diff options
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/bq27x00_battery.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c index 5860d4dfbe9..41b3328ecfc 100644 --- a/drivers/power/bq27x00_battery.c +++ b/drivers/power/bq27x00_battery.c @@ -230,6 +230,14 @@ static int bq27x00_battery_read_charge(struct bq27x00_device_info *di, u8 reg) */ static inline int bq27x00_battery_read_nac(struct bq27x00_device_info *di) { + int flags; + bool is_bq27500 = di->chip == BQ27500; + bool is_higher = bq27xxx_is_chip_version_higher(di); + + flags = bq27x00_read(di, BQ27x00_REG_FLAGS, !is_bq27500); + if (flags >= 0 && !is_higher && (flags & BQ27000_FLAG_CI)) + return -ENODATA; + return bq27x00_battery_read_charge(di, BQ27x00_REG_NAC); } |