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

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Message-ID: <aXoJXg5JFnFXZqUT@smile.fi.intel.com>
Date: Wed, 28 Jan 2026 15:04:30 +0200
From: Andy Shevchenko <andriy.shevchenko@...el.com>
To: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Jonathan Cameron <jic23@...nel.org>,
	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, 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>

-- 
With Best Regards,
Andy Shevchenko