[SCSI] allow sleeping in ->eh_bus_reset_handler()

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
index 13da268..f2aff3f 100644
--- a/drivers/scsi/lpfc/lpfc_scsi.c
+++ b/drivers/scsi/lpfc/lpfc_scsi.c
@@ -1054,7 +1054,7 @@
  * Note: midlayer calls this function with the host_lock held
  */
 static int
-lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
+__lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
 {
 	struct Scsi_Host *shost = cmnd->device->host;
 	struct lpfc_hba *phba = (struct lpfc_hba *)shost->hostdata[0];
@@ -1144,6 +1144,16 @@
 }
 
 static int
+lpfc_reset_bus_handler(struct scsi_cmnd *cmnd)
+{
+	int rc;
+	spin_lock_irq(cmnd->device->host->host_lock);
+	rc = __lpfc_reset_bus_handler(cmnd);
+	spin_unlock_irq(cmnd->device->host->host_lock);
+	return rc;
+}
+
+static int
 lpfc_slave_alloc(struct scsi_device *sdev)
 {
 	struct lpfc_hba *phba = (struct lpfc_hba *)sdev->host->hostdata[0];