linux-kernel - Re: [PATCH 09/12] staging: iio: tsl2x7x: add missing error checks

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Date:   Sat, 10 Mar 2018 14:45:20 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Brian Masney <masneyb@...tation.org>
Cc:     linux-iio@...r.kernel.org, gregkh@...uxfoundation.org,
        devel@...verdev.osuosl.org, knaack.h@....de, lars@...afoo.de,
        pmeerw@...erw.net, linux-kernel@...r.kernel.org,
        Jon.Brenner@....com
Subject: Re: [PATCH 09/12] staging: iio: tsl2x7x: add missing error checks

On Sat,  3 Mar 2018 20:49:39 -0500
Brian Masney <masneyb@...tation.org> wrote:

> The functions in_illuminance0_calibrate_store() and
> in_illuminance0_lux_table_store() did not have complete error handling
> in place. This patch adds the missing error handling.
> 
> Signed-off-by: Brian Masney <masneyb@...tation.org>
Applied.

Thanks,
> ---
>  drivers/staging/iio/light/tsl2x7x.c | 14 ++++++++++----
>  1 file changed, 10 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/staging/iio/light/tsl2x7x.c b/drivers/staging/iio/light/tsl2x7x.c
> index 8adc6db44790..da7a4e025083 100644
> --- a/drivers/staging/iio/light/tsl2x7x.c
> +++ b/drivers/staging/iio/light/tsl2x7x.c
> @@ -940,8 +940,11 @@ static ssize_t in_illuminance0_calibrate_store(struct device *dev,
>  	if (strtobool(buf, &value))
>  		return -EINVAL;
>  
> -	if (value)
> -		tsl2x7x_als_calibrate(indio_dev);
> +	if (value) {
> +		ret = tsl2x7x_als_calibrate(indio_dev);
> +		if (ret < 0)
> +			return ret;
> +	}
>  
>  	ret = tsl2x7x_invoke_change(indio_dev);
>  	if (ret < 0)
> @@ -1006,8 +1009,11 @@ static ssize_t in_illuminance0_lux_table_store(struct device *dev,
>  		return -EINVAL;
>  	}
>  
> -	if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING)
> -		tsl2x7x_chip_off(indio_dev);
> +	if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
> +		ret = tsl2x7x_chip_off(indio_dev);
> +		if (ret < 0)
> +			return ret;
> +	}
>  
>  	/* Zero out the table */
>  	memset(chip->tsl2x7x_device_lux, 0, sizeof(chip->tsl2x7x_device_lux));