linux-kernel - [PATCH 2/3] thermal: int340x: Indicate userspace usage

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Date:   Sun, 29 Nov 2020 01:54:49 +0800
From:   Kai-Heng Feng <kai.heng.feng@...onical.com>
To:     rui.zhang@...el.com, daniel.lezcano@...aro.org, amitk@...nel.org
Cc:     Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Andrzej Pietrasiewicz <andrzej.p@...labora.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Peter Kaestle <peter@...e.net>,
        Matthew Garrett <mjg59@...gle.com>,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        Takashi Iwai <tiwai@...e.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Akinobu Mita <akinobu.mita@...il.com>,
        linux-pm@...r.kernel.org (open list:THERMAL),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 2/3] thermal: int340x: Indicate userspace usage

The device isn't present under ACPI ThermalZone, and there's a dedicated
userspace daemon for this thermal device.

Let thermal core know it shouldn't handle trips to avoid surprising
thermal shutdown.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
---
 drivers/thermal/intel/int340x_thermal/int3400_thermal.c     | 1 +
 .../thermal/intel/int340x_thermal/int340x_thermal_zone.c    | 6 +-----
 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
index 0966551cbaaa..2002bc96eb3c 100644
--- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
@@ -439,6 +439,7 @@ static struct thermal_zone_device_ops int3400_thermal_ops = {
 static struct thermal_zone_params int3400_thermal_params = {
 	.governor_name = "user_space",
 	.no_hwmon = true,
+	.userspace = true,
 };
 
 static void int3400_setup_gddv(struct int3400_thermal_priv *priv)
diff --git a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
index 6e479deff76b..a103eb42ef2d 100644
--- a/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
+++ b/drivers/thermal/intel/int340x_thermal/int340x_thermal_zone.c
@@ -208,6 +208,7 @@ EXPORT_SYMBOL_GPL(int340x_thermal_read_trips);
 static struct thermal_zone_params int340x_thermal_params = {
 	.governor_name = "user_space",
 	.no_hwmon = true,
+	.userspace = true,
 };
 
 struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
@@ -259,14 +260,9 @@ struct int34x_thermal_zone *int340x_thermal_zone_add(struct acpi_device *adev,
 		ret = PTR_ERR(int34x_thermal_zone->zone);
 		goto err_thermal_zone;
 	}
-	ret = thermal_zone_device_enable(int34x_thermal_zone->zone);
-	if (ret)
-		goto err_enable;
 
 	return int34x_thermal_zone;
 
-err_enable:
-	thermal_zone_device_unregister(int34x_thermal_zone->zone);
 err_thermal_zone:
 	acpi_lpat_free_conversion_table(int34x_thermal_zone->lpat_table);
 	kfree(int34x_thermal_zone->aux_trips);
-- 
2.29.2