linux-kernel - Re: arc-linux-ld: drivers/pci/controller/cadence/pci-j721e.c:648: undefined reference to `cdns_pcie_host

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Message-ID: <61e84e12966ea0259961eca5a25c302c62acc9d9.camel@ti.com>
Date: Tue, 20 Jan 2026 10:02:35 +0530
From: Siddharth Vadapalli <s-vadapalli@...com>
To: Chen Wang <unicorn_wang@...look.com>, kernel test robot <lkp@...el.com>,
	Vignesh Raghavendra <vigneshr@...com>
CC: <oe-kbuild-all@...ts.linux.dev>, <linux-kernel@...r.kernel.org>,
	Manivannan Sadhasivam <mani@...nel.org>, <s-vadapalli@...com>
Subject: Re: arc-linux-ld: drivers/pci/controller/cadence/pci-j721e.c:648:
 undefined reference to `cdns_pcie_host_disable'

On Tue, 2026-01-20 at 08:45 +0800, Chen Wang wrote:
> On 1/19/2026 10:00 PM, kernel test robot wrote:
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
> > commit: 1c72774df028429836eec3394212f2921bb830fc PCI: sg2042: Add Sophgo SG2042 PCIe driver
> > date:   4 months ago
> > config: arc-randconfig-002-20260119 (https://download.01.org/0day-ci/archive/20260119/202601192149.m9qDmfLW-lkp@intel.com/config)
> > compiler: arc-linux-gcc (GCC) 8.5.0
> > reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260119/202601192149.m9qDmfLW-lkp@intel.com/reproduce)
> > 
> > If you fix the issue in a separate patch/commit (i.e. not just a new version of
> > the same patch/commit), kindly add following tags
> > > Reported-by: kernel test robot <lkp@...el.com>
> > > Closes: https://lore.kernel.org/oe-kbuild-all/202601192149.m9qDmfLW-lkp@intel.com/
> > 
> > All errors (new ones prefixed by >>):
> > 
> >     arc-linux-ld: drivers/pci/controller/cadence/pci-j721e.o: in function `j721e_pcie_remove':
> >     drivers/pci/controller/cadence/pci-j721e.c:648: undefined reference to `cdns_pcie_host_disable'
> > > > arc-linux-ld: drivers/pci/controller/cadence/pci-j721e.c:648: undefined reference to `cdns_pcie_host_disable'
> 
> This appears to be a configuration-related issue. 
> "CONFIG_PCIE_CADENCE_HOST=m" but "CONFIG_PCI_J721E=y".
> 
> I don't think this issue is related to sophgo drivers.
> 
> Adding Vignesh and Siddharth who might be interested in this.

Please refer:
https://lore.kernel.org/r/20251117113246.1460644-1-s-vadapalli@ti.com/

Regards,
Siddharth.