linux-kernel - Re: [PATCH 3/3] drivers: use probe

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Message-Id: <20181017091059eucas1p2919e8b5984d4b8998438251a26987068~eWli2LsTV3025130251eucas1p2r@eucas1p2.samsung.com>
Date:   Wed, 17 Oct 2018 11:10:57 +0200
From:   Andrzej Hajda <a.hajda@...sung.com>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Javier Martinez Canillas <javierm@...hat.com>,
        linux-arm Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH 3/3] drivers: use probe_err function in obvious cases

On 16.10.2018 15:51, Andy Shevchenko wrote:
> On Tue, Oct 16, 2018 at 10:22 AM Andrzej Hajda <a.hajda@...sung.com> wrote:
>> The patch replaces obviously matching code with probe_err function.
>> There are many more places where probe_err could be used.
>> The patch shows how the new function should be used, and how it
>> improves the code.
>> --- a/drivers/gpio/gpio-pca953x.c
>> +++ b/drivers/gpio/gpio-pca953x.c
>> @@ -824,9 +824,7 @@ static int pca953x_probe(struct i2c_client *client,
>>         reg = devm_regulator_get(&client->dev, "vcc");
>>         if (IS_ERR(reg)) {
>>                 ret = PTR_ERR(reg);
>> -               if (ret != -EPROBE_DEFER)
>> -                       dev_err(&client->dev, "reg get err: %d\n", ret);
>> -               return ret;
>> +               return probe_err(&client->dev, ret, "reg get err: %d\n", ret);
> No need to assign ret above.
> As I mentioned, better to print a value for everyone.

OK.

Thanks for all reviews. I have posted v2 of patches 1 and 2 as replies
in this thread.
As patch 3 requires splitting, adjusting arguments of probe_err (remove
err and newline), and depends on patch 1 I will prepare it and post
later, probably next cycle as suggested Javier.

Regards
Andrzej


>
>>         }
> Please, split it at least one patch per subsystem.
>