Re: [PATCH v2 09/18] iio: afe: iio-rescale: Simplify with dev_err_probe()

Peter Rosin
2020-08-27T21:46:53Z

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@kernel.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) {
>