linux-kernel - Re: [PATCH v8 1/6] fieldbus_dev: add Fieldbus Device subsystem.

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Message-ID: <CAGngYiXjJtGNLAV_jvoj2NsjD+UCnK_Q+ZssgSwAukYAXdgE2A@mail.gmail.com>
Date:   Fri, 8 Feb 2019 11:30:22 -0500
From:   Sven Van Asbroeck <thesven73@...il.com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Sven Van Asbroeck <svendev@...x.com>, robh+dt@...nel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Lee Jones <lee.jones@...aro.org>, mark.rutland@....com,
        Andreas Färber <afaerber@...e.de>,
        treding@...dia.com, David Lechner <david@...hnology.com>,
        noralf@...nnes.org, johan@...nel.org,
        Michal Simek <monstr@...str.eu>, michal.vokac@...ft.com,
        Arnd Bergmann <arnd@...db.de>, john.garry@...wei.com,
        geert+renesas@...der.be, robin.murphy@....com,
        Paul Gortmaker <paul.gortmaker@...driver.com>,
        sebastien.bourdelin@...oirfairelinux.com, icenowy@...c.io,
        Stuart Yoder <stuyoder@...il.com>, maxime.ripard@...tlin.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v8 1/6] fieldbus_dev: add Fieldbus Device subsystem.

On Fri, Feb 8, 2019 at 7:18 AM Greg KH <gregkh@...uxfoundation.org> wrote:
>
> > +static DEFINE_IDA(fieldbus_ida);
>
> You forget to destroy this ida structure when the module is removed.
> It's a common thing to get wrong :(
>

But fieldbus_ida is allocated on the heap. So as long as calls to
ida_simple_get() and ida_simple_remove() are matched, there
should be no resource leak?

What am I missing?