netdev - [RFC v2 2/9] thermal: Eliminate an always-false condition

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200414180105.20042-3-andrzej.p@collabora.com>
Date:   Tue, 14 Apr 2020 20:00:58 +0200
From:   Andrzej Pietrasiewicz <andrzej.p@...labora.com>
To:     linux-pm@...r.kernel.org
Cc:     Zhang Rui <rui.zhang@...el.com>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>, Jiri Pirko <jiri@...lanox.com>,
        Ido Schimmel <idosch@...lanox.com>,
        "David S . Miller" <davem@...emloft.net>,
        Peter Kaestle <peter@...e.net>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        Support Opensource <support.opensource@...semi.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amit.kucheria@...durent.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Allison Randal <allison@...utok.net>,
        Enrico Weigelt <info@...ux.net>,
        Gayatri Kammela <gayatri.kammela@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-acpi@...r.kernel.org, netdev@...r.kernel.org,
        platform-driver-x86@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kernel@...labora.com,
        Andrzej Pietrasiewicz <andrzej.p@...labora.com>
Subject: [RFC v2 2/9] thermal: Eliminate an always-false condition

This driver provides a non-NULL "devdata" argument for
thermal_zone_device_register(). Thermal core never sets it to NULL
afterwards, so checking for its being NULL in this driver makes no sense.

Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@...labora.com>
---
 drivers/acpi/thermal.c                                  | 6 ------
 drivers/thermal/intel/int340x_thermal/int3400_thermal.c | 6 ------
 2 files changed, 12 deletions(-)

diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 19067a5e5293..328b479ce7f6 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -531,9 +531,6 @@ static int thermal_get_mode(struct thermal_zone_device *thermal,
 {
 	struct acpi_thermal *tz = thermal->devdata;
 
-	if (!tz)
-		return -EINVAL;
-
 	*mode = tz->tz_enabled ? THERMAL_DEVICE_ENABLED :
 		THERMAL_DEVICE_DISABLED;
 
@@ -546,9 +543,6 @@ static int thermal_set_mode(struct thermal_zone_device *thermal,
 	struct acpi_thermal *tz = thermal->devdata;
 	int enable;
 
-	if (!tz)
-		return -EINVAL;
-
 	/*
 	 * enable/disable thermal management from ACPI thermal driver
 	 */
diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
index e802922a13cf..fbb59dd09481 100644
--- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
+++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
@@ -235,9 +235,6 @@ static int int3400_thermal_get_mode(struct thermal_zone_device *thermal,
 {
 	struct int3400_thermal_priv *priv = thermal->devdata;
 
-	if (!priv)
-		return -EINVAL;
-
 	*mode = priv->mode;
 
 	return 0;
@@ -250,9 +247,6 @@ static int int3400_thermal_set_mode(struct thermal_zone_device *thermal,
 	bool enable;
 	int result = 0;
 
-	if (!priv)
-		return -EINVAL;
-
 	if (mode == THERMAL_DEVICE_ENABLED)
 		enable = true;
 	else if (mode == THERMAL_DEVICE_DISABLED)
-- 
2.17.1