--- zzzz-none-000/linux-4.1.52/include/linux/sysrq.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/sysrq.h	2022-03-02 11:37:13.000000000 +0000
@@ -47,6 +47,9 @@
 int register_sysrq_key(int key, struct sysrq_key_op *op);
 int unregister_sysrq_key(int key, struct sysrq_key_op *op);
 struct sysrq_key_op *__sysrq_get_key_op(int key);
+#if defined(CONFIG_BCM_KF_CHAR_SYSRQ)
+bool sysrq_on(void);
+#endif
 
 int sysrq_toggle_support(int enable_mask);