MainBar: Disallow negative sample rates

diff --git a/pv/toolbars/mainbar.cpp b/pv/toolbars/mainbar.cpp
index d78a153f160d0f14e45969572cfe671269ba07f0..3ee62f4c3dabbd519ced10b1f26c4f410bb2742e 100644 (file)
--- a/pv/toolbars/mainbar.cpp
+++ b/pv/toolbars/mainbar.cpp
@@ -509,8 +509,8 @@ void MainBar::commit_sample_rate()
        const shared_ptr<sigrok::Device> sr_dev = device->device();
 
        sample_rate = sample_rate_.value();
-       if (sample_rate == 0)
-               return;
+       if (sample_rate < 0)
+               sample_rate_.set_value(0);
 
        try {
                sr_dev->config_set(ConfigKey::SAMPLERATE,