Re: [PATCH] iio: fix warnings about passing signed values to %u

[Jonathan Cameron <jic23@jic23.retrosnub.co.uk>]

On Sat, 28 Nov 2020 15:56:48 +0000
Jonathan Cameron <jic23@kernel.org> wrote:

> From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> 
> In reality, we already know both of these values are positive
> but it is still better to make that explicit at the point of use
> with abs().
> 
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
> Reported-by: kernel test robot <lkp@intel.com>

Maintainers curse. If someone could sanity check this that would be great.
I never trust myself not to do anything stupid :)

Jonathan

> ---
>  drivers/iio/industrialio-core.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index c2e4c267c36b..00644666f7fe 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -608,14 +608,14 @@ static ssize_t __iio_format_value(char *buf, size_t len, unsigned int type,
>  			return scnprintf(buf, len, "-%d.%06u%s", abs(vals[0]),
>  					-vals[1], scale_db ? " dB" : "");
>  		else
> -			return scnprintf(buf, len, "%d.%06u%s", vals[0], vals[1],
> +			return scnprintf(buf, len, "%d.%06u%s", vals[0], abs(vals[1]),
>  					scale_db ? " dB" : "");
>  	case IIO_VAL_INT_PLUS_NANO:
>  		if (vals[1] < 0)
>  			return scnprintf(buf, len, "-%d.%09u", abs(vals[0]),
>  					-vals[1]);
>  		else
> -			return scnprintf(buf, len, "%d.%09u", vals[0], vals[1]);
> +			return scnprintf(buf, len, "%d.%09u", vals[0], abs(vals[1]));
>  	case IIO_VAL_FRACTIONAL:
>  		tmp2 = div_s64((s64)vals[0] * 1000000000LL, vals[1]);
>  		tmp1 = vals[1];