linux-kernel - Re: [PATCH v2 05/13] iio: gyro: bmg160_spi: Use vsprintf extension %pe for symbolic error name

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Message-ID: <20200328141618.64938f3e@archlinux>
Date:   Sat, 28 Mar 2020 14:16:18 +0000
From:   Jonathan Cameron <jic23@...nel.org>
To:     Nishant Malpani <nish.malpani25@...il.com>
Cc:     andriy.shevchenko@...ux.intel.com, joe@...ches.com,
        knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 05/13] iio: gyro: bmg160_spi: Use vsprintf extension
 %pe for symbolic error name

On Sun, 22 Mar 2020 22:53:07 +0530
Nishant Malpani <nish.malpani25@...il.com> wrote:

> Utilize %pe format specifier from vsprintf while printing error logs
> with dev_err(). Discards the use of unnecessary explicit casting and
> prints symbolic error name which might prove to be convenient during
> debugging.
> 
> Signed-off-by: Nishant Malpani <nish.malpani25@...il.com>

Side note on this one.  Would have made sense to combine the two patches
for the bmg160 gyro into one, but doesn't really matter.

Applied.

Thanks,


> ---
> 
> Changes in v2:
>   - Rewrite commit subject line outlining the usage of %pe.
>   - Add a separator between regmap and its error name.
> 
> Based on conversations in [1] & [2].
> 
> [1] https://marc.info/?l=linux-iio&m=158427554607223&w=2
> [2] https://marc.info/?l=linux-iio&m=158481647605891&w=2
> ---
>  drivers/iio/gyro/bmg160_spi.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/gyro/bmg160_spi.c b/drivers/iio/gyro/bmg160_spi.c
> index 182a59c42507..6f82bbe0ae92 100644
> --- a/drivers/iio/gyro/bmg160_spi.c
> +++ b/drivers/iio/gyro/bmg160_spi.c
> @@ -19,8 +19,8 @@ static int bmg160_spi_probe(struct spi_device *spi)
>  
>  	regmap = devm_regmap_init_spi(spi, &bmg160_regmap_spi_conf);
>  	if (IS_ERR(regmap)) {
> -		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
> -			(int)PTR_ERR(regmap));
> +		dev_err(&spi->dev, "Failed to register spi regmap: %pe\n",
> +			regmap);
>  		return PTR_ERR(regmap);
>  	}
>