Re: [PATCH v2 1/4] iio: si1133: fix format string warnings

[Nathan Chancellor <nathan@kernel.org>]

On Thu, Jun 03, 2021 at 07:06:09PM +0100, Jonathan Cameron wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> clang complains about multiple instances of printing an integer
> using the %hhx format string:
> 
> drivers/iio/light/si1133.c:982:4: error: format specifies type 'unsigned char' but the argument has type 'unsigned int' [-Werror,-Wformat]
>                  part_id, rev_id, mfr_id);
>                  ^~~~~~~
> 
> Print them as a normal integer instead, leaving the "#02"
> length modifier.
> 
> Use the 0x02x form as the length specifier when used with # includes
> the 0x prefix and is very unlikely to be what was intended by the author.
> 
> Fixes: e01e7eaf37d8 ("iio: light: introduce si1133")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> Cc: Nathan Chancellor <nathan@kernel.org>
> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

Reviewed-by: Nathan Chancellor <nathan@kernel.org>

> ---
>  drivers/iio/light/si1133.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/light/si1133.c b/drivers/iio/light/si1133.c
> index c280b4195003..0accea7090ee 100644
> --- a/drivers/iio/light/si1133.c
> +++ b/drivers/iio/light/si1133.c
> @@ -978,11 +978,11 @@ static int si1133_validate_ids(struct iio_dev *iio_dev)
>  		return err;
>  
>  	dev_info(&iio_dev->dev,
> -		 "Device ID part %#02hhx rev %#02hhx mfr %#02hhx\n",
> +		 "Device ID part 0x%02x rev 0x%02x mfr 0x%02x\n",
>  		 part_id, rev_id, mfr_id);
>  	if (part_id != SI1133_PART_ID) {
>  		dev_err(&iio_dev->dev,
> -			"Part ID mismatch got %#02hhx, expected %#02x\n",
> +			"Part ID mismatch got 0x%02x, expected 0x%02x\n",
>  			part_id, SI1133_PART_ID);
>  		return -ENODEV;
>  	}
> -- 
> 2.31.1