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Message-ID: <YfQeuWk0S4bxPVCg@google.com>
Date: Fri, 28 Jan 2022 16:50:01 +0000
From: Lee Jones <lee.jones@...aro.org>
To: Sergei Shtylyov <sergei.shtylyov@...il.com>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
greybus-dev@...ts.linaro.org, linux-i2c@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-staging@...ts.linux.dev,
linux-usb@...r.kernel.org, netdev@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
Alex Elder <elder@...nel.org>, Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Hans de Goede <hdegoede@...hat.com>,
Jakub Kicinski <kuba@...nel.org>,
Johan Hovold <johan@...nel.org>,
Rui Miguel Silva <rmfrfs@...il.com>,
Thomas Gleixner <tglx@...utronix.de>,
UNGLinuxDriver@...rochip.com, Wolfram Sang <wsa@...nel.org>,
Woojung Huh <woojung.huh@...rochip.com>
Subject: Re: [PATCH 4/7] mfd: hi6421-spmi-pmic: Use generic_handle_irq_safe().
On Fri, 28 Jan 2022, Sergei Shtylyov wrote:
> On 1/28/22 4:33 PM, Lee Jones wrote:
>
> >>> generic_handle_irq() is invoked from a regular interrupt service
> >>> routing. This handler will become a forced-threaded handler on
> >>
> >> s/routing/routine/?
> >>
> >>> PREEMPT_RT and will be invoked with enabled interrupts. The
> >>> generic_handle_irq() must be invoked with disabled interrupts in order
> >>> to avoid deadlocks.
> >>>
> >>> Instead of manually disabling interrupts before invoking use
> >>> generic_handle_irq() which can be invoked with enabled and disabled
> >>> interrupts.
> >>>
> >>> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> >> [...]
> >>
> >> MBR, Sergey
> >
> > What does that mean?
>
> Ah, you were asking about MBR! My best regards then. :-)
Yes this. It's okay, Dan was kind enough to enlighten me.
Every day is a school day on the list! :)
--
Lee Jones [李琼斯]
Principal Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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