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Date: Thu, 1 Oct 2015 23:45:31 +0200
From: Rasmus Villemoes <linux@...musvillemoes.dk>
To: Zhang Rui <rui.zhang@...el.com>,
"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
Guenter Roeck <linux@...ck-us.net>, linux-pm@...r.kernel.org,
Rasmus Villemoes <linux@...musvillemoes.dk>
Subject: [PATCH] linux/thermal.h: rename KELVIN_TO_CELSIUS to DECI_KELVIN_TO_CELSIUS
The macros KELVIN_TO_CELSIUS and CELSIUS_TO_KELVIN actually convert
between deciKelvins and Celsius, so rename them to reflect that. While
at it, use a statement expression in DECI_KELVIN_TO_CELSIUS to prevent
expanding the argument multiple times and get rid of a few casts.
Signed-off-by: Rasmus Villemoes <linux@...musvillemoes.dk>
---
Cleaning out old branches, I stumbled on this which apparently fell
through the cracks
[http://thread.gmane.org/gmane.linux.drivers.platform.x86.devel/5349]. The
unit mismatch still bugs the physicist in me, so I'm resending.
drivers/acpi/thermal.c | 12 ++++++------
drivers/platform/x86/asus-wmi.c | 2 +-
drivers/platform/x86/intel_menlow.c | 8 ++++----
include/linux/thermal.h | 8 +++++---
4 files changed, 16 insertions(+), 14 deletions(-)
diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
index 30d8518b25fb..82707f9824ca 100644
--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -315,7 +315,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
if (crt == -1) {
tz->trips.critical.flags.valid = 0;
} else if (crt > 0) {
- unsigned long crt_k = CELSIUS_TO_KELVIN(crt);
+ unsigned long crt_k = CELSIUS_TO_DECI_KELVIN(crt);
/*
* Allow override critical threshold
*/
@@ -351,7 +351,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
if (psv == -1) {
status = AE_SUPPORT;
} else if (psv > 0) {
- tmp = CELSIUS_TO_KELVIN(psv);
+ tmp = CELSIUS_TO_DECI_KELVIN(psv);
status = AE_OK;
} else {
status = acpi_evaluate_integer(tz->device->handle,
@@ -431,7 +431,7 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
break;
if (i == 1)
tz->trips.active[0].temperature =
- CELSIUS_TO_KELVIN(act);
+ CELSIUS_TO_DECI_KELVIN(act);
else
/*
* Don't allow override higher than
@@ -439,9 +439,9 @@ static int acpi_thermal_trips_update(struct acpi_thermal *tz, int flag)
*/
tz->trips.active[i - 1].temperature =
(tz->trips.active[i - 2].temperature <
- CELSIUS_TO_KELVIN(act) ?
+ CELSIUS_TO_DECI_KELVIN(act) ?
tz->trips.active[i - 2].temperature :
- CELSIUS_TO_KELVIN(act));
+ CELSIUS_TO_DECI_KELVIN(act));
break;
} else {
tz->trips.active[i].temperature = tmp;
@@ -1105,7 +1105,7 @@ static int acpi_thermal_add(struct acpi_device *device)
INIT_WORK(&tz->thermal_check_work, acpi_thermal_check_fn);
pr_info(PREFIX "%s [%s] (%ld C)\n", acpi_device_name(device),
- acpi_device_bid(device), KELVIN_TO_CELSIUS(tz->temperature));
+ acpi_device_bid(device), DECI_KELVIN_TO_CELSIUS(tz->temperature));
goto end;
free_memory:
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index efbc3f0c592b..bb80f7a29496 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -1318,7 +1318,7 @@ static ssize_t asus_hwmon_temp1(struct device *dev,
if (err < 0)
return err;
- value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
+ value = DECI_KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
return sprintf(buf, "%d\n", value);
}
diff --git a/drivers/platform/x86/intel_menlow.c b/drivers/platform/x86/intel_menlow.c
index e8b46d2c468c..0a919d81662c 100644
--- a/drivers/platform/x86/intel_menlow.c
+++ b/drivers/platform/x86/intel_menlow.c
@@ -315,7 +315,7 @@ static ssize_t aux0_show(struct device *dev,
result = sensor_get_auxtrip(attr->handle, 0, &value);
- return result ? result : sprintf(buf, "%lu", KELVIN_TO_CELSIUS(value));
+ return result ? result : sprintf(buf, "%lu", DECI_KELVIN_TO_CELSIUS(value));
}
static ssize_t aux1_show(struct device *dev,
@@ -327,7 +327,7 @@ static ssize_t aux1_show(struct device *dev,
result = sensor_get_auxtrip(attr->handle, 1, &value);
- return result ? result : sprintf(buf, "%lu", KELVIN_TO_CELSIUS(value));
+ return result ? result : sprintf(buf, "%lu", DECI_KELVIN_TO_CELSIUS(value));
}
static ssize_t aux0_store(struct device *dev,
@@ -345,7 +345,7 @@ static ssize_t aux0_store(struct device *dev,
if (value < 0)
return -EINVAL;
- result = sensor_set_auxtrip(attr->handle, 0, CELSIUS_TO_KELVIN(value));
+ result = sensor_set_auxtrip(attr->handle, 0, CELSIUS_TO_DECI_KELVIN(value));
return result ? result : count;
}
@@ -364,7 +364,7 @@ static ssize_t aux1_store(struct device *dev,
if (value < 0)
return -EINVAL;
- result = sensor_set_auxtrip(attr->handle, 1, CELSIUS_TO_KELVIN(value));
+ result = sensor_set_auxtrip(attr->handle, 1, CELSIUS_TO_DECI_KELVIN(value));
return result ? result : count;
}
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 157d366e761b..4014a59828fc 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -44,9 +44,11 @@
#define THERMAL_WEIGHT_DEFAULT 0
/* Unit conversion macros */
-#define KELVIN_TO_CELSIUS(t) (long)(((long)t-2732 >= 0) ? \
- ((long)t-2732+5)/10 : ((long)t-2732-5)/10)
-#define CELSIUS_TO_KELVIN(t) ((t)*10+2732)
+#define DECI_KELVIN_TO_CELSIUS(t) ({ \
+ long _t = (t); \
+ ((_t-2732 >= 0) ? (_t-2732+5)/10 : (_t-2732-5)/10); \
+})
+#define CELSIUS_TO_DECI_KELVIN(t) ((t)*10+2732)
#define DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(t, off) (((t) - (off)) * 100)
#define DECI_KELVIN_TO_MILLICELSIUS(t) DECI_KELVIN_TO_MILLICELSIUS_WITH_OFFSET(t, 2732)
#define MILLICELSIUS_TO_DECI_KELVIN_WITH_OFFSET(t, off) (((t) / 100) + (off))
--
2.1.3
--
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