linux-kernel - Re: [PATCH 3/3] rtc: ds1685: disable interrupts when moving work to work queue

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Message-Id: <20190412134939.cf32e03ba23cf8c8eef36bf4@suse.de>
Date:   Fri, 12 Apr 2019 13:49:39 +0200
From:   Thomas Bogendoerfer <tbogendoerfer@...e.de>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     Joshua Kinard <kumba@...too.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] rtc: ds1685: disable interrupts when moving work to
 work queue

On Fri, 12 Apr 2019 12:14:18 +0200
Alexandre Belloni <alexandre.belloni@...tlin.com> wrote:

> On 11/04/2019 16:33:23+0200, Thomas Bogendoerfer wrote:
> > Handling of extended interrupts (kickstart, wake-up, ram-clear) is
> > moved off to a work queue, but the interrupts aren't acknowledged
> > in the interrupt handler. This leads to a deadlock, if driver
> > is used with interrupts. To fix this we now disable in irq handler
> > and re-enable it after work queue is done.
> > 
> 
> The correct fix to that seems to switch to a threaded interrupt handler.
> Can you do that?

sure, shouldn't be a big problem.

Thomas.

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