diff --git a/qdf/inc/qdf_hang_event_notifier.h b/qdf/inc/qdf_hang_event_notifier.h
new file mode 100644
index 000000000000..f13787393948
--- /dev/null
+++ b/qdf/inc/qdf_hang_event_notifier.h
@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+ /**
+  * DOC: qdf_hang_event_notifier
+  * This file provides OS dependent QDF notifier call for hang event
+  */
+
+#ifndef QDF_HANG_EVENT_NOTIFIER_H
+#define QDF_HANG_EVENT_NOTIFIER_H
+
+#include <qdf_notifier.h>
+
+#define QDF_HANG_EVENT_VERSION "1.0"
+#define QDF_HANG_EVENT_DATA_SIZE 784
+
+/**
+ * qdf_notifier_data - Private data for notifier data
+ * @hang_data: Data filled by notifier
+ * @offset: Current offset of the hang data buffer
+ */
+struct qdf_notifer_data {
+	uint8_t *hang_data;
+	unsigned int offset;
+};
+
+#ifdef WLAN_HANG_EVENT
+/**
+ * qdf_hang_event_register_notifier() - Hang data notifier register
+ * @nb: Notifier block
+ *
+ * This function registers notifier block for the hang data notifier chain
+ * the registered function will be invoked when the hang data notifier call
+ * is invoked.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS qdf_hang_event_register_notifier(qdf_notif_block *nb);
+
+/**
+ * qdf_hang_event_unregister_notifier() - Hang data notifier unregister
+ * @nb: Notifier block
+ *
+ * This function unregisters notifier block for the hang data notifier chain.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS qdf_hang_event_unregister_notifier(qdf_notif_block *nb);
+
+/**
+ * qdf_hang_event_notifier_call() - Hang data notifier register
+ * @v: state
+ * @data: Private data for this notifier chain
+ *
+ * This function when invoked will call the functions registered with this
+ * notifier chain.
+ *
+ * Return: QDF_STATUS
+ */
+QDF_STATUS qdf_hang_event_notifier_call(unsigned long v, void *data);
+#else
+static inline
+QDF_STATUS qdf_hang_event_register_notifier(qdf_notif_block *nb)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline
+QDF_STATUS qdf_hang_event_unregister_notifier(qdf_notif_block *nb)
+{
+	return QDF_STATUS_SUCCESS;
+}
+
+static inline
+QDF_STATUS qdf_hang_event_notifier_call(unsigned long v, void *data)
+{
+	return QDF_STATUS_SUCCESS;
+}
+#endif
+#endif
diff --git a/qdf/src/qdf_hang_event_notifier.c b/qdf/src/qdf_hang_event_notifier.c
new file mode 100644
index 000000000000..09b1761b6517
--- /dev/null
+++ b/qdf/src/qdf_hang_event_notifier.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+ /**
+  * DOC: qdf_hang_event_notifier
+  * This file provides OS dependent QDF notifier call for hang event
+  */
+
+#include <i_qdf_notifier.h>
+#include <qdf_notifier.h>
+#include <qdf_hang_event_notifier.h>
+
+static qdf_atomic_notifier_init(qdf_hang_event_notif_head)
+
+QDF_STATUS qdf_hang_event_register_notifier(qdf_notif_block *nb)
+{
+	return qdf_register_atomic_notifier_chain(&qdf_hang_event_notif_head,
+						  nb);
+}
+
+QDF_STATUS qdf_hang_event_unregister_notifier(qdf_notif_block *nb)
+{
+	return qdf_unregister_atomic_notifier_chain(&qdf_hang_event_notif_head,
+						    nb);
+}
+
+QDF_STATUS qdf_hang_event_notifier_call(unsigned long v, void *data)
+{
+	return qdf_atomic_notfier_call(&qdf_hang_event_notif_head,
+					 v, data);
+}
diff --git a/qdf/src/qdf_notifier.c b/qdf/src/qdf_notifier.c
index c460647a8c59..6351831e98ff 100644
--- a/qdf/src/qdf_notifier.c
+++ b/qdf/src/qdf_notifier.c
@@ -39,11 +39,11 @@ QDF_STATUS qdf_unregister_blocking_notifier_chain(qdf_blocking_notif_head *head,
 }
 
 QDF_STATUS qdf_blocking_notfier_call(qdf_blocking_notif_head *head,
-				     unsigned long v, void *data)
+				     unsigned long state, void *data)
 {
 	int ret;
 
-	ret = __qdf_blocking_notfier_call(head, v, data);
+	ret = __qdf_blocking_notfier_call(head, state, data);
 
 	return qdf_status_from_os_return(ret);
 }