linux-kernel - Re: [PATCH v2] kobject: to use pr_warn replace KERN

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Date:   Tue, 6 Nov 2018 09:09:15 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Joe Perches <joe@...ches.com>
Cc:     "Rafael J. Wysocki" <rafael@...nel.org>, tsu.yubo@...il.com,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] kobject: to use pr_warn replace KERN_WARNING

On Tue, Nov 6, 2018 at 8:58 AM Joe Perches <joe@...ches.com> wrote:
>
> On Tue, 2018-11-06 at 08:49 +0100, Rafael J. Wysocki wrote:
> > On Tue, Nov 6, 2018 at 3:42 AM Bo YU <tsu.yubo@...il.com> wrote:
> > > Fix warning form checkpatch, use pr_warn replace KERN_WARNING
> > >
> > > Signed-off-by: Bo YU <tsu.yubo@...il.com>
> >
> > First off, IMO, you should not change the existing code just in order
> > to make checkpatch happy about it.  That alone is not a good enough
> > reason for modifying it.
> >
> > If the checkpatch warning indicates an issue like broken white space
> > (and I mean really broken and not lines longer than 80 chars etc),
> > then that may be a reason to modify the existing code, depending.
>
> Existing code is slightly broken.
> There is currently a missing terminating newline in the
> non-switch case match, when msg == NULL;

OK, so this should be explained in the patch changelog.

Saying "I do this to make checkpatch happy" in the changelog is just
not enough IMO (if not outright misleading).