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

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Message-ID: <20191020211443.mdvope3llryhdlrs@earth.universe>
Date:   Sun, 20 Oct 2019 23:14:43 +0200
From:   Sebastian Reichel <sre@...nel.org>
To:     Dan Carpenter <dan.carpenter@...cle.com>
Cc:     Rhyland Klein <rklein@...dia.com>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] power: supply: sbs-battery: Fix a signedness bug in
 sbs_get_battery_capacity()

Hi,

On Wed, Sep 25, 2019 at 02:01:28PM +0300, Dan Carpenter wrote:
> 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>
> ---

Thanks, queued.

-- Sebastian

>  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
> 

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