4 files changed, 8 insertions, 3 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 4a4e4de45bc9..da29c3729cd9 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -252,6 +252,7 @@ struct qdio_irq {
 	struct ccw_device *cdev;
 	struct list_head entry;		/* list of thinint devices */
 	struct dentry *debugfs_dev;
+	u64 last_data_irq_time;
 
 	unsigned long int_parm;
 	struct subchannel_id schid;
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
index 728abf7e9ccb..d091ae12c367 100644
--- a/drivers/s390/cio/qdio_debug.c
+++ b/drivers/s390/cio/qdio_debug.c
@@ -105,8 +105,9 @@ static int qstat_show(struct seq_file *m, void *v)
 	if (!q)
 		return 0;
 
-	seq_printf(m, "Timestamp: %Lx  Last AI: %Lx\n",
-		   q->timestamp, last_ai_time);
+	seq_printf(m, "Timestamp: %llx\n", q->timestamp);
+	seq_printf(m, "Last Data IRQ: %llx  Last AI: %llx\n",
+		   q->irq_ptr->last_data_irq_time, last_ai_time);
 	seq_printf(m, "nr_used: %d  ftc: %d\n",
 		   atomic_read(&q->nr_buf_used), q->first_to_check);
 	if (q->is_input_q) {
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 3b1e8ed4ba14..c56b690f0a93 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -804,6 +804,7 @@ static void qdio_int_handler_pci(struct qdio_irq *irq_ptr)
 		return;
 
 	qdio_deliver_irq(irq_ptr);
+	irq_ptr->last_data_irq_time = S390_lowcore.int_clock;
 
 	if (!pci_out_supported(irq_ptr) || !irq_ptr->scan_threshold)
 		return;
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index e1b923633372..8e09bf3a2fcd 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -97,10 +97,11 @@ static inline u32 clear_shared_ind(void)
  */
 static void tiqdio_thinint_handler(struct airq_struct *airq, bool floating)
 {
+	u64 irq_time = S390_lowcore.int_clock;
 	u32 si_used = clear_shared_ind();
 	struct qdio_irq *irq;
 
-	last_ai_time = S390_lowcore.int_clock;
+	last_ai_time = irq_time;
 	inc_irq_stat(IRQIO_QAI);
 
 	/* protect tiq_list entries, only changed in activate or shutdown */
@@ -119,6 +120,7 @@ static void tiqdio_thinint_handler(struct airq_struct *airq, bool floating)
 		}
 
 		qdio_deliver_irq(irq);
+		irq->last_data_irq_time = irq_time;
 
 		QDIO_PERF_STAT_INC(irq, adapter_int);
 	}