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scsi: esp: respect FIFO invariant after message phase

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The FIFO contains two bytes; hence the write ptr should be two bytes ahead
of the read pointer.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-06-14 15:10:24 +02:00
parent d3cdc49138
commit d020aa504c
1 changed files with 1 additions and 1 deletions
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2
hw/scsi/esp.c
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@ -222,7 +222,7 @@ static void write_response(ESPState *s)
} else { } else {
s->ti_size = 2; s->ti_size = 2;
s->ti_rptr = 0; s->ti_rptr = 0;
s->ti_wptr = 0; s->ti_wptr = 2;
s->rregs[ESP_RFLAGS] = 2; s->rregs[ESP_RFLAGS] = 2;
} }
esp_raise_irq(s); esp_raise_irq(s);