linux-kernel - Re: [PATCH 1/5] leds: lm3692x: Print error value on dev

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Wed, 18 Sep 2019 13:23:19 -0500
From:   Dan Murphy <dmurphy@...com>
To:     Guido Günther <agx@...xcpu.org>,
        Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Pavel Machek <pavel@....cz>, <linux-leds@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/5] leds: lm3692x: Print error value on dev_err

Guido

On 9/17/19 9:19 PM, Guido Günther wrote:
> This gives a way better idea what is going on.
>
> Signed-off-by: Guido Günther <agx@...xcpu.org>

Reviewed-by: Dan Murphy <dmurphy@...com>


> ---
>   drivers/leds/leds-lm3692x.c | 17 ++++++++++-------
>   1 file changed, 10 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/leds/leds-lm3692x.c b/drivers/leds/leds-lm3692x.c
> index 3d381f2f73d0..487228c2bed2 100644
> --- a/drivers/leds/leds-lm3692x.c
> +++ b/drivers/leds/leds-lm3692x.c
> @@ -174,19 +174,20 @@ static int lm3692x_brightness_set(struct led_classdev *led_cdev,
>   
>   	ret = lm3692x_fault_check(led);
>   	if (ret) {
> -		dev_err(&led->client->dev, "Cannot read/clear faults\n");
> +		dev_err(&led->client->dev, "Cannot read/clear faults: %d\n",
> +			ret);
>   		goto out;
>   	}
>   
>   	ret = regmap_write(led->regmap, LM3692X_BRT_MSB, brt_val);
>   	if (ret) {
> -		dev_err(&led->client->dev, "Cannot write MSB\n");
> +		dev_err(&led->client->dev, "Cannot write MSB: %d\n", ret);
>   		goto out;
>   	}
>   
>   	ret = regmap_write(led->regmap, LM3692X_BRT_LSB, led_brightness_lsb);
>   	if (ret) {
> -		dev_err(&led->client->dev, "Cannot write LSB\n");
> +		dev_err(&led->client->dev, "Cannot write LSB: %d\n", ret);
>   		goto out;
>   	}
>   out:
> @@ -203,7 +204,7 @@ static int lm3692x_init(struct lm3692x_led *led)
>   		ret = regulator_enable(led->regulator);
>   		if (ret) {
>   			dev_err(&led->client->dev,
> -				"Failed to enable regulator\n");
> +				"Failed to enable regulator: %d\n", ret);
>   			return ret;
>   		}
>   	}
> @@ -213,7 +214,8 @@ static int lm3692x_init(struct lm3692x_led *led)
>   
>   	ret = lm3692x_fault_check(led);
>   	if (ret) {
> -		dev_err(&led->client->dev, "Cannot read/clear faults\n");
> +		dev_err(&led->client->dev, "Cannot read/clear faults: %d\n",
> +			ret);
>   		goto out;
>   	}
>   
> @@ -409,7 +411,8 @@ static int lm3692x_remove(struct i2c_client *client)
>   
>   	ret = regmap_update_bits(led->regmap, LM3692X_EN, LM3692X_DEVICE_EN, 0);
>   	if (ret) {
> -		dev_err(&led->client->dev, "Failed to disable regulator\n");
> +		dev_err(&led->client->dev, "Failed to disable regulator: %d\n",
> +			ret);
>   		return ret;
>   	}
>   
> @@ -420,7 +423,7 @@ static int lm3692x_remove(struct i2c_client *client)
>   		ret = regulator_disable(led->regulator);
>   		if (ret)
>   			dev_err(&led->client->dev,
> -				"Failed to disable regulator\n");
> +				"Failed to disable regulator: %d\n", ret);
>   	}
>   
>   	mutex_destroy(&led->lock);