diff options
| author | Dan Williams <dan.j.williams@intel.com> | 2009-04-08 14:28:13 -0700 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2009-04-08 14:28:13 -0700 |
| commit | fd74ea65883c7e6903e9b652795f72b723a2be69 (patch) | |
| tree | 0792ad598080eae201d2836ac3c5a8fc46d0d03e /drivers/power/ds2760_battery.c | |
| parent | c8f517c444e4f9f55b5b5ca202b8404691a35805 (diff) | |
| parent | 8c6db1bbf80123839ec87bdd6cb364aea384623d (diff) | |
Merge branch 'dmaengine' into async-tx-raid6
Diffstat (limited to 'drivers/power/ds2760_battery.c')
| -rw-r--r-- | drivers/power/ds2760_battery.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c index 1d768928e0b..a52d4a11652 100644 --- 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; |