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[PATCH] hwmon: Fix negative temperature readings in lm77 driver

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Fix negative temperature readings in lm77 driver.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Michael Renzmann <mrenzmann@otaku42.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare
2006-01-09 22:43:08 +01:00
committed by Greg Kroah-Hartman
parent 21bbd69182
commit 413b645150
1 changed files with 4 additions and 4 deletions
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8
drivers/hwmon/lm77.c
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@@ -87,15 +87,15 @@ static struct i2c_driver lm77_driver = {
/* In the temperature registers, the low 3 bits are not part of the /* In the temperature registers, the low 3 bits are not part of the
temperature values; they are the status bits. */ temperature values; they are the status bits. */
static inline u16 LM77_TEMP_TO_REG(int temp) static inline s16 LM77_TEMP_TO_REG(int temp)
{ {
int ntemp = SENSORS_LIMIT(temp, LM77_TEMP_MIN, LM77_TEMP_MAX); int ntemp = SENSORS_LIMIT(temp, LM77_TEMP_MIN, LM77_TEMP_MAX);
return (u16)((ntemp / 500) * 8); return (ntemp / 500) * 8;
} }
static inline int LM77_TEMP_FROM_REG(u16 reg) static inline int LM77_TEMP_FROM_REG(s16 reg)
{ {
return ((int)reg / 8) * 500; return (reg / 8) * 500;
} }
/* sysfs stuff */ /* sysfs stuff */