--- zzzz-none-000/linux-4.1.52/include/linux/bug.h	2018-05-28 02:26:45.000000000 +0000
+++ bcm63-7530ax-731/linux-4.1.52/include/linux/bug.h	2022-03-02 11:37:13.000000000 +0000
@@ -81,7 +81,17 @@
  * build time, you should use BUILD_BUG to detect if it is
  * unexpectedly used.
  */
+#if defined(CONFIG_BCM_KF_BUZZZ) && defined(CONFIG_BUZZZ_FUNC) && defined(BUZZZ_O0)
+/**
+ * When compiled with -O0 to disable inlining, compile time constant evaluation
+ * (of size parameter) in several inline kernel function will result in a
+ * switch default case implemented as a BUILD_BUG().
+ * E.g. include/asm percpu.h __percpi_##op(), cmpxchg.h __xchg(), ...
+ */
+#define BUILD_BUG() do { } while (0)
+#else
 #define BUILD_BUG() BUILD_BUG_ON_MSG(1, "BUILD_BUG failed")
+#endif
 
 #endif	/* __CHECKER__ */
 
@@ -102,8 +112,9 @@
 
 #else	/* !CONFIG_GENERIC_BUG */
 
-static inline enum bug_trap_type report_bug(unsigned long bug_addr,
-					    struct pt_regs *regs)
+static inline enum bug_trap_type report_bug(
+				unsigned long bug_addr __maybe_unused,
+				struct pt_regs *regs __maybe_unused)
 {
 	return BUG_TRAP_TYPE_BUG;
 }