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

[Bjorn Helgaas <helgaas@kernel.org>]

[+cc recent committers in drivers/pci/controller/cadence/]

On Fri, Jul 31, 2026 at 05:12:03PM -0700, Randy Dunlap wrote:
> 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]

Thanks, Randy, I reproduced this problem on v7.1 in an x86_64 build
with the config-r1495.gz you posted at
https://lore.kernel.org/all/b99bef0f-7694-4aff-949e-d289d8ddb10e@infradead.org

Per MAINTAINERS, drivers/pci/controller/cadence/ is orphaned.  If
anybody cares about this, please take a look and fix this issue.

> >> 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