linux-kernel - Re: [PATCH v6 5/6] Staging: iio: adis16209: Use GENMASK

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Date:   Fri, 30 Mar 2018 12:40:21 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     Shreeya Patel <shreeya.patel23498@...il.com>
Cc:     knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        Michael.Hennerich@...log.com, gregkh@...uxfoundation.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        devel@...verdev.osuosl.org, daniel.baluta@...il.com
Subject: Re: [PATCH v6 5/6] Staging: iio: adis16209: Use GENMASK

On Thu, 29 Mar 2018 14:51:19 +0530
Shreeya Patel <shreeya.patel23498@...il.com> wrote:

> Use GENMASK to improve readability and remove the local
> variables used to store intermediate data.
> 
> Signed-off-by: Shreeya Patel <shreeya.patel23498@...il.com>
See below.

Fixed up and applied to the togreg branch of iio.git and pushed out
as testing for the autobuilders to play with it.

Thanks,

Jonathan

> ---
> 
> Changes in v6
>   -Introduce this new patch in the series.
> 
>  drivers/staging/iio/accel/adis16209.c | 19 ++++++++-----------
>  1 file changed, 8 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/staging/iio/accel/adis16209.c b/drivers/staging/iio/accel/adis16209.c
> index ed6d7c7..cc50667 100644
> --- a/drivers/staging/iio/accel/adis16209.c
> +++ b/drivers/staging/iio/accel/adis16209.c
> @@ -112,25 +112,22 @@ static int adis16209_write_raw(struct iio_dev *indio_dev,
>  			       long mask)
>  {
>  	struct adis *st = iio_priv(indio_dev);
> -	int bits;
> -	s16 val16;
> -	u8 addr;
> +	int m;
> +
> +	if (mask != IIO_CHAN_INFO_CALIBBIAS)
> +		return -EINVAL;
>  
> -	switch (mask) {
> -	case IIO_CHAN_INFO_CALIBBIAS:
Looks to me like the indenting is now incorrect.
The next block should be one less tab in.

>  		switch (chan->type) {
>  		case IIO_ACCEL:
>  		case IIO_INCLI:
> -			bits = 14;
> +			m = GENMASK(13, 0);
>  			break;
>  		default:
>  			return -EINVAL;
>  		}
> -		val16 = val & ((1 << bits) - 1);
> -		addr = adis16209_addresses[chan->scan_index][0];
> -		return adis_write_reg_16(st, addr, val16);
> -	}
> -	return -EINVAL;
> +
> +	return adis_write_reg_16(st, adis16209_addresses[chan->scan_index][0],
> +				 val & m);
>  }
>  
>  static int adis16209_read_raw(struct iio_dev *indio_dev,