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| author | Daniel Mack <daniel@caiaq.de> | 2009-07-15 18:20:41 +0200 |
|---|---|---|
| committer | Anton Vorontsov <cbouatmailru@gmail.com> | 2009-07-30 17:37:06 +0400 |
| commit | 25f2bfa62ae77820a8185734c4a2ab7f3971a2fc (patch) | |
| tree | 2809f7c45ed0e379cf11d3c2a6aa98d5d7996156 /drivers/power/ds2760_battery.c | |
| parent | c1e72193ea3fa02e96bf3aa66006e18d107d0266 (diff) | |
| download | linux-25f2bfa62ae77820a8185734c4a2ab7f3971a2fc.tar.gz linux-25f2bfa62ae77820a8185734c4a2ab7f3971a2fc.tar.bz2 linux-25f2bfa62ae77820a8185734c4a2ab7f3971a2fc.zip | |
ds2760_battery: handle full_active_uAh == 0 case correctly
In systems where the battery monitor is not part of the battery pack and
is hence not bootstrapped with sane values, the full_active_uAh is
likely to be zero.
Handle that case by defaulting to the rated_capacity information which
can be passed to the driver using the new module parameter.
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Szabolcs Gyurko <szabolcs.gyurko@tlt.hu>
Acked-by: Matt Reimer <mreimer@vpop.net>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'drivers/power/ds2760_battery.c')
| -rw-r--r-- | drivers/power/ds2760_battery.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c index ed0ea5e275c5..2d0e5edb4742 100644 --- a/drivers/power/ds2760_battery.c +++ b/drivers/power/ds2760_battery.c @@ -172,8 +172,13 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di) di->full_active_uAh = di->raw[DS2760_ACTIVE_FULL] << 8 | di->raw[DS2760_ACTIVE_FULL + 1]; - scale[0] = di->raw[DS2760_ACTIVE_FULL] << 8 | - di->raw[DS2760_ACTIVE_FULL + 1]; + /* If the full_active_uAh value is not given, fall back to the rated + * capacity. This is likely to happen when chips are not part of the + * battery pack and is therefore not bootstrapped. */ + if (di->full_active_uAh == 0) + di->full_active_uAh = di->rated_capacity / 1000L; + + scale[0] = di->full_active_uAh; for (i = 1; i < 5; i++) scale[i] = scale[i - 1] + di->raw[DS2760_ACTIVE_FULL + 2 + i]; |