5045 use atomic_{inc,dec}_* instead of atomic_add_*

@@ -1840,11 +1840,11 @@
         /* TODO: Use correct offset and size for syncing? */
         if (ddi_dma_sync(acb->ccbs_pool_handle, 0, 0, DDI_DMA_SYNC_FORDEV) ==
             DDI_FAILURE)
                 return (DDI_FAILURE);
 
-        atomic_add_32(&acb->ccboutstandingcount, 1);
+        atomic_inc_32(&acb->ccboutstandingcount);
         ccb->ccb_time = (time_t)(ddi_get_time() + pkt->pkt_time);
 
         ccb->ccb_state = ARCMSR_CCB_START;
         switch (acb->adapter_type) {
         case ACB_ADAPTER_TYPE_A:

@@ -1953,11 +1953,11 @@
                 mutex_enter(&acb->isr_mutex);
         } else {
                 scsi_hba_pkt_comp(pkt);
         }
         if (flag == 1) {
-                atomic_add_32(&acb->ccboutstandingcount, -1);
+                atomic_dec_32(&acb->ccboutstandingcount);
         }
 }
 
 static void
 arcmsr_report_ccb_state(struct ACB *acb, struct CCB *ccb, boolean_t error)