[patch 23/33] ACPI: update thermal temperature

Greg KH
2008-08-04T20:29:27Z

[-- Attachment #1: acpi-update-thermal-temperature.patch --]
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2.6.25-stable review patch. If anyone has any objections, please let us
know.

------------------

From: Zhang, Rui <rui.zhang@intel.com>

commit 76ecb4f2d7ea5c3aac8970b9529775316507c6d2 upstream

Fix the problem that thermal_get_temp returns the cached value,
which causes the temperature in generic thermal never updates.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
drivers/acpi/thermal.c | 5 +++++
1 file changed, 5 insertions(+)

--- a/drivers/acpi/thermal.c
+++ b/drivers/acpi/thermal.c
@@ -891,10 +891,15 @@ static void acpi_thermal_check(void *dat
static int thermal_get_temp(struct thermal_zone_device *thermal, char *buf)
{
struct acpi_thermal *tz = thermal->devdata;
+ int result;

if (!tz)
return -EINVAL;

+ result = acpi_thermal_get_temperature(tz);
+ if (result)
+ return result;
+
return sprintf(buf, "%ld\n", KELVIN_TO_MILLICELSIUS(tz->temperature));
}

--