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From:   Andy Shevchenko <andy.shevchenko@gmail.com>
Date:   Thu, 8 Apr 2021 01:51:28 +0300
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Subject: Re: [next] [arm64] [gpio] BUG: key has not been registered! DEBUG_LOCKS_WARN_ON:
To:     Naresh Kamboju <naresh.kamboju@linaro.org>
Cc:     "open list:GPIO SUBSYSTEM" <linux-gpio@vger.kernel.org>,
        Linux-Next Mailing List <linux-next@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        lkft-triage@lists.linaro.org,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@vger.kernel.org>,
        Stephen Rothwell <sfr@canb.auug.org.au>,
        Arnd Bergmann <arnd@arndb.de>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Colin King <colin.king@canonical.com>,
        Christian Brauner <christian.brauner@ubuntu.com>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>
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On Thu, Apr 8, 2021 at 12:38 AM Naresh Kamboju
<naresh.kamboju@linaro.org> wrote:
>
> While running kselftest recently added gpio gpio-sim.sh test case the following
> warning was triggered on Linux next tag 20210330 tag running on arm64 juno
> and hikey devices.
>
> GOOD: next-20210326
> BAD: next-20210330
>
> This is still happening today on Linux next tag 20210407.

Can you add the following

  sysfs_attr_init(attrs[i]);

to the end of the loop in gpio_sim_setup_sysfs()?

If it fixes an issue I'll send a formal patch.

-- 
With Best Regards,
Andy Shevchenko