Re: [PATCH v2 2/5] accel/ethosu: fix scheduler and IRQ lifetime

[Rob Herring <robh@kernel.org>]

On Fri, Jul 17, 2026 at 02:11:42PM +0800, GuoHan Zhao wrote:
> ethosu_job_init() requests the managed IRQ before initializing the DRM
> scheduler. If drm_sched_init() fails, the error path calls drm_sched_fini()
> on a partially initialized scheduler. The IRQ also remains registered until
> devres cleanup after normal or probe-error paths destroy the scheduler.
> 
> Initialize the scheduler before requesting the IRQ. Scheduler setup failure
> then needs no teardown, while IRQ setup failure can tear down a valid
> scheduler. Free the IRQ explicitly before drm_sched_fini() to prevent
> interrupt handlers from accessing scheduler state during teardown.

I don't think there's an actual issue here. The interrupt is never going 
to fire unless probe successfully completes because we reset the h/w and 
the interrupt only fires if we schedule something on it.

Rob