ACPI: CPPC: Rename cppc_get_perf() to cppc_get_reg_val()

Rename cppc_get_perf() to cppc_get_reg_val() as a generic function to
read CPPC registers.

Reviewed-by: Pierre Gondois <[email protected]>
Signed-off-by: Lifeng Zheng <[email protected]>
Reviewed-by: Mario Limonciello <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: Lifeng Zheng

drivers/acpi/cppc_acpi.c

@@ -1179,16 +1179,16 @@ static int cpc_write(int cpu, struct cpc_register_resource *reg_res, u64 val)
 	return ret_val;
 }
 
-static int cppc_get_perf(int cpunum, enum cppc_regs reg_idx, u64 *perf)
+static int cppc_get_reg_val(int cpu, enum cppc_regs reg_idx, u64 *val)
 {
-	struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpunum);
+	struct cpc_desc *cpc_desc = per_cpu(cpc_desc_ptr, cpu);
 	struct cpc_register_resource *reg;
 
-	if (perf == NULL)
+	if (val == NULL)
 		return -EINVAL;
 
 	if (!cpc_desc) {
-		pr_debug("No CPC descriptor for CPU:%d\n", cpunum);
+		pr_debug("No CPC descriptor for CPU:%d\n", cpu);
 		return -ENODEV;
 	}
 
@@ -1202,7 +1202,7 @@ static int cppc_get_perf(int cpunum, enum cppc_regs reg_idx, u64 *perf)
 	}
 
 	if (CPC_IN_PCC(reg)) {
-		int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpunum);
+		int pcc_ss_id = per_cpu(cpu_pcc_subspace_idx, cpu);
 		struct cppc_pcc_data *pcc_ss_data = NULL;
 		int ret;
 
@@ -1216,7 +1216,7 @@ static int cppc_get_perf(int cpunum, enum cppc_regs reg_idx, u64 *perf)
 		down_write(&pcc_ss_data->pcc_lock);
 
 		if (send_pcc_cmd(pcc_ss_id, CMD_READ) >= 0)
-			ret = cpc_read(cpunum, reg, perf);
+			ret = cpc_read(cpu, reg, val);
 		else
 			ret = -EIO;
 
@@ -1225,7 +1225,7 @@ static int cppc_get_perf(int cpunum, enum cppc_regs reg_idx, u64 *perf)
 		return ret;
 	}
 
-	return cpc_read(cpunum, reg, perf);
+	return cpc_read(cpu, reg, val);
 }
 
 /**
@@ -1237,7 +1237,7 @@ static int cppc_get_perf(int cpunum, enum cppc_regs reg_idx, u64 *perf)
  */
 int cppc_get_desired_perf(int cpunum, u64 *desired_perf)
 {
-	return cppc_get_perf(cpunum, DESIRED_PERF, desired_perf);
+	return cppc_get_reg_val(cpunum, DESIRED_PERF, desired_perf);
 }
 EXPORT_SYMBOL_GPL(cppc_get_desired_perf);
 
@@ -1250,7 +1250,7 @@ EXPORT_SYMBOL_GPL(cppc_get_desired_perf);
  */
 int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf)
 {
-	return cppc_get_perf(cpunum, NOMINAL_PERF, nominal_perf);
+	return cppc_get_reg_val(cpunum, NOMINAL_PERF, nominal_perf);
 }
 
 /**
@@ -1262,7 +1262,7 @@ int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf)
  */
 int cppc_get_highest_perf(int cpunum, u64 *highest_perf)
 {
-	return cppc_get_perf(cpunum, HIGHEST_PERF, highest_perf);
+	return cppc_get_reg_val(cpunum, HIGHEST_PERF, highest_perf);
 }
 EXPORT_SYMBOL_GPL(cppc_get_highest_perf);
 
@@ -1275,7 +1275,7 @@ EXPORT_SYMBOL_GPL(cppc_get_highest_perf);
  */
 int cppc_get_epp_perf(int cpunum, u64 *epp_perf)
 {
-	return cppc_get_perf(cpunum, ENERGY_PERF, epp_perf);
+	return cppc_get_reg_val(cpunum, ENERGY_PERF, epp_perf);
 }
 EXPORT_SYMBOL_GPL(cppc_get_epp_perf);