Jeff Garzik wrote:
> Ian Wienand wrote:
>> Hi,
>>
>> When rebooting today I got
>>
>> Will now restart.
>> ACPI: PCI interrupt for device 0000:00:03.0 disabled
>> GSI 20 (level, low) -> CPU 1 (0x0100) vector 53 unregistered
>> Destroying IRQ53 without calling free_irq
>> WARNING: at
>> /home/insecure/ianw/programs/git-kernel/linux-2.6/kernel/irq/chip.c:76
>> dynamic_irq_cleanup()
>>
>> Call Trace:
>> [<a000000100014340>] show_stack+0x40/0xa0
>> sp=e00000407c927b40 bsp=e00000407c920eb8
>> [<a0000001000143d0>] dump_stack+0x30/0x60
>> sp=e00000407c927d10 bsp=e00000407c920ea0
>> [<a0000001000e58e0>] dynamic_irq_cleanup+0x160/0x1e0
>> sp=e00000407c927d10 bsp=e00000407c920e70
>> [<a0000001000106b0>] destroy_and_reserve_irq+0x30/0xc0
>> sp=e00000407c927d10 bsp=e00000407c920e40
>> [<a0000001000508f0>] iosapic_unregister_intr+0x5b0/0x5e0
>> sp=e00000407c927d10 bsp=e00000407c920dd8
>> [<a00000010000aa70>] acpi_unregister_gsi+0x30/0x60
>> sp=e00000407c927d10 bsp=e00000407c920db8
>> [<a00000010042e300>] acpi_pci_irq_disable+0x140/0x160
>> sp=e00000407c927d10 bsp=e00000407c920d88
>> [<a000000100774200>] pcibios_disable_device+0xa0/0xc0
>> sp=e00000407c927d20 bsp=e00000407c920d68
>> [<a0000001003778d0>] pci_disable_device+0x130/0x160
>> sp=e00000407c927d20 bsp=e00000407c920d38
>> [<a000000100525d20>] e100_shutdown+0x1c0/0x220
>> sp=e00000407c927d30 bsp=e00000407c920d08
>> [<a00000010037d0e0>] pci_device_shutdown+0x80/0xc0
>> sp=e00000407c927d30 bsp=e00000407c920ce8
>> [<a0000001004ecb70>] device_shutdown+0xf0/0x180
>> sp=e00000407c927d30 bsp=e00000407c920cc8
>> [<a0000001000ac4e0>] kernel_restart+0x60/0x120
>> sp=e00000407c927d30 bsp=e00000407c920ca8
>> [<a0000001000ac990>] sys_reboot+0x3b0/0x480
>> sp=e00000407c927d30 bsp=e00000407c920c30
>> [<a00000010000b4e0>] ia64_ret_from_syscall+0x0/0x20
>> sp=e00000407c927e30 bsp=e00000407c920c30
>> [<a000000000010620>] ia64_ivt+0xffffffff00010620/0x400
>> sp=e00000407c928000 bsp=e00000407c920c30
>> Restarting system.
>>
>> I think the solution might be to free the IRQ before the
>> pci_device_shutdown
>>
>> Signed-off-by: Ian Wienand <[email protected]>
>>
>> ---
>>
>> e100.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/net/e100.c b/drivers/net/e100.c
>> index 3dbaec6..8ae5ac3 100644
>> --- a/drivers/net/e100.c
>> +++ b/drivers/net/e100.c
>> @@ -2782,6 +2782,7 @@ static void e100_shutdown(struct pci_dev *pdev)
>> pci_enable_wake(pdev, PCI_D3cold, 0);
>> }
>>
>> + free_irq(pdev->irq, netdev);
>> pci_disable_device(pdev);
>> pci_set_power_state(pdev, PCI_D3hot);
>
> agreed, though I think free_irq() should come after pci_disable_device()
> like it does in e100_suspend().
>
> auke?
I actually think that's unintentional (the free_irq being after
pci_disable_device()) and possibly wrong. Looking at all our other drivers and
various others I see a consistent pattern of enable_device->enable_irq ->
free_irq->disable_device which makes much more sense to me since it's symmetric
and you can't enable irq's on a disabled device anyway.
So, I'd like to ACK this patch and I'll owe you a patch to fix the order up for
the e100_suspend code to change the order - but obviously I'll give that one a
test first.
Acked-by: Auke Kok <[email protected]>
Thanks,
Auke
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