Parallel port detection via ACPI
Hey,
I have one question about using acpi_register_gsi() - this is an ia64 only thing, right?
Thing is, that I remember an exchange on the acpi mailing list mentioning that there is no legacy hardware on ia64 systems; wouldn't that also include the parallel port?
Quoted 18 lines
From: Bjorn Helgaas <[email protected]>
To: Dino Klein <[email protected]>
Subject: Re: [PATCH 2.6.7] Parallel port detection via ACPI
Date: Tue, 22 Jun 2004 17:42:36 -0600Nice start at this! As you note, it needs a little work. Here are a couple things I noticed:
- the ACPI stuff should be under #ifdef
CONFIG_ACPI
- the IRQ should be fed throughacpi_register_gsi()(a new interface that showed up in BK a few days ago)
- there are IRQ and extended IRQ structures -- maybe should be extended to handle both?
- seems like it'd be nice to arrange it so we look in ACPI first, then fall back to previous detection if that fails (probably with a boot-time option to disable the ACPI detection in case the firmware is buggy)
Quoted 4 lines
Again, good work! I'm glad to see us starting to take advantage of this stuff.
Bjorn
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