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Message-ID: <1898833.tdWV9SEqCh@rjwysocki.net>
Date: Fri, 05 Jul 2024 21:32:40 +0200
From: "Rafael J. Wysocki" <rjw@...ysocki.net>
To: Linux PM <linux-pm@...r.kernel.org>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>,
 LKML <linux-kernel@...r.kernel.org>, Lukasz Luba <lukasz.luba@....com>
Subject:
 [PATCH v1 1/2] thermal: core: Change passive_delay and polling_delay data
 type

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

It is better to use unsigned int as the data type for the passive_delay
and polling_delay arguments of thermal_zone_device_register_with_trips()
because they are implicitly cast to unsigned int anyway in
thermal_set_delay_jiffies() and if they happen to be negative at that
point, the resulting behavior may not be as desired.

Update the thermal_zone_device_register_with_trips() definition
accordingly.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---

This also allows the second patch to be simpler because it need not
worry about possible negative polling delay values.

---
 drivers/thermal/thermal_core.c |    3 ++-
 include/linux/thermal.h        |    3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

Index: linux-pm/drivers/thermal/thermal_core.c
===================================================================
--- linux-pm.orig/drivers/thermal/thermal_core.c
+++ linux-pm/drivers/thermal/thermal_core.c
@@ -1359,7 +1359,8 @@ thermal_zone_device_register_with_trips(
 					int num_trips, void *devdata,
 					const struct thermal_zone_device_ops *ops,
 					const struct thermal_zone_params *tzp,
-					int passive_delay, int polling_delay)
+					unsigned int passive_delay,
+					unsigned int polling_delay)
 {
 	const struct thermal_trip *trip = trips;
 	struct thermal_zone_device *tz;
Index: linux-pm/include/linux/thermal.h
===================================================================
--- linux-pm.orig/include/linux/thermal.h
+++ linux-pm/include/linux/thermal.h
@@ -221,7 +221,8 @@ struct thermal_zone_device *thermal_zone
 					int num_trips, void *devdata,
 					const struct thermal_zone_device_ops *ops,
 					const struct thermal_zone_params *tzp,
-					int passive_delay, int polling_delay);
+					unsigned int passive_delay,
+					unsigned int polling_delay);
 
 struct thermal_zone_device *thermal_tripless_zone_device_register(
 					const char *type,




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