linux-kernel - Re: [PATCH v2 1/2] extcon: axp288: Add missed error check

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Date:   Mon, 29 Jul 2019 10:25:14 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        linux-kernel@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>,
        Chen-Yu Tsai <wens@...e.org>
Cc:     Ramakrishna Pallala <ramakrishna.pallala@...el.com>
Subject: Re: [PATCH v2 1/2] extcon: axp288: Add missed error check

On 19. 7. 26. 오후 9:18, Andy Shevchenko wrote:
> It seems from the very beginning the error check has been missed
> in axp288_extcon_log_rsi(). Add it here.
> 
> Cc: Ramakrishna Pallala <ramakrishna.pallala@...el.com>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
> - added error message (Chanwoo)
>  drivers/extcon/extcon-axp288.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/extcon/extcon-axp288.c b/drivers/extcon/extcon-axp288.c
> index 7254852e6ec0..694a8d4a57ff 100644
> --- a/drivers/extcon/extcon-axp288.c
> +++ b/drivers/extcon/extcon-axp288.c
> @@ -135,6 +135,11 @@ static void axp288_extcon_log_rsi(struct axp288_extcon_info *info)
>  	int ret;
>  
>  	ret = regmap_read(info->regmap, AXP288_PS_BOOT_REASON_REG, &val);
> +	if (ret < 0) {
> +		dev_err(info->dev, "failed to read reset source indicator\n");
> +		return;
> +	}
> +
>  	for (i = 0, rsi = axp288_pwr_up_down_info; *rsi; rsi++, i++) {
>  		if (val & BIT(i)) {
>  			dev_dbg(info->dev, "%s\n", *rsi);
> 

Applied it. Thanks.

-- 
Best Regards,
Chanwoo Choi
Samsung Electronics