Merge branch 'topic/ioctl-use-define' into for-linus

[sfrench/cifs-2.6.git] / drivers / power / ds2760_battery.c

diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 1d768928e0bbaf0c9fe61923bcaa0f10b139062c..a52d4a11652d57aa7b045fa225777fdaecb252f2 100644 (file)
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -180,10 +180,13 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di)
        di->empty_uAh = battery_interpolate(scale, di->temp_C / 10);
        di->empty_uAh *= 1000; /* convert to µAh */
 
-       /* From Maxim Application Note 131: remaining capacity =
-        * ((ICA - Empty Value) / (Full Value - Empty Value)) x 100% */
-       di->rem_capacity = ((di->accum_current_uAh - di->empty_uAh) * 100L) /
-                           (di->full_active_uAh - di->empty_uAh);
+       if (di->full_active_uAh == di->empty_uAh)
+               di->rem_capacity = 0;
+       else
+               /* From Maxim Application Note 131: remaining capacity =
+                * ((ICA - Empty Value) / (Full Value - Empty Value)) x 100% */
+               di->rem_capacity = ((di->accum_current_uAh - di->empty_uAh) * 100L) /
+                                   (di->full_active_uAh - di->empty_uAh);
 
        if (di->rem_capacity < 0)
                di->rem_capacity = 0;