diff --git a/arch/arm/include/asm/cputype.h b/arch/arm/include/asm/cputype.h
index 819777d0e91f..85e374f873ac 100644
--- a/arch/arm/include/asm/cputype.h
+++ b/arch/arm/include/asm/cputype.h
@@ -253,4 +253,20 @@ static inline int cpu_is_pj4(void)
 #else
 #define cpu_is_pj4()	0
 #endif
+
+static inline int __attribute_const__ cpuid_feature_extract_field(u32 features,
+								  int field)
+{
+	int feature = (features >> field) & 15;
+
+	/* feature registers are signed values */
+	if (feature > 8)
+		feature -= 16;
+
+	return feature;
+}
+
+#define cpuid_feature_extract(reg, field) \
+	cpuid_feature_extract_field(read_cpuid_ext(reg), field)
+
 #endif
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index e55408e96559..637c449e6060 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -375,30 +375,26 @@ void __init early_print(const char *str, ...)
 
 static void __init cpuid_init_hwcaps(void)
 {
-	unsigned int divide_instrs, vmsa;
+	int block;
 
 	if (cpu_architecture() < CPU_ARCH_ARMv7)
 		return;
 
-	divide_instrs = (read_cpuid_ext(CPUID_EXT_ISAR0) & 0x0f000000) >> 24;
-
-	switch (divide_instrs) {
-	case 2:
+	block = cpuid_feature_extract(CPUID_EXT_ISAR0, 24);
+	if (block >= 2)
 		elf_hwcap |= HWCAP_IDIVA;
-	case 1:
+	if (block >= 1)
 		elf_hwcap |= HWCAP_IDIVT;
-	}
 
 	/* LPAE implies atomic ldrd/strd instructions */
-	vmsa = (read_cpuid_ext(CPUID_EXT_MMFR0) & 0xf) >> 0;
-	if (vmsa >= 5)
+	block = cpuid_feature_extract(CPUID_EXT_MMFR0, 0);
+	if (block >= 5)
 		elf_hwcap |= HWCAP_LPAE;
 }
 
 static void __init elf_hwcap_fixup(void)
 {
 	unsigned id = read_cpuid_id();
-	unsigned sync_prim;
 
 	/*
 	 * HWCAP_TLS is available only on 1136 r1p0 and later,
@@ -419,9 +415,9 @@ static void __init elf_hwcap_fixup(void)
 	 * avoid advertising SWP; it may not be atomic with
 	 * multiprocessing cores.
 	 */
-	sync_prim = ((read_cpuid_ext(CPUID_EXT_ISAR3) >> 8) & 0xf0) |
-		    ((read_cpuid_ext(CPUID_EXT_ISAR4) >> 20) & 0x0f);
-	if (sync_prim >= 0x13)
+	if (cpuid_feature_extract(CPUID_EXT_ISAR3, 12) > 1 ||
+	    (cpuid_feature_extract(CPUID_EXT_ISAR3, 12) == 1 &&
+	     cpuid_feature_extract(CPUID_EXT_ISAR3, 20) >= 3))
 		elf_hwcap &= ~HWCAP_SWP;
 }