3 files changed, 13 insertions, 8 deletions

diff --git a/arch/arc/kernel/fpu.c b/arch/arc/kernel/fpu.c
index c67c0f0f5f77..ec640219d989 100644
--- a/arch/arc/kernel/fpu.c
+++ b/arch/arc/kernel/fpu.c
@@ -57,23 +57,26 @@ void fpu_save_restore(struct task_struct *prev, struct task_struct *next)
 
 void fpu_init_task(struct pt_regs *regs)
 {
+	const unsigned int fwe = 0x80000000;
+
 	/* default rounding mode */
 	write_aux_reg(ARC_REG_FPU_CTRL, 0x100);
 
-	/* set "Write enable" to allow explicit write to exception flags */
-	write_aux_reg(ARC_REG_FPU_STATUS, 0x80000000);
+	/* Initialize to zero: setting requires FWE be set */
+	write_aux_reg(ARC_REG_FPU_STATUS, fwe);
 }
 
 void fpu_save_restore(struct task_struct *prev, struct task_struct *next)
 {
 	struct arc_fpu *save = &prev->thread.fpu;
 	struct arc_fpu *restore = &next->thread.fpu;
+	const unsigned int fwe = 0x80000000;
 
 	save->ctrl = read_aux_reg(ARC_REG_FPU_CTRL);
 	save->status = read_aux_reg(ARC_REG_FPU_STATUS);
 
 	write_aux_reg(ARC_REG_FPU_CTRL, restore->ctrl);
-	write_aux_reg(ARC_REG_FPU_STATUS, restore->status);
+	write_aux_reg(ARC_REG_FPU_STATUS, (fwe | restore->status));
 }
 
 #endif
diff --git a/arch/arc/kernel/unwind.c b/arch/arc/kernel/unwind.c
index 47bab67f8649..9e28058cdba8 100644
--- a/arch/arc/kernel/unwind.c
+++ b/arch/arc/kernel/unwind.c
@@ -260,7 +260,7 @@ static void init_unwind_hdr(struct unwind_table *table,
 {
 	const u8 *ptr;
 	unsigned long tableSize = table->size, hdrSize;
-	unsigned n;
+	unsigned int n;
 	const u32 *fde;
 	struct {
 		u8 version;
@@ -462,7 +462,7 @@ static uleb128_t get_uleb128(const u8 **pcur, const u8 *end)
 {
 	const u8 *cur = *pcur;
 	uleb128_t value;
-	unsigned shift;
+	unsigned int shift;
 
 	for (shift = 0, value = 0; cur < end; shift += 7) {
 		if (shift + 7 > 8 * sizeof(value)
@@ -483,7 +483,7 @@ static sleb128_t get_sleb128(const u8 **pcur, const u8 *end)
 {
 	const u8 *cur = *pcur;
 	sleb128_t value;
-	unsigned shift;
+	unsigned int shift;
 
 	for (shift = 0, value = 0; cur < end; shift += 7) {
 		if (shift + 7 > 8 * sizeof(value)
@@ -609,7 +609,7 @@ static unsigned long read_pointer(const u8 **pLoc, const void *end,
 static signed fde_pointer_type(const u32 *cie)
 {
 	const u8 *ptr = (const u8 *)(cie + 2);
-	unsigned version = *ptr;
+	unsigned int version = *ptr;
 
 	if (*++ptr) {
 		const char *aug;
@@ -904,7 +904,7 @@ int arc_unwind(struct unwind_frame_info *frame)
 	const u8 *ptr = NULL, *end = NULL;
 	unsigned long pc = UNW_PC(frame) - frame->call_frame;
 	unsigned long startLoc = 0, endLoc = 0, cfa;
-	unsigned i;
+	unsigned int i;
 	signed ptrType = -1;
 	uleb128_t retAddrReg = 0;
 	const struct unwind_table *table;
diff --git a/arch/arc/kernel/vmlinux.lds.S b/arch/arc/kernel/vmlinux.lds.S
index e2146a8da195..529ae50f9fe2 100644
--- a/arch/arc/kernel/vmlinux.lds.S
+++ b/arch/arc/kernel/vmlinux.lds.S
@@ -88,6 +88,8 @@ SECTIONS
 		CPUIDLE_TEXT
 		LOCK_TEXT
 		KPROBES_TEXT
+		IRQENTRY_TEXT
+		SOFTIRQENTRY_TEXT
 		*(.fixup)
 		*(.gnu.warning)
 	}