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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-24 13:38:30 +1100 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-03-24 13:38:30 +1100 |
| commit | 9e41d9597e7825ec20d690013d32bcec5f3fe16a (patch) | |
| tree | ac6fea59e9a4a1c2183d6bbd6ffa760680673afb /drivers/power/ds2760_battery.c | |
| parent | 77ecfe8d427f554fabbf258e9d789f1d4c3afd63 (diff) | |
| parent | 8e0ee43bc2c3e19db56a4adaa9a9b04ce885cd84 (diff) | |
Merge commit 'origin/master' into next
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; |