zeroplus: Ignore capture ratio if there is no trigger

If there is no trigger, don't try to capture anything before it. There
won't be any because we trigger immediately.

Signed-off-by: Russ Dill <redacted>

diff --git a/hardware/zeroplus-logic-cube/protocol.c b/hardware/zeroplus-logic-cube/protocol.c
index 0f68350e3ad1f700390abc888876ec20e0b6abfa..205bf560e168f45f043f11385cadf0e149222203 100644 (file)
--- a/hardware/zeroplus-logic-cube/protocol.c
+++ b/hardware/zeroplus-logic-cube/protocol.c
@@ -98,7 +98,11 @@ SR_PRIV void set_triggerbar(struct dev_context *devc)
        trigger_depth = get_memory_size(devc->memory_size) / 4;
        if (devc->limit_samples < trigger_depth)
                trigger_depth = devc->limit_samples;
-       triggerbar = trigger_depth * devc->capture_ratio / 100;
+
+       if (devc->trigger)
+               triggerbar = trigger_depth * devc->capture_ratio / 100;
+       else
+               triggerbar = 0;
 
        ramsize_trigger = trigger_depth - triggerbar;
        /* Matches USB packet captures from official app/driver */