linux-kernel - [PATCH v2 10/12] thermal: core: Drop need_update field from struct thermal_zone

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Message-ID: <2495061.jE0xQCEvom@rjwysocki.net>
Date: Fri, 04 Oct 2024 21:35:16 +0200
From: "Rafael J. Wysocki" <rjw@...ysocki.net>
To: Linux PM <linux-pm@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
 Daniel Lezcano <daniel.lezcano@...aro.org>,
 Lukasz Luba <lukasz.luba@....com>, Zhang Rui <rui.zhang@...el.com>,
 Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Subject:
 [PATCH v2 10/12] thermal: core: Drop need_update field from struct
 thermal_zone_device

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

After previous changes, the need_update field in struct thermal_zone_device
is only set and never read, so drop it.

No functional impact.

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

This is a new iteration of

https://lore.kernel.org/linux-pm/3261209.5fSG56mABF@rjwysocki.net/

v1 -> v2: Rebase.

---
 drivers/thermal/thermal_core.c |    4 ----
 drivers/thermal/thermal_core.h |    2 --
 2 files changed, 6 deletions(-)

Index: linux-pm/drivers/thermal/thermal_core.c
===================================================================
--- linux-pm.orig/drivers/thermal/thermal_core.c
+++ linux-pm/drivers/thermal/thermal_core.c
@@ -840,7 +840,6 @@ static int thermal_bind_cdev_to_trip(str
 	if (!result) {
 		list_add_tail(&dev->tz_node, &tz->thermal_instances);
 		list_add_tail(&dev->cdev_node, &cdev->thermal_instances);
-		atomic_set(&tz->need_update, 1);
 
 		thermal_governor_update_tz(tz, THERMAL_TZ_BIND_CDEV);
 	}
@@ -1505,9 +1504,6 @@ thermal_zone_device_register_with_trips(
 	if (result)
 		goto remove_id;
 
-	/* A new thermal zone needs to be updated anyway. */
-	atomic_set(&tz->need_update, 1);
-
 	result = dev_set_name(&tz->device, "thermal_zone%d", tz->id);
 	if (result) {
 		thermal_zone_destroy_device_groups(tz);
Index: linux-pm/drivers/thermal/thermal_core.h
===================================================================
--- linux-pm.orig/drivers/thermal/thermal_core.h
+++ linux-pm/drivers/thermal/thermal_core.h
@@ -95,7 +95,6 @@ struct thermal_governor {
 			trip point.
  * @prev_high_trip:	the above current temperature if you've crossed a
 			passive trip point.
- * @need_update:	if equals 1, thermal_zone_device_update needs to be invoked.
  * @ops:	operations this &thermal_zone_device supports
  * @tzp:	thermal zone parameters
  * @governor:	pointer to the governor for this thermal zone
@@ -129,7 +128,6 @@ struct thermal_zone_device {
 	int passive;
 	int prev_low_trip;
 	int prev_high_trip;
-	atomic_t need_update;
 	struct thermal_zone_device_ops ops;
 	struct thermal_zone_params *tzp;
 	struct thermal_governor *governor;