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charset="utf-8" Split the 64-bit register accesses if 64-bit access is not supported by the PMU. Signed-off-by: Ilkka Koskinen --- drivers/perf/arm_cspmu/arm_cspmu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/perf/arm_cspmu/arm_cspmu.c b/drivers/perf/arm_cspmu/ar= m_cspmu.c index a3f1c410b417..f8b4a149eb88 100644 --- a/drivers/perf/arm_cspmu/arm_cspmu.c +++ b/drivers/perf/arm_cspmu/arm_cspmu.c @@ -702,7 +702,10 @@ static void arm_cspmu_write_counter(struct perf_event = *event, u64 val) if (use_64b_counter_reg(cspmu)) { offset =3D counter_offset(sizeof(u64), event->hw.idx); =20 - writeq(val, cspmu->base1 + offset); + if (supports_64bit_atomics(cspmu)) + writeq(val, cspmu->base1 + offset); + else + lo_hi_writeq(val, cspmu->base1 + offset); } else { offset =3D counter_offset(sizeof(u32), event->hw.idx); =20 --=20 2.40.1