linux-kernel - [PATCH 5/6] power: supply: sc27xx: Make sure the alarm capacity is larger than 0

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Message-Id: <5c3bb516c6020410a932c12eb2481fd75c34b7fe.1564566425.git.baolin.wang@linaro.org>
Date:   Wed, 31 Jul 2019 18:00:27 +0800
From:   Baolin Wang <baolin.wang@...aro.org>
To:     sre@...nel.org
Cc:     orsonzhai@...il.com, zhang.lyra@...il.com, yuanjiang.yu@...soc.com,
        baolin.wang@...aro.org, vincent.guittot@...aro.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 5/6] power: supply: sc27xx: Make sure the alarm capacity is larger than 0

From: Yuanjiang Yu <yuanjiang.yu@...soc.com>

We must make sure the alarm capacity is larger than 0, to help to
calibrate the low battery capacity.

Signed-off-by: Yuanjiang Yu <yuanjiang.yu@...soc.com>
Signed-off-by: Baolin Wang <baolin.wang@...aro.org>
---
 drivers/power/supply/sc27xx_fuel_gauge.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c
index f670131..fa85f40 100644
--- a/drivers/power/supply/sc27xx_fuel_gauge.c
+++ b/drivers/power/supply/sc27xx_fuel_gauge.c
@@ -915,6 +915,8 @@ static int sc27xx_fgu_hw_init(struct sc27xx_fgu_data *data)
 	data->alarm_cap = power_supply_ocv2cap_simple(data->cap_table,
 						      data->table_len,
 						      data->min_volt);
+	if (!data->alarm_cap)
+		data->alarm_cap += 1;
 
 	power_supply_put_battery_info(data->battery, &info);
 
-- 
1.7.9.5