Maybe it's not expected to work this way - but if so, it should return
error, not crash when ehci-hcd is loaded befor ohci-hcd. If I load
ohci-hcd first, it's all working fine.
After this the ehci-hcd module gets stuck unremoveable in module-init,
but the box remains useable to some extent.
Backtrace below is from 2.5.40.
Martin
----------------
PCI: Found IRQ 11 for device 00:0c.2
PCI: Sharing IRQ 11 with 00:0a.0
hcd-pci.c: ehci-hcd @ 00:0c.2, NEC Corporation USB 2.0
hcd-pci.c: irq 11, pci mem cc871000
Unable to handle kernel paging request at virtual address 5a5a5a96
printing eip:
cc85bd5f
*pde = 00000000
Oops: 0000
ehci-hcd parport_pc lp parport usblp usbcore ne2k-pci 8390 crc32 rtc
CPU: 0
EIP: 0060:[<cc85bd5f>] Not tainted
EFLAGS: 00010282
EIP is at create_special_files+0xbf/0x130 [usbcore]
eax: 5a5a5a5a ebx: 00000000 ecx: cb3b1208 edx: cb3b143c
esi: cb655080 edi: cc85ed80 ebp: 00000000 esp: c77d9df0
ds: 0068 es: 0068 ss: 0068
Process insmod (pid: 1486, threadinfo=c77d8000 task=caa5b7c0)
Stack: 00000000 cc863240 00000000 00000000 cc862d48 cc85be76 cc862d48 cc862d48
cc862d48 cb655080 cc8542a5 cb655080 cb6550e8 cb655080 dd000000 00000000
c135baf8 cc857f44 cb655080 c135bb48 c77d9e54 00000000 cc871000 00000100
Call Trace:
[<cc863240>]usbdevfs_devices_fops+0x0/0x60 [usbcore]
[<cc862d48>]usb_bus_list_lock+0x0/0x18 [usbcore]
[<cc85be76>]usbfs_add_bus+0x16/0xe0 [usbcore]
[<cc862d48>]usb_bus_list_lock+0x0/0x18 [usbcore]
[<cc862d48>]usb_bus_list_lock+0x0/0x18 [usbcore]
[<cc862d48>]usb_bus_list_lock+0x0/0x18 [usbcore]
[<cc8542a5>]usb_register_bus_Rsmp_58e62eeb+0xf5/0x110 [usbcore]
[<cc857f44>]usb_hcd_pci_probe_Rsmp_32071573+0x324/0x350 [usbcore]
[<cc86eda0>]ehci_driver+0x0/0x3c [ehci-hcd]
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<c01accbf>]pci_device_probe+0x3f/0x60
[<cc86eddc>]pci_ids+0x0/0x38 [ehci-hcd]
[<cc86ee40>]ehci_pci_driver+0x0/0x144 [ehci-hcd]
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<c01b4918>]probe+0x18/0x30
[<c01b49f5>]found_match+0x25/0x50
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<c01b4b18>]do_driver_attach+0x38/0x50
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<c01b592b>]bus_for_each_dev+0xab/0x160
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<c01b4b42>]driver_attach+0x12/0x20
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<c01b4ae0>]do_driver_attach+0x0/0x50
[<c01b6024>]driver_register+0xd4/0xf0
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<c01acdc6>]pci_register_driver+0x36/0x50
[<cc86ee68>]ehci_pci_driver+0x28/0x144 [ehci-hcd]
[<cc86e4ae>]init_module+0xe/0x40 [ehci-hcd]
[<cc86ee40>]ehci_pci_driver+0x0/0x144 [ehci-hcd]
[<c011ee55>]sys_init_module+0x5a5/0x6b0
[<cc86ef84>].kmodtab+0x0/0xc [ehci-hcd]
[<cc86a060>]handshake+0x0/0x70 [ehci-hcd]
[<c01077f7>]syscall_call+0x7/0xb
Code: ff 70 3c 66 a1 6c 30 86 cc 0d 00 80 00 00 0f b7 c0 50 68 ed
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