Don't attempt to set SR_CONF_LIMIT_SAMPLES when it's not supported

diff --git a/pv/toolbars/samplingbar.cpp b/pv/toolbars/samplingbar.cpp
index 78f6e1cef53a7929bd87b86914a5404ca53eabef..be29e74bb534643183fd739e5d1785f63f974e22 100644 (file)
--- a/pv/toolbars/samplingbar.cpp
+++ b/pv/toolbars/samplingbar.cpp
@@ -316,7 +316,8 @@ void SamplingBar::commit_sample_count()
        // Set the sample count
        assert(!_updating_sample_count);
        _updating_sample_count = true;
-       if (!dev_inst->set_config(NULL, SR_CONF_LIMIT_SAMPLES,
+       if (_sample_count_supported &&
+               !dev_inst->set_config(NULL, SR_CONF_LIMIT_SAMPLES,
                g_variant_new_uint64(sample_count))) {
                qDebug() << "Failed to configure sample count.";
                return;