diff options
| -rw-r--r-- | hw/scsi/esp.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index d87e1a6..a79196f 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -496,6 +496,10 @@ static void do_dma_pdma_cb(ESPState *s) return; } + if (!s->current_req) { + return; + } + if (to_device) { /* Copy FIFO data to device */ len = MIN(s->async_len, ESP_FIFO_SZ); @@ -527,11 +531,9 @@ static void do_dma_pdma_cb(ESPState *s) return; } else { if (s->async_len == 0) { - if (s->current_req) { - /* Defer until the scsi layer has completed */ - scsi_req_continue(s->current_req); - s->data_in_ready = false; - } + /* Defer until the scsi layer has completed */ + scsi_req_continue(s->current_req); + s->data_in_ready = false; return; } @@ -604,6 +606,9 @@ static void esp_do_dma(ESPState *s) } return; } + if (!s->current_req) { + return; + } if (s->async_len == 0) { /* Defer until data is available. */ return; @@ -713,6 +718,10 @@ static void esp_do_nodma(ESPState *s) return; } + if (!s->current_req) { + return; + } + if (s->async_len == 0) { /* Defer until data is available. */ return; |