 0;
  	int ret = SUCCESS;

-	lpfc_block_requests(phba);
  	spin_lock_irq(shost->host_lock);

  	lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble;
@@ -977,7 +962,6 @@ lpfc_abort_handler(struct scsi_cmnd *cmn
  			cmnd->device->lun, cmnd->serial_number);

  	spin_unlock_irq(shost->host_lock);
-	lpfc_unblock_requests(phba);

  	return ret;
  }
@@ -995,7 +979,6 @@ lpfc_reset_lun_handler(struct scsi_cmnd
  	int ret = FAILED;
  	int cnt, loopcnt;

-	lpfc_block_requests(phba);
  	spin_lock_irq(shost->host_lock);
  	/*
  	 * If target is not in a MAPPED state, delay the reset until
@@ -1091,7 +1074,6 @@ out_free_scsi_buf:

  out:
  	spin_unlock_irq(shost->host_lock);
-	lpfc_unblock_requests(phba);
  	return ret;
  }

@@ -1107,7 +1089,6 @@ lpfc_reset_bus_handler(struct scsi_cmnd
  	unsigned int midlayer_id = 0;
  	struct lpfc_scsi_buf * lpfc_cmd;

-	lpfc_block_requests(phba);
  	spin_lock_irq(shost->host_lock);

  	lpfc_cmd = lpfc_get_scsi_buf(phba);
@@ -1193,7 +1174,6 @@ lpfc_reset_bus_handler(struct scsi_cmnd
  			phba->brd_no, ret);
  out:
  	spin_unlock_irq(shost->host_lock);
-	lpfc_unblock_requests(phba);
  	return ret;
  }