1 files changed, 4 insertions, 3 deletions

diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 98c749394c4b..5f64d19a3411 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -966,13 +966,14 @@ static void __armv8pmu_probe_pmu(void *info)
 {
         struct armv8pmu_probe_info *probe = info;
         struct arm_pmu *cpu_pmu = probe->pmu;
-        u64 dfr0, pmuver;
+        u64 dfr0;
         u32 pmceid[2];
+        int pmuver;
 
         dfr0 = read_sysreg(id_aa64dfr0_el1);
-        pmuver = cpuid_feature_extract_unsigned_field(dfr0,
+        pmuver = cpuid_feature_extract_signed_field(dfr0,
                         ID_AA64DFR0_PMUVER_SHIFT);
-        if (pmuver != 1)
+        if (pmuver < 1)
                 return;
 
         probe->present = true;