#ifdef CONFIG_PPC_FSL_BOOK3E
 extern unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx,
                                     bool dryrun, bool init);
-extern unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
-                                phys_addr_t phys);
 #ifdef CONFIG_PPC32
 extern void adjust_total_lowmem(void);
 extern int switch_to_as1(void);
 
        tlbcam_addrs[index].phys = phys;
 }
 
-unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
-                         phys_addr_t phys)
+static unsigned long calc_cam_sz(unsigned long ram, unsigned long virt,
+                                phys_addr_t phys)
 {
        unsigned int camsize = __ilog2(ram);
        unsigned int align = __ffs(virt | phys);