ols: Fix stack clobbering at start of acquisition

[libsigrok.git] / hardware / openbench-logic-sniffer / api.c

diff --git a/hardware/openbench-logic-sniffer/api.c b/hardware/openbench-logic-sniffer/api.c
index cab998966142c856dc7c7e39adba00de4dab68ab..a744fc5a86e7d9e3dd4f0b2a21d77b1487a76f05 100644 (file)
--- a/hardware/openbench-logic-sniffer/api.c
+++ b/hardware/openbench-logic-sniffer/api.c
@@ -395,7 +395,7 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
        readcount = MIN(devc->max_samples / num_channels, devc->limit_samples) / 4;
 
        memset(trigger_config, 0, 16);
-       trigger_config[devc->num_stages - 1] |= 0x08;
+       trigger_config[devc->num_stages] |= 0x08;
        if (devc->trigger_mask[0]) {
                delaycount = readcount * (1 - devc->capture_ratio / 100.0);
                devc->trigger_at = (readcount - delaycount) * 4 - devc->num_stages;