Clarify the logic in esp_transfer_data() to ensure that the deferred interrupt code
can only be triggered for CMD_SEL, CMD_SELATN and CMD_TI commands. This should already
be the case, but make it explicit to ensure the logic isn't triggered unexpectedly.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/scsi/esp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c
index ac841dc32e..5723290d62 100644
--- a/hw/scsi/esp.c
+++ b/hw/scsi/esp.c
@@ -1015,6 +1015,7 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len)
              */
              s->rregs[ESP_RINTR] |= INTR_BS | INTR_FC;
              s->rregs[ESP_RSEQ] = SEQ_CD;
+             esp_raise_irq(s);
              break;
 
         case CMD_SELATNS | CMD_DMA:
@@ -1025,6 +1026,7 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len)
              */
              s->rregs[ESP_RINTR] |= INTR_BS;
              s->rregs[ESP_RSEQ] = SEQ_MO;
+             esp_raise_irq(s);
              break;
 
         case CMD_TI | CMD_DMA:
@@ -1035,10 +1037,9 @@ void esp_transfer_data(SCSIRequest *req, uint32_t len)
              */
             s->rregs[ESP_CMD] = 0;
             s->rregs[ESP_RINTR] |= INTR_BS;
+            esp_raise_irq(s);
             break;
         }
-
-        esp_raise_irq(s);
     }
 
     /*
-- 
2.39.5