diff --git a/drivers/staging/comedi/drivers/addi_apci_1564.c b/drivers/staging/comedi/drivers/addi_apci_1564.c
index cf544ab1fc65..47b63e176c08 100644
--- a/drivers/staging/comedi/drivers/addi_apci_1564.c
+++ b/drivers/staging/comedi/drivers/addi_apci_1564.c
@@ -95,8 +95,7 @@ static irqreturn_t apci1564_interrupt(int irq, void *d)
 
 		s->state = inl(dev->iobase + APCI1564_DI_INT_STATUS_REG)
 			       & 0xffff;
-		comedi_buf_put(s, s->state);
-		s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS;
+		comedi_buf_write_samples(s, &s->state, 1);
 		comedi_handle_events(dev, s);
 
 		/* enable the interrupt */