linux-kernel - [PATCH v1 12/13] ACPI: thermal: Drop critical_valid and hot

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Date:   Thu, 21 Sep 2023 20:04:49 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux PM <linux-pm@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Linux ACPI <linux-acpi@...r.kernel.org>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Zhang Rui <rui.zhang@...el.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Lukasz Luba <lukasz.luba@....com>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: [PATCH v1 12/13] ACPI: thermal: Drop critical_valid and hot_valid trip flags

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

The critical_valid and hot_valid flags in struct acpi_thermal_trips are
only used during initialization and they are only false if the
corresponding trip temperatures are equal to THERMAL_TEMP_INVALID, so
drop them and use THERMAL_TEMP_INVALID checks instead of them where
applicable.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/acpi/thermal.c |   25 ++++++++-----------------
 1 file changed, 8 insertions(+), 17 deletions(-)

Index: linux-pm/drivers/acpi/thermal.c
===================================================================
--- linux-pm.orig/drivers/acpi/thermal.c
+++ linux-pm/drivers/acpi/thermal.c
@@ -100,8 +100,6 @@ struct acpi_thermal_active {
 struct acpi_thermal_trips {
 	struct acpi_thermal_passive passive;
 	struct acpi_thermal_active active[ACPI_THERMAL_MAX_ACTIVE];
-	bool critical_valid;
-	bool hot_valid;
 };
 
 struct acpi_thermal {
@@ -355,13 +353,13 @@ static long acpi_thermal_get_critical_tr
 	}
 	if (crt == -1) {
 		acpi_handle_debug(tz->device->handle, "Critical threshold disabled\n");
-		goto fail;
+		return THERMAL_TEMP_INVALID;
 	}
 
 	status = acpi_evaluate_integer(tz->device->handle, "_CRT", NULL, &tmp);
 	if (ACPI_FAILURE(status)) {
 		acpi_handle_debug(tz->device->handle, "No critical threshold\n");
-		goto fail;
+		return THERMAL_TEMP_INVALID;
 	}
 	if (tmp <= 2732) {
 		/*
@@ -369,17 +367,12 @@ static long acpi_thermal_get_critical_tr
 		 * so discard them as invalid.
 		 */
 		pr_info(FW_BUG "Invalid critical threshold (%llu)\n", tmp);
-		goto fail;
+		return THERMAL_TEMP_INVALID;
 	}
 
 set:
-	tz->trips.critical_valid = true;
 	acpi_handle_debug(tz->device->handle, "Critical threshold [%llu]\n", tmp);
 	return tmp;
-
-fail:
-	tz->trips.critical_valid = false;
-	return THERMAL_TEMP_INVALID;
 }
 
 static long acpi_thermal_get_hot_trip(struct acpi_thermal *tz)
@@ -389,12 +382,10 @@ static long acpi_thermal_get_hot_trip(st
 
 	status = acpi_evaluate_integer(tz->device->handle, "_HOT", NULL, &tmp);
 	if (ACPI_FAILURE(status)) {
-		tz->trips.hot_valid = false;
 		acpi_handle_debug(tz->device->handle, "No hot threshold\n");
 		return THERMAL_TEMP_INVALID;
 	}
 
-	tz->trips.hot_valid = true;
 	acpi_handle_debug(tz->device->handle, "Hot threshold [%llu]\n", tmp);
 	return tmp;
 }
@@ -789,7 +780,7 @@ static void acpi_thermal_aml_dependency_
  */
 static void acpi_thermal_guess_offset(struct acpi_thermal *tz, long crit_temp)
 {
-	if (tz->trips.critical_valid && crit_temp % 5 == 1)
+	if (crit_temp != THERMAL_TEMP_INVALID && crit_temp % 5 == 1)
 		tz->kelvin_offset = 273100;
 	else
 		tz->kelvin_offset = 273200;
@@ -850,11 +841,11 @@ static int acpi_thermal_add(struct acpi_
 	trip_count = acpi_thermal_get_trip_points(tz);
 
 	crit_temp = acpi_thermal_get_critical_trip(tz);
-	if (tz->trips.critical_valid)
+	if (crit_temp != THERMAL_TEMP_INVALID)
 		trip_count++;
 
 	hot_temp = acpi_thermal_get_hot_trip(tz);
-	if (tz->trips.hot_valid)
+	if (hot_temp != THERMAL_TEMP_INVALID)
 		trip_count++;
 
 	if (!trip_count) {
@@ -886,13 +877,13 @@ static int acpi_thermal_add(struct acpi_
 
 	tz->trip_table = trip;
 
-	if (tz->trips.critical_valid) {
+	if (crit_temp != THERMAL_TEMP_INVALID) {
 		trip->type = THERMAL_TRIP_CRITICAL;
 		trip->temperature = acpi_thermal_temp(tz, crit_temp);
 		trip++;
 	}
 
-	if (tz->trips.hot_valid) {
+	if (hot_temp != THERMAL_TEMP_INVALID) {
 		trip->type = THERMAL_TRIP_HOT;
 		trip->temperature = acpi_thermal_temp(tz, hot_temp);
 		trip++;