--- a/arch/powerpc/kernel/align.c
+++ b/arch/powerpc/kernel/align.c
@@ -701,7 +701,7 @@ static int emulate_vsx(unsigned char __u
 
 int fix_alignment(struct pt_regs *regs)
 {
-	unsigned int instr, nb, flags, instruction = 0;
+	unsigned int instr, nb, flags, instruction __maybe_unused = 0;
 	unsigned int reg, areg;
 	unsigned int dsisr;
 	unsigned char __user *addr;
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -935,7 +935,7 @@ long sys_swapcontext(struct ucontext __u
 		     struct ucontext __user *new_ctx,
 		     int ctx_size, int r6, int r7, int r8, struct pt_regs *regs)
 {
-	unsigned char tmp;
+	unsigned char tmp __maybe_unused;
 	int ctx_has_vsx_region = 0;
 
 #ifdef CONFIG_PPC64
@@ -1076,7 +1076,7 @@ int sys_debug_setcontext(struct ucontext
 {
 	struct sig_dbg_op op;
 	int i;
-	unsigned char tmp;
+	unsigned char tmp __maybe_unused;
 	unsigned long new_msr = regs->msr;
 #ifdef CONFIG_PPC_ADV_DEBUG_REGS
 	unsigned long new_dbcr0 = current->thread.dbcr0;
--- a/arch/powerpc/mm/mem.c
+++ b/arch/powerpc/mm/mem.c
@@ -171,7 +171,7 @@ void __init do_init_bootmem(void)
 	unsigned long start, bootmap_pages;
 	unsigned long total_pages;
 	struct memblock_region *reg;
-	int boot_mapsize;
+	int boot_mapsize __maybe_unused;
 
 	max_low_pfn = max_pfn = memblock_end_of_DRAM() >> PAGE_SHIFT;
 	total_pages = (memblock_end_of_DRAM() - memstart_addr) >> PAGE_SHIFT;
--- a/arch/powerpc/sysdev/qe_lib/qe_ic.c
+++ b/arch/powerpc/sysdev/qe_lib/qe_ic.c
@@ -327,7 +327,7 @@ void __init qe_ic_init(struct device_nod
 {
 	struct qe_ic *qe_ic;
 	struct resource res;
-	u32 temp = 0, ret, high_active = 0;
+	u32 temp = 0, ret;
 
 	ret = of_address_to_resource(node, 0, &res);
 	if (ret)
@@ -376,7 +376,6 @@ void __init qe_ic_init(struct device_nod
 	/* choose destination signal for highest priority interrupt */
 	if (flags & QE_IC_HIGH_SIGNAL) {
 		temp |= (SIGNAL_HIGH << CICR_HPIT_SHIFT);
-		high_active = 1;
 	}
 
 	qe_ic_write(qe_ic->regs, QEIC_CICR, temp);