Re: [PATCH] PCI: pciehp: clear cmd_busy bit when Command Completed in polling mode

[luanshi]

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