linux-kernel - Re: [PATCH] gpio: sim: fix a memory leak

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Message-ID: <CAMRc=MfmMRUpv8ThWU1hW0pZBFNCoS3ODd23Z6ZZ_yuCo=2GTA@mail.gmail.com>
Date:   Thu, 16 Feb 2023 15:49:39 +0100
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Kent Gibson <warthog618@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mirsad Goran Todorovac <mirsad.todorovac@....unizg.hr>
Subject: Re: [PATCH] gpio: sim: fix a memory leak

On Thu, Feb 16, 2023 at 3:42 PM Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> wrote:
>
> On Thu, Feb 16, 2023 at 03:15:55PM +0100, Bartosz Golaszewski wrote:
> > Fix an inverted logic bug in gpio_sim_remove_hogs() that leads to GPIO
> > hog structures never being freed.
>
> Ha-ha, I stared to this code, and in the head I was "okay, this loop is until
> chip_label is *not* NULL, so should be fine".
>
> At the same time, "! is hard to process", see for example
> 2754435d4c82 ("ACPI / battery: get rid of negations in conditions")
> which I had suggested.
>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
>
> P.S. But my patch I mentioned looks also good to have, no?
>

I don't think it matters. In fact - I'm not sure if the order was
accidental or not anymore. :( If you want to discuss it further -
please resend it as a regular patch on the list.

Bart