From: Hans de Goede <hdegoede@xxxxxxxxxx>
commit 81af7f2342d162e24ac820c10e68684d9f927663 upstream.
Round constant_charge_voltage writes down to the first supported lower
value, rather then rounding them up to the first supported higher value.
This fixes e.g. writing 4250000 resulting in a value of 4350000 which
might be dangerous, instead writing 4250000 will now result in a safe
4200000 value.
Fixes: 843735b788a4 ("power: axp288_charger: axp288 charger driver")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240717200333.56669-2-hdegoede@xxxxxxxxxx
Signed-off-by: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/power/supply/axp288_charger.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
--- a/drivers/power/supply/axp288_charger.c
+++ b/drivers/power/supply/axp288_charger.c
@@ -175,18 +175,18 @@ static inline int axp288_charger_set_cv(
u8 reg_val;
int ret;
- if (cv <= CV_4100MV) {
- reg_val = CHRG_CCCV_CV_4100MV;
- cv = CV_4100MV;
- } else if (cv <= CV_4150MV) {
- reg_val = CHRG_CCCV_CV_4150MV;
- cv = CV_4150MV;
- } else if (cv <= CV_4200MV) {
+ if (cv >= CV_4350MV) {
+ reg_val = CHRG_CCCV_CV_4350MV;
+ cv = CV_4350MV;
+ } else if (cv >= CV_4200MV) {
reg_val = CHRG_CCCV_CV_4200MV;
cv = CV_4200MV;
+ } else if (cv >= CV_4150MV) {
+ reg_val = CHRG_CCCV_CV_4150MV;
+ cv = CV_4150MV;
} else {
- reg_val = CHRG_CCCV_CV_4350MV;
- cv = CV_4350MV;
+ reg_val = CHRG_CCCV_CV_4100MV;
+ cv = CV_4100MV;
}
reg_val = reg_val << CHRG_CCCV_CV_BIT_POS;
Patches currently in stable-queue which might be from hdegoede@xxxxxxxxxx are
queue-4.19/power-supply-axp288_charger-round-constant_charge_voltage-writes-down.patch
queue-4.19/power-supply-axp288_charger-fix-constant_charge_voltage-writes.patch
queue-4.19/leds-trigger-unregister-sysfs-attributes-before-call.patch
