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Date:   Mon, 23 Aug 2021 18:14:01 +0200
From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     Jeaho Hwang <jhhwang@rtst.co.kr>
Cc:     Peter Chen <peter.chen@kernel.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
        Thomas Gleixner <tglx@linutronix.de>,
        linux-rt-users@vger.kernel.org, Linux team <team-linux@rtst.co.kr>,
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Subject: Re: [PATCH v2] usb: chipidea: local_irq_save/restore added for
 hw_ep_prime
Message-ID: <20210823161401.ix6l33o3sja7sy45@linutronix.de>
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On 2021-08-21 16:04:01 [+0900], Jeaho Hwang wrote:
> 2021=EB=85=84 8=EC=9B=94 21=EC=9D=BC (=ED=86=A0) =EC=98=A4=ED=9B=84 2:05,=
 Peter Chen <peter.chen@kernel.org>=EB=8B=98=EC=9D=B4 =EC=9E=91=EC=84=B1:
> >
> HI Peter.
>=20
> We configured the kernel as "low latency desktop" and added
> "threadirqs" inside the cmdline parameter.
> Then udc irq handler runs as a thread and shows no suspicious working.
> I Hope It will help.

May I again point out that since commit
   81e2073c175b8 ("genirq: Disable interrupts for force threaded handlers")=
                                                                           =
             =20

the threaded handler runs with disabled interrupts. This time more
verbose. It is available since v5.12-rc4 but it has been also applied
for stable.

> Thanks.

Sebastian