hwmon/lm87: Fix a division by zero

Missing parentheses in the definition of FAN_FROM_REG cause a
division by zero for a specific register value.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Adrian Bunk <bunk@kernel.org>

diff --git a/drivers/hwmon/lm87.c b/drivers/hwmon/lm87.c
index 44f27a72eebde9c935ad38b34b520a05dd1e50b3..711bb60ad4bef86052c57bd38210eb2e5d332a86 100644 (file)
--- a/drivers/hwmon/lm87.c
+++ b/drivers/hwmon/lm87.c
@@ -128,7 +128,7 @@ static u8 LM87_REG_TEMP_LOW[3] = { 0x3A, 0x38, 0x2C };
                                 (((val) < 0 ? (val)-500 : (val)+500) / 1000))
 
 #define FAN_FROM_REG(reg,div)  ((reg) == 255 || (reg) == 0 ? 0 : \
-                                1350000 + (reg)*(div) / 2) / ((reg)*(div))
+                                (1350000 + (reg)*(div) / 2) / ((reg)*(div)))
 #define FAN_TO_REG(val,div)    ((val)*(div) * 255 <= 1350000 ? 255 : \
                                 (1350000 + (val)*(div) / 2) / ((val)*(div)))