diff --git a/drivers/sensors/sensor.c b/drivers/sensors/sensor.c
index 89afd4c935a..e4e67ec5fc6 100644
--- a/drivers/sensors/sensor.c
+++ b/drivers/sensors/sensor.c
@@ -1094,6 +1094,7 @@ static int sensor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
 
           if (upper->state.nsubscribers == 0)
             {
+              sminfo(upper->name, "sensor not activated");
               return -EINVAL;
             }
 
@@ -1108,6 +1109,7 @@ static int sensor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
               ret = lower->ops->flush(lower, filep);
               if (ret >= 0)
                 {
+                  sminfo(upper->name, "flushing start");
                   user->flushing = true;
                 }
             }
@@ -1130,6 +1132,8 @@ static int sensor_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
                 {
                   ret = 0;
                 }
+
+              sminfo(upper->name, "flush complete with result:%d", ret);
             }
         }
         break;
@@ -1239,6 +1243,7 @@ static ssize_t sensor_push_event(FAR void *priv, FAR const void *data,
               user->flushing = false;
               user->event |= SENSOR_EVENT_FLUSH_COMPLETE;
               sensor_pollnotify_one(user, POLLPRI, user->role);
+              sminfo(upper->name, "flush complete, poll notify");
             }
         }
 
diff --git a/drivers/sensors/sensor_rpmsg.c b/drivers/sensors/sensor_rpmsg.c
index 4485b5b4246..99b3f0bc03b 100644
--- a/drivers/sensors/sensor_rpmsg.c
+++ b/drivers/sensors/sensor_rpmsg.c
@@ -806,7 +806,9 @@ static int sensor_rpmsg_flush(FAR struct sensor_lowerhalf_s *lower,
     }
   else
     {
+      sminfo(dev->name, "rpmsg flushing");
       ret = sensor_rpmsg_ioctl(dev, SNIOC_FLUSH, 0, 0, true);
+      sminfo(dev->name, "rpmsg flush send done, ret:%d", ret);
     }
 
   return ret;
@@ -1366,6 +1368,7 @@ static int sensor_rpmsg_ioctl_handler(FAR struct rpmsg_endpoint *ept,
           msg->result = file_ioctl(&stub->file, msg->request, arg);
           if (msg->result >= 0 && msg->request == SNIOC_FLUSH)
             {
+              sminfo(dev->name, "receiving flush request");
               stub->flushing = true;
             }