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authorSascha Hauer <s.hauer@pengutronix.de>2015-07-24 09:12:54 +0300
committerZhang Rui <rui.zhang@intel.com>2015-08-03 18:15:50 +0300
commit17e8351a77397e8a83727eb17e3a3e9b8ab5257a (patch)
tree9087ea501d32baa56842d112c071cbe57eede870 /drivers/thermal/of-thermal.c
parent25a0a5ce16ecd7e60c4cf1436892433873e9d99d (diff)
downloadlinux-17e8351a77397e8a83727eb17e3a3e9b8ab5257a.tar.xz
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/thermal/of-thermal.c')
-rw-r--r--drivers/thermal/of-thermal.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index b295b2b6c191..42b7d4253b94 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -91,7 +91,7 @@ struct __thermal_zone {
/*** DT thermal zone device callbacks ***/
static int of_thermal_get_temp(struct thermal_zone_device *tz,
- unsigned long *temp)
+ int *temp)
{
struct __thermal_zone *data = tz->devdata;
@@ -177,7 +177,7 @@ EXPORT_SYMBOL_GPL(of_thermal_get_trip_points);
* Return: zero on success, error code otherwise
*/
static int of_thermal_set_emul_temp(struct thermal_zone_device *tz,
- unsigned long temp)
+ int temp)
{
struct __thermal_zone *data = tz->devdata;
@@ -311,7 +311,7 @@ static int of_thermal_get_trip_type(struct thermal_zone_device *tz, int trip,
}
static int of_thermal_get_trip_temp(struct thermal_zone_device *tz, int trip,
- unsigned long *temp)
+ int *temp)
{
struct __thermal_zone *data = tz->devdata;
@@ -324,7 +324,7 @@ static int of_thermal_get_trip_temp(struct thermal_zone_device *tz, int trip,
}
static int of_thermal_set_trip_temp(struct thermal_zone_device *tz, int trip,
- unsigned long temp)
+ int temp)
{
struct __thermal_zone *data = tz->devdata;
@@ -338,7 +338,7 @@ static int of_thermal_set_trip_temp(struct thermal_zone_device *tz, int trip,
}
static int of_thermal_get_trip_hyst(struct thermal_zone_device *tz, int trip,
- unsigned long *hyst)
+ int *hyst)
{
struct __thermal_zone *data = tz->devdata;
@@ -351,7 +351,7 @@ static int of_thermal_get_trip_hyst(struct thermal_zone_device *tz, int trip,
}
static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
- unsigned long hyst)
+ int hyst)
{
struct __thermal_zone *data = tz->devdata;
@@ -365,7 +365,7 @@ static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
}
static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
- unsigned long *temp)
+ int *temp)
{
struct __thermal_zone *data = tz->devdata;
int i;