[PATCH v2 2/7] platform/x86: uniwill-laptop: Accept charging threshold of 0

[Armin Wolf <W_Armin@gmx.de>]

The power supply sysfs ABI states that:

	Not all hardware is capable of setting this to an arbitrary
	percentage. Drivers will round written values to the nearest
	supported value. Reading back the value will show the actual
	threshold set by the driver.

The driver currently violates this ABI by rejecting a charging
threshold of 0. Fix this by clamping this value to 1.

Fixes: d050479693bb ("platform/x86: Add Uniwill laptop driver")
Reviewed-by: Werner Sembach <wse@tuxedocomputers.com>
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
---
 drivers/platform/x86/uniwill/uniwill-acpi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/uniwill/uniwill-acpi.c b/drivers/platform/x86/uniwill/uniwill-acpi.c
index 8f16c94221aa..5551f193c2c1 100644
--- a/drivers/platform/x86/uniwill/uniwill-acpi.c
+++ b/drivers/platform/x86/uniwill/uniwill-acpi.c
@@ -1424,11 +1424,11 @@ static int uniwill_set_property(struct power_supply *psy, const struct power_sup
 
 	switch (psp) {
 	case POWER_SUPPLY_PROP_CHARGE_CONTROL_END_THRESHOLD:
-		if (val->intval < 1 || val->intval > 100)
+		if (val->intval < 0 || val->intval > 100)
 			return -EINVAL;
 
 		return regmap_update_bits(data->regmap, EC_ADDR_CHARGE_CTRL, CHARGE_CTRL_MASK,
-					  val->intval);
+					  max(val->intval, 1));
 	default:
 		return -EINVAL;
 	}
-- 
2.39.5