linux-kernel - Re: [PATCH v2 09/18] iio: afe: iio-rescale: Simplify with dev_err

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <f4a5777e-fe85-9f3f-4818-f7539f223adc@axentia.se>
Date:   Thu, 27 Aug 2020 23:46:40 +0200
From:   Peter Rosin <peda@...ntia.se>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Hartmut Knaack <knaack.h@....de>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Peter Meerwald-Stadler <pmeerw@...erw.net>,
        Kukjin Kim <kgene@...nel.org>,
        Michael Hennerich <Michael.Hennerich@...log.com>,
        Kevin Hilman <khilman@...libre.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Marek Vasut <marek.vasut@...il.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Beniamin Bia <beniamin.bia@...log.com>,
        Tomasz Duszynski <tomasz.duszynski@...akon.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org,
        linux-amlogic@...ts.infradead.org,
        linux-stm32@...md-mailman.stormreply.com
Subject: Re: [PATCH v2 09/18] iio: afe: iio-rescale: Simplify with
 dev_err_probe()

On 2020-08-27 21:26, Krzysztof Kozlowski wrote:
> Common pattern of handling deferred probe can be simplified with
> dev_err_probe().  Less code and also it prints the error value.
> 
> Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
> 
> ---
> 
> Changes since v1:
> 1. Wrap dev_err_probe() lines at 100 character
> ---
>  drivers/iio/afe/iio-rescale.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c
> index 69c0f277ada0..8cd9645c50e8 100644
> --- a/drivers/iio/afe/iio-rescale.c
> +++ b/drivers/iio/afe/iio-rescale.c
> @@ -276,11 +276,8 @@ static int rescale_probe(struct platform_device *pdev)
>  	int ret;
>  
>  	source = devm_iio_channel_get(dev, NULL);
> -	if (IS_ERR(source)) {
> -		if (PTR_ERR(source) != -EPROBE_DEFER)
> -			dev_err(dev, "failed to get source channel\n");
> -		return PTR_ERR(source);
> -	}
> +	if (IS_ERR(source))
> +		return dev_err_probe(dev, PTR_ERR(source), "failed to get source channel\n");

Hi!

Sorry to be a pain...but...

I'm not a huge fan of adding *one* odd line breaking the 80 column
recommendation to any file. I like to be able to fit multiple
windows side by side in a meaningful way. Also, I don't like having
a shitload of emptiness on my screen, which is what happens when some
lines are longer and you want to see it all. I strongly believe that
the 80 column rule/recommendation is still as valid as it ever was.
It's just hard to read longish lines; there's a reason newspapers
columns are quite narrow...

Same comment for the envelope-detector (3/18).

You will probably never look at these files again, but *I* might have
to revisit them for one reason or another, and these long lines will
annoy me when that happens.

You did wrap the lines for dpot-dac (12/18) - which is excellent - but
that makes me curious as to what the difference is?

Cheers,
Peter

>  
>  	sizeof_ext_info = iio_get_channel_ext_info_count(source);
>  	if (sizeof_ext_info) {
>