From: Ondrej Jirman <megi@xxxxxx>
[ Upstream commit f9be5cb6c1f0191f8bcf4413b7e17e58e8dfaaa1 ]
When current is larger than ~2A, the multiplication in current_now
property overflows and the kernel reports invalid negative current
value. Change the numerator and denominator while preserving their
ratio to allow up to +-6A before the overflow.
Fixes: 75853406fa27 ("power: supply: Add a driver for Injoinic power bank ICs")
Signed-off-by: Ondrej Jirman <megi@xxxxxx>
Reviewed-by: Samuel Holland <samuel@xxxxxxxxxxxx>
[use 149197/200 instead of 261095/350 as suggested by Samuel]
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/power/supply/ip5xxx_power.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/power/supply/ip5xxx_power.c b/drivers/power/supply/ip5xxx_power.c
index 218e8e689a3f..00221e9c0bfc 100644
--- a/drivers/power/supply/ip5xxx_power.c
+++ b/drivers/power/supply/ip5xxx_power.c
@@ -352,7 +352,7 @@ static int ip5xxx_battery_get_property(struct power_supply *psy,
ret = ip5xxx_battery_read_adc(ip5xxx, IP5XXX_BATIADC_DAT0,
IP5XXX_BATIADC_DAT1, &raw);
- val->intval = DIV_ROUND_CLOSEST(raw * 745985, 1000);
+ val->intval = DIV_ROUND_CLOSEST(raw * 149197, 200);
return 0;
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
--
2.35.1
