No APIC interrupts after ACPI suspend

Matthew Garrett
2004-06-25T10:47:47Z

If I do an S3 suspend, my machine resumes correctly (Thinkpad X40,
acpi_sleep=s3_bios passed on the command line). If I have the ioapic
enabled, however, I get no interrupts after resume. Hacking in a call to
APIC_init_uniprocessor in the resume path improves things - I get edge
triggered interrupts, but anything flagged as level triggered doesn't
work. How can I get the ioapic fully initialised on resume?
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Matthew Garrett | mjg59@srcf.ucam.org