On Sat, 4 Feb 2006, Martin Michlmayr wrote:
> I have a machine on which the de2104x driver doesn't work when
> uhci_hcd is loaded. It used to work fine with 2.4 and the tulip
> driver (and usb-uhci). Basically, when I boot I get the following
> traceback and then eth0 doesn't work. When I unload de2104x and
> uhci_hcd and load only de2104x again then Ethernet works. Similarly,
> when I completely blacklist the uhci_hcd module the de2104x driver
> works without any problems.
And presumably, if you blacklist the de2104x driver then your USB
controller works without any problems.
> eth0: enabling interface
> eth0: set link 10baseT auto
> eth0: mode 0x7ffc0040, sia 0x10c4,0xffffef01,0xffffffff,0xffff0008
> eth0: set mode 0x7ffc0040, set sia 0xef01,0xffff,0x8
> irq 10: nobody cared (try booting with the "irqpoll" option)
> [<c012f89e>] __report_bad_irq+0x31/0x73
> [<c012f96d>] note_interrupt+0x75/0x98
> [<c012f46a>] __do_IRQ+0x67/0x91
> [<c0104fc1>] do_IRQ+0x19/0x24
> [<c0103afa>] common_interrupt+0x1a/0x20
> [<c0119a1c>] __do_softirq+0x2c/0x7d
> [<c0119a8f>] do_softirq+0x22/0x26
> [<c0104fc6>] do_IRQ+0x1e/0x24
> [<c0103afa>] common_interrupt+0x1a/0x20
> [<c481da07>] de_set_rx_mode+0xf/0x12 [de2104x]
> [<c481e2c1>] de_init_hw+0x6d/0x76 [de2104x]
> [<c481e59e>] de_open+0x64/0xe4 [de2104x]
> [<c0225a5f>] dev_open+0x30/0x66
> [<c0226a9a>] dev_change_flags+0x4d/0xf0
> [<c025d301>] devinet_ioctl+0x224/0x4bd
> [<c0155541>] do_ioctl+0x21/0x50
> [<c0155774>] vfs_ioctl+0x152/0x161
> [<c01557cb>] sys_ioctl+0x48/0x65
> [<c0102a99>] syscall_call+0x7/0xb
> handlers:
> [<c4890d97>] (usb_hcd_irq+0x0/0x56 [usbcore])
> Disabling IRQ #10
For some reason, the de2104x driver isn't listed as a handler for IRQ 10.
That's probably the cause of the problem. Did you have any full- or
low-speed USB devices plugged in at the time this occurred? If you didn't
then the UHCI hardware would not have generated any interrupt requests.
Alan Stern
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