X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=hardware%2Falsa%2Fapi.c;h=43d9b51b5543484605f11826682f076ad8e4f27e;hb=e73ffd4238c6d1be58d3fcdcf7f100200f033856;hp=2e674fff6e3fe151aa2233108212aeab11ccfe3b;hpb=efdecf4c0553ce00ea2a6365212f5fe305496fed;p=libsigrok.git

diff --git a/hardware/alsa/api.c b/hardware/alsa/api.c
index 2e674fff..43d9b51b 100644
--- a/hardware/alsa/api.c
+++ b/hardware/alsa/api.c
@@ -92,6 +92,8 @@ static int hw_dev_open(struct sr_dev_inst *sdi)
 		return SR_ERR;
 	}
 
+	sdi->status = SR_ST_ACTIVE;
+
 	return SR_OK;
 }
 
@@ -108,6 +110,7 @@ static int hw_dev_close(struct sr_dev_inst *sdi)
 			sr_err("Failed to close device: %s.",
 			       snd_strerror(ret));
 			devc->capture_handle = NULL;
+            sdi->status = SR_ST_INACTIVE;
 		}
 	} else {
 		sr_dbg("No capture handle, no need to close audio device.");
@@ -143,6 +146,9 @@ 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_DEV_CLOSED;
+
 	devc = sdi->priv;
 
 	switch (id) {
@@ -203,6 +209,9 @@ static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi,
 	int count, ret;
 	char *endianness;
 
+	if (sdi->status != SR_ST_ACTIVE)
+		return SR_ERR_DEV_CLOSED;
+
 	devc = sdi->priv;
 	devc->cb_data = cb_data;
 	devc->num_samples = 0;