Hi,
> In general, I think that calling free_irq is the right behavior.
> Although irqs changing after suspend is rare, there are also some
> more serious issues. This has been discussed in the past, and a
> summary is as follows:
irqs actually isn't changed after suspend currently, it's a considering
for future usage like hotplug.
Calling free_irq actually isn't a complete ACPI issue, but ACPI requires
it to solve nasty 'sleep in atomic' warning. You will find such break
with swsusp without ACPI. Could we revert the ACPI change in Linus's
tree but keep it in -mm tree? So we get a chance to fix drivers.
Thanks,
Shaohua
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