--- zzzz-none-000/linux-4.19.183/kernel/locking/semaphore.c	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/kernel/locking/semaphore.c	2023-06-28 08:54:21.000000000 +0000
@@ -33,6 +33,9 @@
 #include <linux/semaphore.h>
 #include <linux/spinlock.h>
 #include <linux/ftrace.h>
+#if defined(CONFIG_AVM_FASTIRQ)
+#include  <asm/avm_enh/avm_fiq_os.h>
+#endif/*--- #if defined(CONFIG_AVM_FASTIRQ) ---*/
 
 static noinline void __down(struct semaphore *sem);
 static noinline int __down_interruptible(struct semaphore *sem);
@@ -261,3 +264,14 @@
 	waiter->up = true;
 	wake_up_process(waiter->task);
 }
+
+struct task_struct *__rte_sem_partial_wake(struct semaphore *sem)
+{
+	struct semaphore_waiter *waiter = list_first_entry(&sem->wait_list,
+						struct semaphore_waiter, list);
+
+	list_del(&waiter->list);
+	waiter->up = true;
+
+	return waiter->task;
+}