X-Git-Url: https://git.ao2.it/libam7xxx.git/blobdiff_plain/fc26cf192559400a4dce1341dbb691fc5c987b96..5c988a910c5c32462da462263ea7cb63daecebbc:/src/am7xxx.c

diff --git a/src/am7xxx.c b/src/am7xxx.c
index 08858cd..47f79ea 100644
--- a/src/am7xxx.c
+++ b/src/am7xxx.c
@@ -386,16 +386,17 @@ static int read_header(am7xxx_device *dev, struct am7xxx_header *h)
 
 	unserialize_header(dev->buffer, h);
 
-	debug_dump_header(dev->ctx, h);
-
 	if (h->direction == AM7XXX_DIRECTION_IN) {
 		ret = 0;
 	} else {
 		error(dev->ctx,
-		      "Received a packet with direction AM7XXX_DIRECTION_OUT, weird!\n");
+		      "Expected an AM7XXX_DIRECTION_IN packet, got one with direction = %d. Weird!\n",
+		      h->direction);
 		ret = -EINVAL;
 	}
 
+	debug_dump_header(dev->ctx, h);
+
 out:
 	return ret;
 }
@@ -406,7 +407,13 @@ static int send_header(am7xxx_device *dev, struct am7xxx_header *h)
 
 	debug_dump_header(dev->ctx, h);
 
+	/* For symmetry with read_header() we should check here for
+	 * h->direction == AM7XXX_DIRECTION_OUT but we just ensure that in all
+	 * the callers and save some cycles here.
+	 */
+
 	serialize_header(h, dev->buffer);
+
 	ret = send_data(dev, dev->buffer, AM7XXX_HEADER_WIRE_SIZE);
 	if (ret < 0)
 		error(dev->ctx, "failed to send data\n");
@@ -453,8 +460,6 @@ static am7xxx_device *add_new_device(am7xxx_context *ctx)
 		return NULL;
 	}
 
-	devices_list = &(ctx->devices_list);
-
 	new_device = malloc(sizeof(*new_device));
 	if (new_device == NULL) {
 		fatal("cannot allocate a new device (%s)\n", strerror(errno));
@@ -464,6 +469,8 @@ static am7xxx_device *add_new_device(am7xxx_context *ctx)
 
 	new_device->ctx = ctx;
 
+	devices_list = &(ctx->devices_list);
+
 	if (*devices_list == NULL) {
 		*devices_list = new_device;
 	} else {