Enforce open device before config_set()/dev_acquisition_start()

[libsigrok.git] / hardware / serial-dmm / api.c

diff --git a/hardware/serial-dmm/api.c b/hardware/serial-dmm/api.c
index 8136f2979c8e44345414396590eedd7e670fdf7d..f59702cc3648ba4b108c01651775dada164a9e70 100644 (file)
--- a/hardware/serial-dmm/api.c
+++ b/hardware/serial-dmm/api.c
@@ -365,7 +365,7 @@ static int config_set(int id, GVariant *data, const struct sr_dev_inst *sdi)
        struct dev_context *devc;
 
        if (sdi->status != SR_ST_ACTIVE)
-               return SR_ERR;
+               return SR_ERR_DEV_CLOSED;
 
        if (!(devc = sdi->priv)) {
                sr_err("sdi->priv was NULL.");
@@ -417,6 +417,9 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
        struct dev_context *devc;
        struct sr_serial_dev_inst *serial;
 
+       if (sdi->status != SR_ST_ACTIVE)
+               return SR_ERR_DEV_CLOSED;
+
        if (!(devc = sdi->priv)) {
                sr_err("sdi->priv was NULL.");
                return SR_ERR_BUG;