linux-kernel - [PATCH v1] thermal: testing: Rearrange variable declarations involving _

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Message-ID: <5934556.DvuYhMxLoT@rafael.j.wysocki>
Date: Wed, 03 Sep 2025 16:52:45 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Linux PM <linux-pm@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Lukasz Luba <lukasz.luba@....com>,
 Daniel Lezcano <daniel.lezcano@...aro.org>,
 Krzysztof Kozlowski <krzk@...nel.org>
Subject:
 [PATCH v1] thermal: testing: Rearrange variable declarations involving
 __free()

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

Follow cleanup.h recommendations and always define and assign variables
in one statement when __free() is used.

No intentional functional impact.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/thermal/testing/zone.c |   31 +++++++++++--------------------
 1 file changed, 11 insertions(+), 20 deletions(-)

--- a/drivers/thermal/testing/zone.c
+++ b/drivers/thermal/testing/zone.c
@@ -184,15 +184,14 @@ static void tt_add_tz_work_fn(struct wor
 
 int tt_add_tz(void)
 {
-	struct tt_thermal_zone *tt_zone __free(kfree);
-	struct tt_work *tt_work __free(kfree) = NULL;
 	int ret;
 
-	tt_zone = kzalloc(sizeof(*tt_zone), GFP_KERNEL);
+	struct tt_thermal_zone *tt_zone __free(kfree) = kzalloc(sizeof(*tt_zone),
+								GFP_KERNEL);
 	if (!tt_zone)
 		return -ENOMEM;
 
-	tt_work = kzalloc(sizeof(*tt_work), GFP_KERNEL);
+	struct tt_work *tt_work __free(kfree) = kzalloc(sizeof(*tt_work), GFP_KERNEL);
 	if (!tt_work)
 		return -ENOMEM;
 
@@ -237,7 +236,6 @@ static void tt_zone_unregister_tz(struct
 
 int tt_del_tz(const char *arg)
 {
-	struct tt_work *tt_work __free(kfree) = NULL;
 	struct tt_thermal_zone *tt_zone, *aux;
 	int ret;
 	int id;
@@ -246,7 +244,7 @@ int tt_del_tz(const char *arg)
 	if (ret != 1)
 		return -EINVAL;
 
-	tt_work = kzalloc(sizeof(*tt_work), GFP_KERNEL);
+	struct tt_work *tt_work __free(kfree) = kzalloc(sizeof(*tt_work), GFP_KERNEL);
 	if (!tt_work)
 		return -ENOMEM;
 
@@ -330,20 +328,17 @@ static void tt_zone_add_trip_work_fn(str
 
 int tt_zone_add_trip(const char *arg)
 {
-	struct tt_thermal_zone *tt_zone __free(put_tt_zone) = NULL;
-	struct tt_trip *tt_trip __free(kfree) = NULL;
-	struct tt_work *tt_work __free(kfree);
 	int id;
 
-	tt_work = kzalloc(sizeof(*tt_work), GFP_KERNEL);
+	struct tt_work *tt_work __free(kfree) = kzalloc(sizeof(*tt_work), GFP_KERNEL);
 	if (!tt_work)
 		return -ENOMEM;
 
-	tt_trip = kzalloc(sizeof(*tt_trip), GFP_KERNEL);
+	struct tt_trip *tt_trip __free(kfree) = kzalloc(sizeof(*tt_trip), GFP_KERNEL);
 	if (!tt_trip)
 		return -ENOMEM;
 
-	tt_zone = tt_get_tt_zone(arg);
+	struct tt_thermal_zone *tt_zone __free(put_tt_zone) = tt_get_tt_zone(arg);
 	if (IS_ERR(tt_zone))
 		return PTR_ERR(tt_zone);
 
@@ -387,7 +382,6 @@ static const struct thermal_zone_device_
 
 static int tt_zone_register_tz(struct tt_thermal_zone *tt_zone)
 {
-	struct thermal_trip *trips __free(kfree) = NULL;
 	struct thermal_zone_device *tz;
 	struct tt_trip *tt_trip;
 	int i;
@@ -397,7 +391,8 @@ static int tt_zone_register_tz(struct tt
 	if (tt_zone->tz)
 		return -EINVAL;
 
-	trips = kcalloc(tt_zone->num_trips, sizeof(*trips), GFP_KERNEL);
+	struct thermal_trip *trips __free(kfree) = kcalloc(tt_zone->num_trips,
+							   sizeof(*trips), GFP_KERNEL);
 	if (!trips)
 		return -ENOMEM;
 
@@ -421,9 +416,7 @@ static int tt_zone_register_tz(struct tt
 
 int tt_zone_reg(const char *arg)
 {
-	struct tt_thermal_zone *tt_zone __free(put_tt_zone);
-
-	tt_zone = tt_get_tt_zone(arg);
+	struct tt_thermal_zone *tt_zone __free(put_tt_zone) = tt_get_tt_zone(arg);
 	if (IS_ERR(tt_zone))
 		return PTR_ERR(tt_zone);
 
@@ -432,9 +425,7 @@ int tt_zone_reg(const char *arg)
 
 int tt_zone_unreg(const char *arg)
 {
-	struct tt_thermal_zone *tt_zone __free(put_tt_zone);
-
-	tt_zone = tt_get_tt_zone(arg);
+	struct tt_thermal_zone *tt_zone __free(put_tt_zone) = tt_get_tt_zone(arg);
 	if (IS_ERR(tt_zone))
 		return PTR_ERR(tt_zone);