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[Bug 375836] parallel driver grabs IRQ14 preventing legacy SFF ATA controller from working
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 16 May 2008 12:46:25 -0600 (MDT)
  • Message-id: <20080516184625.EA37124538D@xxxxxxxxxxxxxxxxxxxxxx>
https://bugzilla.novell.com/show_bug.cgi?id=375836

User bjorn.helgaas@xxxxxx added comment
https://bugzilla.novell.com/show_bug.cgi?id=375836#c22





--- Comment #22 from Bjorn Helgaas <bjorn.helgaas@xxxxxx> 2008-05-16 12:46:25
MST ---
Is this a regression? If so, what kernel version worked and when did it start
failing?

With the device disabled in BIOS, you might be able to boot without
"pnpacpi=off" if you rename the parport_pc driver to prevent it from loading.
It would be interesting to see the DSDT, the /sys/.../resources and
/sys/.../options files, and /proc/interrupts.

When PNP binds a driver to a device, it activates the device if it is inactive.
That probably turns on the device even if it was initially disabled by the
BIOS switch. But I don't know why the IRQ should be different in this case.


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