On 10/06/2010 03:52 PM, Thomas Gleixner wrote:
> On Wed, 6 Oct 2010, Yinghai Lu wrote:
>
>> On 10/05/2010 03:22 AM, Thomas Gleixner wrote:
>>> On Sun, 3 Oct 2010, Thomas Gleixner wrote:
>>>> On Sun, 3 Oct 2010, Grant Likely wrote:
>>>>> Okay, patch 14 looks good to me too (including Yinghai's comment).
>>>>> The new allocator seems sane, and I didn't see any obvious errors in
>>>>> patches 16-47. I've not tested any of this yet. Hopefully I'll be
>>>>> able to carve out some time to do so early this week.
>>>>
>>>> Wait until I pushed out a fixed tree. In meantime I found out how I
>>>> managed to screw up the quilt series :(
>>>>
>>>> Will post, once it's ready.
>>>
>>> Pushed out an updated tree to
>>>
>>> git://git.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-sparse-irq.git master
>>>
>>
>> test it together with tip, it seems all io apic routing is not set rightly. MSI is ok...
>>
>> [ 200.290040] ehci_hcd 0000:00:1d.7: PCI INT A -> GSI 23 (level, low) -> IRQ 23
>> [ 200.290991] ehci_hcd 0000:00:1d.7: setting latency timer to 64
>> [ 200.310002] ehci_hcd 0000:00:1d.7: EHCI Host Controller
>> [ 200.310455] ehci_hcd 0000:00:1d.7: new USB bus registered, assigned bus number 1
>> [ 200.330127] ehci_hcd 0000:00:1d.7: debug port 1
>> [ 200.334395] ehci_hcd 0000:00:1d.7: cache line size of 256 is not supported
>> [ 200.350042] ehci_hcd 0000:00:1d.7: request interrupt 23 failed
>> [ 200.350491] ehci_hcd 0000:00:1d.7: USB bus 1 deregistered
>> [ 200.372257] ehci_hcd 0000:00:1d.7: PCI INT A disabled
>> [ 200.372644] ehci_hcd 0000:00:1d.7: init 0000:00:1d.7 fail, -38
>> [ 200.389916] ehci_hcd: probe of 0000:00:1d.7 failed with error -38
>
> Yep. Ingo's testing found that already. Does the patch below fix it ?
>
> Thanks,
>
> tglx
> ---
> diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
> index 2f171df..eb3d01d 100644
> --- a/arch/x86/kernel/apic/io_apic.c
> +++ b/arch/x86/kernel/apic/io_apic.c
> @@ -252,11 +252,15 @@ static struct irq_cfg *alloc_irq_and_cfg_at(unsigned int at, int node)
> static struct irq_cfg *get_irq_cfg_at(unsigned int at, int node)
> {
> int res = irq_alloc_desc_at(at, node);
> + struct irq_data *data;
>
> if (res < 0 && res != -EEXIST)
> return NULL;
>
> - return get_irq_chip_data(at);
> + data = irq_get_irq_data(at);
> + if (res >= 0 && !data->chip_data)
> + data->chip_data = alloc_irq_cfg(at, node);
> + return data->chip_data;
> }
>
> static int alloc_irq_from(unsigned int from, int node)
yes, it fixes the problem.
but can you merge get_irq_cfg_at() and alloc_irq_and_cfg_at() ?
it's confusing to let get_...() to do the alloc work.
Thanks
Yinghai
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