Re: request_irq() usage in wm8350_register_irq().

From: Mark Brown

Date: Wed Jan 21 2026 - 10:44:39 EST


On Wed, Jan 21, 2026 at 02:45:08PM +0100, Sebastian Andrzej Siewior wrote:
> On 2026-01-21 13:37:09 [+0000], Mark Brown wrote:

> > The chip is only accessable via I2C or SPI so the primary interrupt
> > handler is itself always running and reporting child interrupts in
> > threaded context. They can't really deliver a hardirq context
> > interrupt.

> In that case it lacks the needed IRQF_ONEHOST flag and nobody noticed
> that request_irq() fails for a few years now. I add a patch to my
> stack…

Thanks.

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