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-rw-r--r--src/drivers/px4io/px4io.cpp9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/drivers/px4io/px4io.cpp b/src/drivers/px4io/px4io.cpp
index 663609aed..5895a4eb5 100644
--- a/src/drivers/px4io/px4io.cpp
+++ b/src/drivers/px4io/px4io.cpp
@@ -572,6 +572,14 @@ PX4IO::task_main()
_t_param = orb_subscribe(ORB_ID(parameter_update));
orb_set_interval(_t_param, 500); /* 2Hz update rate max. */
+ if ((_t_actuators < 0) ||
+ (_t_armed < 0) ||
+ (_t_vstatus < 0) ||
+ (_t_param < 0)) {
+ log("subscription(s) failed");
+ goto out;
+ }
+
/* poll descriptor */
pollfd fds[4];
fds[0].fd = _t_actuators;
@@ -668,6 +676,7 @@ PX4IO::task_main()
unlock();
+out:
debug("exiting");
/* clean up the alternate device node */