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SubjectRe: [PATCH] PCI: pciehp: clear cmd_busy bit when Command Completed in polling mode
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Sorry for the late reply, the machine is occupied by someone else.

For detailed information:

https://bugzilla.kernel.org/show_bug.cgi?id=215143


Thanks,

Liguang

在 2021/11/21 14:35, Lukas Wunner 写道:
> On Sun, Nov 21, 2021 at 09:50:38AM +0800, luanshi wrote:
>> 2021/11/19 20:00, Lukas Wunner:
>>> Please open a bug on bugzilla.kernel.org and attach full output
>>> of lspci -vv and dmesg. Be sure to add the following to the
>>> command line:
>>> pciehp.pciehp_debug=1 dyndbg="file pciehp* +p"
>>>
>>> Once you've done that, please report the bugzilla link here
>>> so that we can analyze the issue properly.
> I really need you to perform the above steps in order to analyze
> what's going on here.
>
> Again, if you get such timeout messages, it's usually not caused
> by a bug in the driver but by an erratum in the hardware,
> i.e. the hardware neglected to signal Command Completed in response
> to a Slot Control register write.
>
> Thanks,
>
> Lukas

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