2 files changed, 3 insertions, 22 deletions

diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 8412bb992ea1..22e418db4518 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -443,8 +443,6 @@ struct zfcp_adapter {
         spinlock_t              req_list_lock;     /* request list lock */
         struct zfcp_qdio_queue  req_q;             /* request queue */
         spinlock_t              req_q_lock;        /* for operations on queue */
-        int                     req_q_pci_batch;   /* SBALs since PCI indication
-                                                      was last set */
         ktime_t                 req_q_time; /* time of last fill level change */
         u64                     req_q_util; /* for accounting */
         spinlock_t              qdio_stat_lock;
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index c2eb94f6370f..e0a215309df0 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -11,9 +11,6 @@
 
 #include "zfcp_ext.h"
 
-/* FIXME(tune): free space should be one max. SBAL chain plus what? */
-#define ZFCP_QDIO_PCI_INTERVAL  (QDIO_MAX_BUFFERS_PER_Q \
-                                - (FSF_MAX_SBALS_PER_REQ + 4))
 #define QBUFF_PER_PAGE          (PAGE_SIZE / sizeof(struct qdio_buffer))
 
 static int zfcp_qdio_buffers_enqueue(struct qdio_buffer **sbal)
@@ -364,23 +361,12 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req)
         struct zfcp_qdio_queue *req_q = &adapter->req_q;
         int first = fsf_req->sbal_first;
         int count = fsf_req->sbal_number;
-        int retval, pci, pci_batch;
-        struct qdio_buffer_element *sbale;
-
-        /* acknowledgements for transferred buffers */
-        pci_batch = adapter->req_q_pci_batch + count;
-        if (unlikely(pci_batch >= ZFCP_QDIO_PCI_INTERVAL)) {
-                pci_batch %= ZFCP_QDIO_PCI_INTERVAL;
-                pci = first + count - (pci_batch + 1);
-                pci %= QDIO_MAX_BUFFERS_PER_Q;
-                sbale = zfcp_qdio_sbale(req_q, pci, 0);
-                sbale->flags |= SBAL_FLAGS0_PCI;
-        }
+        int retval;
+        unsigned int qdio_flags = QDIO_FLAG_SYNC_OUTPUT;
 
         zfcp_qdio_account(adapter);
 
-        retval = do_QDIO(adapter->ccw_device, QDIO_FLAG_SYNC_OUTPUT, 0, first,
-                         count);
+        retval = do_QDIO(adapter->ccw_device, qdio_flags, 0, first, count);
         if (unlikely(retval)) {
                 zfcp_qdio_zero_sbals(req_q->sbal, first, count);
                 return retval;
@@ -390,7 +376,6 @@ int zfcp_qdio_send(struct zfcp_fsf_req *fsf_req)
         atomic_sub(count, &req_q->count);
         req_q->first += count;
         req_q->first %= QDIO_MAX_BUFFERS_PER_Q;
-        adapter->req_q_pci_batch = pci_batch;
         return 0;
 }
 
@@ -461,7 +446,6 @@ void zfcp_qdio_close(struct zfcp_adapter *adapter)
         }
         req_q->first = 0;
         atomic_set(&req_q->count, 0);
-        adapter->req_q_pci_batch = 0;
         adapter->resp_q.first = 0;
         atomic_set(&adapter->resp_q.count, 0);
 }
@@ -499,7 +483,6 @@ int zfcp_qdio_open(struct zfcp_adapter *adapter)
         /* set index of first avalable SBALS / number of available SBALS */
         adapter->req_q.first = 0;
         atomic_set(&adapter->req_q.count, QDIO_MAX_BUFFERS_PER_Q);
-        adapter->req_q_pci_batch = 0;
 
         return 0;