This is a note to let you know that I've just added the patch titled power: supply: ip5xxx: Fix integer overflow in current_now calculation to the 6.0-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: power-supply-ip5xxx-fix-integer-overflow-in-current_.patch and it can be found in the queue-6.0 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 2b16a3b1c9108e9665ae8f6ff1440e499077fbf0 Author: Ondrej Jirman <megi@xxxxxx> Date: Sat Oct 29 00:40:52 2022 +0200 power: supply: ip5xxx: Fix integer overflow in current_now calculation [ 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> 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: