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Thu, 15 May 2025 02:44:10 -0700 (PDT) From: Yunhui Cui To: sunilvl@ventanamicro.com, rafael@kernel.org, lenb@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, alex@ghiti.fr, linux-acpi@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Yunhui Cui Subject: [PATCH] ACPI: RISC-V: CPPC: Add CSR_CYCLE for CPPC FFH Date: Thu, 15 May 2025 17:43:01 +0800 Message-Id: <20250515094301.40016-1-cuiyunhui@bytedance.com> X-Mailer: git-send-email 2.39.2 (Apple Git-143) Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add the read of CSR_CYCLE to cppc_ffh_csr_read() to fix the warning message: "CPPC Cpufreq: cppc_scale_freq_wokrfn: failed to read perf counters". Signed-off-by: Yunhui Cui --- drivers/acpi/riscv/cppc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/riscv/cppc.c b/drivers/acpi/riscv/cppc.c index 4cdff387deff6..c1acaeb18eac3 100644 --- a/drivers/acpi/riscv/cppc.c +++ b/drivers/acpi/riscv/cppc.c @@ -69,11 +69,14 @@ static void cppc_ffh_csr_read(void *read_data) struct sbi_cppc_data *data = (struct sbi_cppc_data *)read_data; switch (data->reg) { - /* Support only TIME CSR for now */ case CSR_TIME: data->ret.value = csr_read(CSR_TIME); data->ret.error = 0; break; + case CSR_CYCLE: + data->ret.value = csr_read(CSR_CYCLE); + data->ret.error = 0; + break; default: data->ret.error = -EINVAL; break;