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Date:   Mon, 25 Apr 2022 12:11:09 -0700
From:   Jakub Kicinski <kuba@kernel.org>
To:     Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc:     Loic Poulain <loic.poulain@linaro.org>,
        Sergey Ryazanov <ryazanov.s.a@gmail.com>,
        Johannes Berg <johannes@sipsolutions.net>,
        "David S. Miller" <davem@davemloft.net>,
        Paolo Abeni <pabeni@redhat.com>,
        Network Development <netdev@vger.kernel.org>
Subject: Re: [PATCH v2] wwan_hwsim: Avoid flush_scheduled_work() usage
Message-ID: <20220425121109.614a2f53@kernel.org>
In-Reply-To: <7390d51f-60e2-3cee-5277-b819a55ceabe@I-love.SAKURA.ne.jp>
References: <7390d51f-60e2-3cee-5277-b819a55ceabe@I-love.SAKURA.ne.jp>
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On Fri, 22 Apr 2022 12:01:24 +0900 Tetsuo Handa wrote:
> Flushing system-wide workqueues is dangerous and will be forbidden.
> Replace system_wq with local wwan_wq.
> 
> While we are at it, make err_clean_devs: label of wwan_hwsim_init()
> behave like wwan_hwsim_exit(), for it is theoretically possible to call
> wwan_hwsim_debugfs_devcreate_write()/wwan_hwsim_debugfs_devdestroy_write()
> by the moment wwan_hwsim_init_devs() returns.
> 
> Link: https://lkml.kernel.org/r/49925af7-78a8-a3dd-bce6-cfc02e1a9236@I-love.SAKURA.ne.jp
> Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
> Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>

Commit cc271ab86606 ("wwan_hwsim: Avoid flush_scheduled_work() usage")
in net-next now, thanks!