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hdac: Defer interrupt allocation in hdac_attach()
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Authored by markj on Sep 16 2023, 9:45 AM.
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Details

Summary

hdac_attach() registers an interrupt handler before allocating various
driver resources which are accessed by the interrupt handler. On some
platforms we observe what appear to be spurious interrupts upon a cold
boot, resulting in panics.

Partially work around the problem by deferring irq allocation until
after other resources are allocated. I think this is not a complete
solution, but is correct and sufficient to work around the problems
reported in the PR.

PR: 268393

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rG FreeBSD src repository
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