diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c
index 1b2a2bf97d7f..f1055e806c9f 100644
--- a/arch/x86/kernel/cpu/cacheinfo.c
+++ b/arch/x86/kernel/cpu/cacheinfo.c
@@ -593,28 +593,28 @@ static void amd_init_l3_cache(struct _cpuid4_info_regs *id4, int index)
 static int
 cpuid4_cache_lookup_regs(int index, struct _cpuid4_info_regs *id4)
 {
-	union _cpuid4_leaf_eax	eax;
-	union _cpuid4_leaf_ebx	ebx;
-	union _cpuid4_leaf_ecx	ecx;
-	unsigned		edx;
+	u8 cpu_vendor = boot_cpu_data.x86_vendor;
+	union _cpuid4_leaf_eax eax;
+	union _cpuid4_leaf_ebx ebx;
+	union _cpuid4_leaf_ecx ecx;
+	u32 edx;
 
-	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
-		if (boot_cpu_has(X86_FEATURE_TOPOEXT))
-			cpuid_count(0x8000001d, index, &eax.full,
-				    &ebx.full, &ecx.full, &edx);
-		else
+	if (cpu_vendor == X86_VENDOR_AMD || cpu_vendor == X86_VENDOR_HYGON) {
+		if (boot_cpu_has(X86_FEATURE_TOPOEXT) || cpu_vendor == X86_VENDOR_HYGON) {
+			/* AMD with TOPOEXT, or HYGON */
+			cpuid_count(0x8000001d, index, &eax.full, &ebx.full, &ecx.full, &edx);
+		} else {
+			/* Legacy AMD fallback */
 			amd_cpuid4(index, &eax, &ebx, &ecx);
-		amd_init_l3_cache(id4, index);
-	} else if (boot_cpu_data.x86_vendor == X86_VENDOR_HYGON) {
-		cpuid_count(0x8000001d, index, &eax.full,
-			    &ebx.full, &ecx.full, &edx);
+		}
 		amd_init_l3_cache(id4, index);
 	} else {
+		/* Intel */
 		cpuid_count(4, index, &eax.full, &ebx.full, &ecx.full, &edx);
 	}
 
 	if (eax.split.type == CTYPE_NULL)
-		return -EIO; /* better error ? */
+		return -EIO;
 
 	id4->eax = eax;
 	id4->ebx = ebx;