--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -50,6 +50,9 @@ extern void pci_console_init(const char
 
 static unsigned long long MAX_MEMORY = 512ull << 20;
 
+DEFINE_SEMAPHORE(octeon_bootbus_sem);
+EXPORT_SYMBOL(octeon_bootbus_sem);
+
 struct octeon_boot_descriptor *octeon_boot_desc_ptr;
 
 struct cvmx_bootinfo *octeon_bootinfo;
--- a/arch/mips/include/asm/octeon/octeon.h
+++ b/arch/mips/include/asm/octeon/octeon.h
@@ -252,4 +252,6 @@ void octeon_irq_set_ip4_handler(octeon_i
 
 extern void octeon_fixup_irqs(void);
 
+extern struct semaphore octeon_bootbus_sem;
+
 #endif /* __ASM_OCTEON_OCTEON_H */
