ACPI: CPPC: Modify cppc_get_auto_sel_caps() to cppc_get_auto_sel()

Modify cppc_get_auto_sel_caps() to cppc_get_auto_sel(). Using a
cppc_perf_caps to carry the value is unnecessary.

Add a check to ensure the pointer 'enable' is not null.

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]>

1 files changed, 11 insertions, 7 deletions

diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c
index 62c4673c3ef8..6163831b8c19 100644
--- a/drivers/acpi/cppc_acpi.c
+++ b/drivers/acpi/cppc_acpi.c
@@ -1602,23 +1602,27 @@ int cppc_set_epp_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls, bool enable)
 EXPORT_SYMBOL_GPL(cppc_set_epp_perf);
 
 /**
- * cppc_get_auto_sel_caps - Read autonomous selection register.
- * @cpunum : CPU from which to read register.
- * @perf_caps : struct where autonomous selection register value is updated.
+ * cppc_get_auto_sel() - Read autonomous selection register.
+ * @cpu: CPU from which to read register.
+ * @enable: Return address.
  */
-int cppc_get_auto_sel_caps(int cpunum, struct cppc_perf_caps *perf_caps)
+int cppc_get_auto_sel(int cpu, bool *enable)
 {
 	u64 auto_sel;
 	int ret;
 
-	ret = cppc_get_reg_val(cpunum, AUTO_SEL_ENABLE, &auto_sel);
+	if (enable == NULL)
+		return -EINVAL;
+
+	ret = cppc_get_reg_val(cpu, AUTO_SEL_ENABLE, &auto_sel);
 	if (ret)
 		return ret;
 
-	perf_caps->auto_sel = (bool)auto_sel;
+	*enable = (bool)auto_sel;
+
 	return 0;
 }
-EXPORT_SYMBOL_GPL(cppc_get_auto_sel_caps);
+EXPORT_SYMBOL_GPL(cppc_get_auto_sel);
 
 /**
  * cppc_set_auto_sel - Write autonomous selection register.