Signed-off-by: Pali Rohár <pali.ro...@gmail.com>
---
drivers/power/bq27x00_battery.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index 5860d4d..41b3328 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);
}
--
1.7.10.4
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