linux-kernel - [PATCH] power: supply: sbs-battery: Fix a signedness bug in sbs_get_battery

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Message-ID: <20190925110128.GM3264@mwanda>
Date:   Wed, 25 Sep 2019 14:01:28 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Sebastian Reichel <sre@...nel.org>,
        Rhyland Klein <rklein@...dia.com>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] power: supply: sbs-battery: Fix a signedness bug in
 sbs_get_battery_capacity()

The "mode" variable is an enum and in this context GCC treats it as an
unsigned int so the error handling is never triggered.

Fixes: 51d075660457 ("bq20z75: Add support for charge properties")
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
 drivers/power/supply/sbs-battery.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/power/supply/sbs-battery.c b/drivers/power/supply/sbs-battery.c
index f8d74e9f7931..62110af1abcf 100644
--- a/drivers/power/supply/sbs-battery.c
+++ b/drivers/power/supply/sbs-battery.c
@@ -555,7 +555,7 @@ static int sbs_get_battery_capacity(struct i2c_client *client,
 		mode = BATTERY_MODE_AMPS;
 
 	mode = sbs_set_battery_mode(client, mode);
-	if (mode < 0)
+	if ((int)mode < 0)
 		return mode;
 
 	ret = sbs_read_word_data(client, sbs_data[reg_offset].addr);
-- 
2.20.1