https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236513
--- Comment #22 from stockhau...@collogia.de ---
After a lot of investigation it seems to boil down to some kind of timing
problem.
acpi_resource.c:acpi_res_set_ioport() is called for the ACPI defined
ressources. In our case there are several IO ports according to acpidump:
0xcf8, 8 ports
0x0, 944 ports
0x3e0, 2328 ports
... and so on ...
Somewhere inside it calls acpi.c:acpi_set_resource(). But this silently fails
exactly here:
/* Don't reserve resources until the system resources are allocated. */
if (!sc->acpi_resources_reserved)
return (0);
Must be some kind of concurrency. Don't know yet where it comes from.
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