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author | Sascha Hauer <s.hauer@pengutronix.de> | 2015-07-24 08:12:54 +0200 |
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committer | Zhang Rui <rui.zhang@intel.com> | 2015-08-03 23:15:50 +0800 |
commit | 17e8351a77397e8a83727eb17e3a3e9b8ab5257a (patch) | |
tree | 9087ea501d32baa56842d112c071cbe57eede870 /drivers/power | |
parent | 25a0a5ce16ecd7e60c4cf1436892433873e9d99d (diff) | |
download | linux-17e8351a77397e8a83727eb17e3a3e9b8ab5257a.tar.gz linux-17e8351a77397e8a83727eb17e3a3e9b8ab5257a.tar.bz2 linux-17e8351a77397e8a83727eb17e3a3e9b8ab5257a.zip |
thermal: consistently use int for temperatures
The thermal code uses int, long and unsigned long for temperatures
in different places.
Using an unsigned type limits the thermal framework to positive
temperatures without need. Also several drivers currently will report
temperatures near UINT_MAX for temperatures below 0°C. This will probably
immediately shut the machine down due to overtemperature if started below
0°C.
'long' is 64bit on several architectures. This is not needed since INT_MAX °mC
is above the melting point of all known materials.
Consistently use a plain 'int' for temperatures throughout the thermal code and
the drivers. This only changes the places in the drivers where the temperature
is passed around as pointer, when drivers internally use another type this is
not changed.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Lukasz Majewski <l.majewski@samsung.com>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Peter Feuerer <peter@piie.net>
Cc: Punit Agrawal <punit.agrawal@arm.com>
Cc: Zhang Rui <rui.zhang@intel.com>
Cc: Eduardo Valentin <edubezval@gmail.com>
Cc: linux-pm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Jean Delvare <jdelvare@suse.de>
Cc: Peter Feuerer <peter@piie.net>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Lukasz Majewski <l.majewski@samsung.com>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: linux-acpi@vger.kernel.org
Cc: platform-driver-x86@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-omap@vger.kernel.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Darren Hart <dvhart@infradead.org>
Cc: lm-sensors@lm-sensors.org
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Diffstat (limited to 'drivers/power')
-rw-r--r-- | drivers/power/charger-manager.c | 2 | ||||
-rw-r--r-- | drivers/power/power_supply_core.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/power/charger-manager.c b/drivers/power/charger-manager.c index 1c202ccbd2a6..907293e6f2a4 100644 --- a/drivers/power/charger-manager.c +++ b/drivers/power/charger-manager.c @@ -619,7 +619,7 @@ static int cm_get_battery_temperature(struct charger_manager *cm, #ifdef CONFIG_THERMAL if (cm->tzd_batt) { - ret = thermal_zone_get_temp(cm->tzd_batt, (unsigned long *)temp); + ret = thermal_zone_get_temp(cm->tzd_batt, temp); if (!ret) /* Calibrate temperature unit */ *temp /= 100; diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c index 869284c2e1e8..456987c88baa 100644 --- a/drivers/power/power_supply_core.c +++ b/drivers/power/power_supply_core.c @@ -557,7 +557,7 @@ EXPORT_SYMBOL_GPL(power_supply_unreg_notifier); #ifdef CONFIG_THERMAL static int power_supply_read_temp(struct thermal_zone_device *tzd, - unsigned long *temp) + int *temp) { struct power_supply *psy; union power_supply_propval val; |