linux-kernel - Re: [PATCH v2 18/20] iio: magnetometer: Remove IRQF

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Message-ID: <20260129161323.6b491e95@jic23-huawei>
Date: Thu, 29 Jan 2026 16:13:23 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Andy Shevchenko <andriy.shevchenko@...el.com>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...nel.org>, Geert
 Uytterhoeven <geert+renesas@...der.be>, David Lechner
 <dlechner@...libre.com>, Nuno Sá <nuno.sa@...log.com>, Andy
 Shevchenko <andy@...nel.org>, linux-iio@...r.kernel.org
Subject: Re: [PATCH v2 18/20] iio: magnetometer: Remove IRQF_ONESHOT

On Wed, 28 Jan 2026 15:04:30 +0200
Andy Shevchenko <andriy.shevchenko@...el.com> wrote:

> On Wed, Jan 28, 2026 at 10:55:38AM +0100, Sebastian Andrzej Siewior wrote:
> > Passing IRQF_ONESHOT ensures that the interrupt source is masked until
> > the secondary (threaded) handler is done. If only a primary handler is
> > used then the flag makes no sense because the interrupt can not fire
> > (again) while its handler is running.
> > The flag also disallows force-threading of the primary handler and the
> > irq-core will warn about this.
> > The force-threading functionality is required on PREEMPT_RT because the
> > handler is using locks with can sleep on PREEMPT_RT.
> > 
> > Remove IRQF_ONESHOT from irqflags.  
> 
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...el.com>
> 
Applied.
Thanks