Re: linux-next: Tree for Jul 30 (pci/controller/cadence/)

[Randy Dunlap <rdunlap@infradead.org>]

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On 7/31/26 2:41 PM, Bjorn Helgaas wrote:
> On Thu, Jul 30, 2026 at 07:27:42PM -0500, Bjorn Helgaas wrote:
>> [+cc authors of everything on pci/controller/cadence; I haven't
>> triaged this at all, sorry, and don't have time right now to drop that
>> branch from pci/next]
>>
>> On Thu, Jul 30, 2026 at 04:06:44PM -0700, Randy Dunlap wrote:
>>>
>>>
>>> On 7/30/26 8:02 AM, Mark Brown wrote:
>>>> Hi all,
>>>>
>>>> Changes since 20260729:
>>>>
>>>
>>> (1) /usr/bin/ld.bfd: drivers/pci/controller/cadence/pcie-cadence-plat.o: in function `cdns_plat_pcie_probe':
>>> pcie-cadence-plat.c:(.text+0x2f8): undefined reference to `cdns_pcie_ep_setup'
>>>
>>> In this case, a builtin driver attempts to call into a loadable module:
>>>
>>> #
>>> # Cadence-based PCIe controllers
>>> #
>>> CONFIG_PCIE_CADENCE=y
>>> # CONFIG_PCIE_CADENCE_DEBUGFS is not set
>>> CONFIG_PCIE_CADENCE_HOST=y
>>> CONFIG_PCIE_CADENCE_EP=m
>>> CONFIG_PCIE_CADENCE_PLAT=y
>>> CONFIG_PCIE_CADENCE_PLAT_HOST=y
>>> CONFIG_PCIE_CADENCE_PLAT_EP=m
>>> # end of Cadence-based PCIe controllers
> 
> I was unable to reproduce this issue, so I didn't do anything.  I
> didn't figure out how to make CONFIG_PCIE_CADENCE_EP=m; the config I
> used was:
> 
>   CONFIG_PCIE_CADENCE=y
>   # CONFIG_PCIE_CADENCE_DEBUGFS is not set
>   CONFIG_PCIE_CADENCE_HOST=y
>   CONFIG_PCIE_CADENCE_EP=y
>   CONFIG_PCIE_CADENCE_PLAT=y
>   CONFIG_PCIE_CADENCE_PLAT_HOST=y
>   CONFIG_PCIE_CADENCE_PLAT_EP=m
> 
>>> (2) /usr/bin/ld.bfd: drivers/pci/controller/cadence/pcie-cadence-plat.o: in function `cdns_plat_pcie_probe':
>>> pcie-cadence-plat.c:(.text+0x11f): undefined reference to `cdns_pcie_host_setup'
>>>
>>>
>>> This is similar, just a different driver is =m in the failure case.
>>>
>>> #
>>> # Cadence-based PCIe controllers
>>> #
>>> CONFIG_PCIE_CADENCE=y
>>> CONFIG_PCIE_CADENCE_DEBUGFS=y
>>> CONFIG_PCIE_CADENCE_HOST=m
>>> CONFIG_PCIE_CADENCE_EP=y
>>> CONFIG_PCIE_CADENCE_PLAT=y
>>> CONFIG_PCIE_CADENCE_PLAT_HOST=m
>>> CONFIG_PCIE_CADENCE_PLAT_EP=y

I have reproduced it several times in cases that were
generated by 'make randconfig'.
I am attaching the 2 failing randconfig files (both for x86_64
and linux-next).

-- 
~Randy

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