linux-kernel - Re: [PATCH v3 04/28] staging: iio: tsl2583: remove unnecessary chip status check in taos_get

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Date:   Sat, 12 Nov 2016 16:28:39 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Brian Masney <masneyb@...tation.org>, linux-iio@...r.kernel.org
Cc:     devel@...verdev.osuosl.org, gregkh@...uxfoundation.org,
        lars@...afoo.de, pmeerw@...erw.net, knaack.h@....de,
        linux-kernel@...r.kernel.org, Jon.Brenner@....com
Subject: Re: [PATCH v3 04/28] staging: iio: tsl2583: remove unnecessary chip
 status check in taos_get_lux

On 10/11/16 09:25, Brian Masney wrote:
> taos_get_lux checks to see if the chip is in a working state. This
> check is not necessary since it is only called from tsl2583_read_raw
> and in_illuminance_calibrate_store (via taos_als_calibrate). The chip
> state is already checked by these functions.
> 
> Signed-off-by: Brian Masney <masneyb@...tation.org>
Looks good. Will pick up once patch 3 is sorted.
> ---
>  drivers/staging/iio/light/tsl2583.c | 7 -------
>  1 file changed, 7 deletions(-)
> 
> diff --git a/drivers/staging/iio/light/tsl2583.c b/drivers/staging/iio/light/tsl2583.c
> index eb59ea0..170b8e9 100644
> --- a/drivers/staging/iio/light/tsl2583.c
> +++ b/drivers/staging/iio/light/tsl2583.c
> @@ -178,13 +178,6 @@ static int taos_get_lux(struct iio_dev *indio_dev)
>  	u32 ch0lux = 0;
>  	u32 ch1lux = 0;
>  
> -	if (chip->taos_chip_status != TSL258X_CHIP_WORKING) {
> -		/* device is not enabled */
> -		dev_err(&chip->client->dev, "taos_get_lux device is not enabled\n");
> -		ret = -EBUSY;
> -		goto done;
> -	}
> -
>  	ret = i2c_smbus_read_byte_data(chip->client, TSL258X_CMD_REG);
>  	if (ret < 0) {
>  		dev_err(&chip->client->dev, "taos_get_lux failed to read CMD_REG\n");
>