[PATCH] ASoC: meson: axg-fifo: fix irq scheduling issue with PREEMPT_RT

Sebastian Andrzej Siewior bigeasy at linutronix.de
Tue Aug 13 08:22:43 PDT 2024


On 2024-08-13 15:43:54 [+0100], Mark Brown wrote:
> On Tue, 06 Aug 2024 12:27:03 +0200, Jerome Brunet wrote:
> > With PREEMPT_RT enabled, spinlocks become preemptible.
> > This is usually not a problem with spinlocks used in IRQ context since
> > IRQ handlers get threaded. However, if IRQF_ONESHOT is set, the upper half
> > of a threaded irq handler won't be threaded and this causes scheduling
> > problems if spinlocks are used in the upper half, like with regmap when
> > '.fast_io' is set.
> > 
> > [...]
> 
> Applied to
> 
>    https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
> 
> Thanks!
> 
> [1/1] ASoC: meson: axg-fifo: fix irq scheduling issue with PREEMPT_RT
>       commit: 5003d0ce5c7da3a02c0aff771f516f99731e7390

Didn't you already apply v2 of this?

Sebastian



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