3.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lubomir Rintel <lkundrak@xxxxx>
commit ed54ffbe554f0902689fd6d1712bbacbacd11376 upstream.
According to [1] and [2], the temperature values are in tenths of degree
Celsius. Exposing the Celsius value makes the battery appear on fire:
$ upower -i /org/freedesktop/UPower/devices/battery_olpc_battery
...
temperature: 236.9 degrees C
Tested on OLPC XO-1 and OLPC XO-1.75 laptops.
[1] include/linux/power_supply.h
[2] Documentation/power/power_supply_class.txt
Fixes: fb972873a767 ("[BATTERY] One Laptop Per Child power/battery driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>
Acked-by: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/power/olpc_battery.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -425,14 +425,14 @@ static int olpc_bat_get_property(struct
if (ret)
return ret;
- val->intval = (s16)be16_to_cpu(ec_word) * 100 / 256;
+ val->intval = (s16)be16_to_cpu(ec_word) * 10 / 256;
break;
case POWER_SUPPLY_PROP_TEMP_AMBIENT:
ret = olpc_ec_cmd(EC_AMB_TEMP, NULL, 0, (void *)&ec_word, 2);
if (ret)
return ret;
- val->intval = (int)be16_to_cpu(ec_word) * 100 / 256;
+ val->intval = (int)be16_to_cpu(ec_word) * 10 / 256;
break;
case POWER_SUPPLY_PROP_CHARGE_COUNTER:
ret = olpc_ec_cmd(EC_BAT_ACR, NULL, 0, (void *)&ec_word, 2);
