1 files changed, 7 insertions, 3 deletions
diff --git a/io-module/radio_udev_discovery.c b/io-module/radio_udev_discovery.c
index c6cc98a..88f5d0d 100644
--- a/io-module/radio_udev_discovery.c
+++ b/io-module/radio_udev_discovery.c
@@ -52,9 +52,13 @@ verify_vpid(struct sig_pid_radio_reset_monitor_s *p)
     mutex_unlock(&mts_io_mutex);
     rcu_read_lock();
     vpid1 = find_vpid((pid_t)pid0);
-    if(vpid1 != NULL)
-        vcount = refcount_read(&vpid1->count);
-    else
+    if(vpid1 != NULL) {
+        #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,15,0)
+            vcount = refcount_read(&vpid1->count);
+        #else
+            vcount = atomic_read(&vpid1->count);
+        #fi
+    } else
         vcount = 0;
     rcu_read_unlock();
     mutex_lock(&mts_io_mutex);