Date: Sun, 20 Sep 2009 22:33:59 -0400 From: "David E. Cross" <crossd@cs.rpi.edu> To: freebsd-current@freebsd.org Subject: psm0: unable to allocation IRQ (solution, well workaround) Message-ID: <1253500439.24101.8.camel@kagome>
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I recently stumbled across this bug, and I have a solution to my specific case. The problem is the following: acpi_ibm0: <IBM ThinkPad ACPI Extras> irq 12 on acpi0 _IF_, I put "device acpi_ibm" into the kernel config, disaster, psm0 is unable to attach. If I "acpi_ibm_load="YES"" in /boot/loader.conf, I then get the following: acpi_ibm0: <IBM ThinkPad ACPI Extras> on acpi0 Note the lack of "irq12" Which then frees up: psm0: <PS/2 Mouse> irq 12 on atkbdc0 Now, psm0 maps its IRQ as RF_SHAREABLE, so it _should_ work regardless, right? I'd regard this as a fairly serious bug. I'm really at a loss of where to track it down more, looking at the acpi_ibm code, its pretty opaque as to how resource allocations are done and why this would ever map irq 12 (well, at least to me). -- David E. Cross
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