linux-kernel - [PATCH v3 1/2] acpi: thermal: initialize tz

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Date:   Mon,  3 Jul 2017 10:00:39 +0200
From:   Enric Balletbo i Serra <enric.balletbo@...labora.com>
To:     Zhang Rui <rui.zhang@...el.com>, rjw@...ysocki.net,
        Len Brown <lenb@...nel.org>, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Guenter Roeck <groeck@...omium.org>,
        Sameer Nanda <snanda@...omium.org>
Subject: [PATCH v3 1/2] acpi: thermal: initialize tz_enabled to 1

From: Sameer Nanda <snanda@...omium.org>

In the acpi_thermal_add path, acpi_thermal_get_info gets called before
acpi_thermal_register_thermal_zone.  Since tz_enabled was getting set to
1 only in acpi_thermal_register_thermal_zone, acpi_thermal_get_info
ended up disabling thermal polling.

Moved setting of tz_enabled to 1 into acpi_thermal_add itself.

Signed-off-by: Sameer Nanda <snanda@...omium.org>
Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
---
Changes since v2:
 - Zhang Rui: 
   - Make sure tz->tz_enabled is set properly before registering the zone.

Changes since v1:
 - This patch is new from v1 [1]

 [1] https://patchwork.kernel.org/patch/9804229/

 drivers/acpi/thermal.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 1d0417b..cd0fe92 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -930,8 +930,6 @@ static int acpi_thermal_register_thermal_zone(struct acpi_thermal *tz)
 	if (ACPI_FAILURE(status))
 		return -ENODEV;
 
-	tz->tz_enabled = 1;
-
 	dev_info(&tz->device->dev, "registered as thermal_zone%d\n",
 		 tz->thermal_zone->id);
 	return 0;
@@ -1088,6 +1086,7 @@ static int acpi_thermal_add(struct acpi_device *device)
 		return -ENOMEM;
 
 	tz->device = device;
+	tz->tz_enabled = 1;
 	strcpy(tz->name, device->pnp.bus_id);
 	strcpy(acpi_device_name(device), ACPI_THERMAL_DEVICE_NAME);
 	strcpy(acpi_device_class(device), ACPI_THERMAL_CLASS);
-- 
2.9.3