add sanity check to queuing of packets in rawiso xmit

git-svn-id: svn://svn.linux1394.org/libraw1394/trunk@159 53a565d1-3bb7-0310-b661-cf11e63c67ab

1 files changed, 4 insertions, 1 deletions

diff --git a/src/iso.c b/src/iso.c
index 9e19e49..914b3ec 100644
--- a/src/iso.c
+++ b/src/iso.c
@@ -269,7 +269,6 @@ int raw1394_iso_recv_start(raw1394handle_t handle, int start_on_cycle, int tag_m
 	return 0;
 }
 
-
 static int _raw1394_iso_xmit_queue_packets(raw1394handle_t handle)
 {
 	struct raw1394_iso_status *stat = &handle->iso_status;
@@ -282,6 +281,10 @@ static int _raw1394_iso_xmit_queue_packets(raw1394handle_t handle)
 		goto out;
 	}
 
+	/* ensure stat->n_packets is sane */
+	if (stat->n_packets > stat->config.buf_packets)
+		stat->n_packets = stat->config.buf_packets;
+
 	/* we could potentially send up to stat->n_packets packets */
 	packets.n_packets = 0;
 	packets.infos = malloc(stat->n_packets * sizeof(struct raw1394_iso_packet_info));