Re: 2.6.7-mm5 - more ACPI/IRQ badness?

[Jurgen Kramer <gtm.kramer@inter.nl.net>]

On Mon, 2004-07-05 at 21:39, Len Brown wrote:
> On Fri, 2004-07-02 at 14:20, Jurgen Kramer wrote:
> > After the issues with my EHCI controller I now hit another related
> > problem. This time the IRQ of my onboard ethernet controller is being
> > silenced. It happened when I removed the 3w-9xxx module which share
> > interrupts. I tried bringing the ethernet connection back to live by
> > doing a rmmod & insmod but that brought another 'Disabling IRQ..'
> > 
> > <snip>
> > Synchronizing SCSI cache for disk sde:
> > FAILED
> >   status = 0, message = 00, host = 1, driver = 00
> >   <4>3w-9xxx: Shutting down host 1.
> > 3w-9xxx: Shutdown complete.
> > irq 22: nobody cared!
> >  [<c0108106>] __report_bad_irq+0x2a/0x8b
> >  [<c01081f0>] note_interrupt+0x6f/0x9f
> >  [<c0108473>] do_IRQ+0x10c/0x10e
> >  [<c0106850>] common_interrupt+0x18/0x20
> > handlers:
> > [<f8a646f6>] (SkGeIsrOnePort+0x0/0x176 [sk98lin])
> > Disabling IRQ #22
> > eth0: network connection down
> > Badness in remove_proc_entry at fs/proc/generic.c:681
> >  [<c0189e18>] remove_proc_entry+0xfa/0x134
> >  [<f8a814eb>] skge_cleanup_module+0xc3/0x1c7 [sk98lin]
> >  [<c01354d6>] __try_stop_module+0x0/0x53
> >  [<c0132c6b>] sys_delete_module+0x14f/0x1a0
> >  [<c014c798>] do_munmap+0x126/0x15c
> >  [<c0105e91>] sysenter_past_esp+0x52/0x71
> > ACPI: PCI interrupt 0000:02:05.0[A] -> GSI 22 (level, low) -> IRQ 22
> > sk98lin: Network Device Driver v6.23
> > (C)Copyright 1999-2004 Marvell(R).
> > ACPI: PCI interrupt 0000:02:05.0[A] -> GSI 22 (level, low) -> IRQ 22
> > eth0: 3Com Gigabit LOM (3C940)
> >       PrefPort:A  RlmtMode:Check Link State
> > irq 22: nobody cared!
> >  [<c0108106>] __report_bad_irq+0x2a/0x8b
> >  [<c01081f0>] note_interrupt+0x6f/0x9f
> >  [<c0108473>] do_IRQ+0x10c/0x10e
> >  [<c0106850>] common_interrupt+0x18/0x20
> >  [<c010401e>] default_idle+0x0/0x2c
> >  [<c0104047>] default_idle+0x29/0x2c
> >  [<c01040b0>] cpu_idle+0x33/0x3c
> >  [<c031684b>] start_kernel+0x1a0/0x1dd
> >  [<c0316309>] unknown_bootoption+0x0/0x149
> > handlers:
> > [<f8a636f6>] (SkGeIsrOnePort+0x0/0x176 [sk98lin])
> > Disabling IRQ #22
> 
> Did this work in previous releases and broke in 2.6.7-mm5,
> or has it always not worked?

Normally I would not try to do this. With 2.6.5 I get this when I do a
'ifdown eth0 and rmmod sk98lin':

eth0: network connection down
Badness in remove_proc_entry at fs/proc/generic.c:660
Call Trace:
 [<c0189028>] remove_proc_entry+0x111/0x14b
 [<f8a7f4a7>] skge_cleanup_module+0xc3/0x1c3 [sk98lin]
 [<c0137957>] __try_stop_module+0x0/0x52
 [<c0135883>] sys_delete_module+0x136/0x16f
 [<c014ba32>] do_munmap+0x13a/0x18b
 [<c011a639>] do_page_fault+0x0/0x4cf
 [<c01091a9>] sysenter_past_esp+0x52/0x71

After insmodding it again it works as normal.

sk98lin: Network Device Driver v6.23
(C)Copyright 1999-2004 Marvell(R).
eth0: 3Com Gigabit LOM (3C940)
      PrefPort:A  RlmtMode:Check Link State
eth0: network connection up using port A
    speed:           1000
    autonegotiation: yes
    duplex mode:     full
    flowctrl:        symmetric
    role:            slave
    irq moderation:  disabled
    scatter-gather:  enabled

> 
> It appears that the ethernet device is still pulling on
> the interrupt line even after its driver is unloaded.
> The resulting interrutps are killing the other device
> which is trying to service that IRQ.
> 
> -Len
> 
Jurgen