Re: is L1 really disabled in iwlwifi

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On Mon, Mar 4, 2013 at 10:58 AM, Emmanuel Grumbach <egrumbach@xxxxxxxxx> wrote:
> On Mon, Mar 4, 2013 at 5:48 PM, Stanislaw Gruszka <sgruszka@xxxxxxxxxx> wrote:
>> On Mon, Mar 04, 2013 at 04:57:46PM +0200, Emmanuel Grumbach wrote:
>>
>>> This is what I did. On 3.7, lspci tells me that ASPM is enabled before
>>> I load the module. And same after I load the module.
>>
>> CONFIG_PCIEASPM disabled ?
>>
>
> nope - enabled on both kernel: 3.1 and 3.7. Makes sense though.
> CONFIG_PCIEASPM enabled, I have L1. Just wondering why doesn't that
> pci_disable_link_state do anything....
> Also, I remember so issues Mathew Garret debugged and he ended up
> disabling ASPM on older kernel because some BIOS issue (don't remember
> really). Apparently, ASPM is enabled again in newer kernels.
>
> Anyway - I think I will just remove this pci_disable_link_state call
> and hopefully, it will stay long enough in linux-next so that people
> will report issues before it get into linux.
> I don't like leaving that code if it doesn't do anything.

I think we broke at least some cases of pci_disable_link_state() a
while back.  I'd like to fix it rather than just removing calls to it.

Can someone collect a complete dmesg log and "lspci -vv" output?

Bjorn
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