diff --git a/hw/scsi/esp.c b/hw/scsi/esp.c index 6c62417985..604fb9235d 100644 --- a/hw/scsi/esp.c +++ b/hw/scsi/esp.c @@ -1127,6 +1127,7 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) */ val = s->rregs[ESP_RINTR]; s->rregs[ESP_RINTR] = 0; + esp_lower_irq(s); s->rregs[ESP_RSTAT] &= ~STAT_TC; /* * According to the datasheet ESP_RSEQ should be cleared, but as the @@ -1137,7 +1138,6 @@ uint64_t esp_reg_read(ESPState *s, uint32_t saddr) * * s->rregs[ESP_RSEQ] = SEQ_0; */ - esp_lower_irq(s); break; case ESP_TCHI: /* Return the unique id if the value has never been written */
Both esp_raise_irq() and esp_lower_irq() check the STAT_INT bit in ESP_RSTAT to ensure that the IRQ is raised or lowered if its state changes. When reading ESP_RINTR, esp_lower_irq() was being called *after* ESP_RSTAT had been cleared meaning that STAT_INT was already clear, and so if STAT_INT was asserted beforehand then the esp_lower_irq() would have no effect. Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> --- hw/scsi/esp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)