[SWLUG] iPod Support

[Peter Prior]

> 
> kernel: usb 4-6: new high speed USB device using address 2
> kernel: irq 21: nobody cared!
> kernel:  [dump_stack+30/32] dump_stack+0x1e/0x20
> kernel:  [<c0107bfe>] dump_stack+0x1e/0x20
> kernel:  [__report_bad_irq+43/144] __report_bad_irq+0x2b/0x90
> kernel:  [<c01090ab>] __report_bad_irq+0x2b/0x90
> kernel:  [note_interrupt+144/176] note_interrupt+0x90/0xb0
> kernel:  [<c01091c0>] note_interrupt+0x90/0xb0
> kernel:  [do_IRQ+224/256] do_IRQ+0xe0/0x100
> kernel:  [<c0109430>] do_IRQ+0xe0/0x100
> kernel:  [common_interrupt+24/32] common_interrupt+0x18/0x20
> kernel:  [<c010778c>] common_interrupt+0x18/0x20
> kernel:  [cpu_idle+45/64] cpu_idle+0x2d/0x40
> kernel:  [<c01050ed>] cpu_idle+0x2d/0x40
> kernel:  [md_setup_args+1252/5120] start_kernel+0x184/0x1c0
> kernel:  [<c0388824>] start_kernel+0x184/0x1c0
> kernel:  [L6+0/2] 0xc010019f
> kernel:  [<c010019f>] 0xc010019f
> kernel: handlers:
> kernel: [pg0+274883424/1069604864] (usb_hcd_irq+0x0/0x70 [usbcore])
> kernel: [<d0a16360>] (usb_hcd_irq+0x0/0x70 [usbcore])
> kernel: [pg0+274883424/1069604864] (usb_hcd_irq+0x0/0x70 [usbcore])
> kernel: [<d0a16360>] (usb_hcd_irq+0x0/0x70 [usbcore])
> kernel: [pg0+274883424/1069604864] (usb_hcd_irq+0x0/0x70 [usbcore])
> kernel: [<d0a16360>] (usb_hcd_irq+0x0/0x70 [usbcore])
> kernel: Disabling IRQ #21
> kernel: usb 4-6: control timeout on ep0out
> kernel: ehci_hcd 0000:00:10.3: Unlink after no-IRQ?  Different ACPI or
> APIC settings may help.
> kernel: usb 4-6: control timeout on ep0out
> kernel: usb 4-6: device not accepting address 2, error -110
> 
>

Looks like an IRQ issue.

Try booting the kernel with noapic as as kernel parameter

if that doesn't work, boot with noapic pci=noacpi

Pete