Re: [PATCH RESEND 1/1] PCI: pciehp: fix concurrent sub-tree removal deadlock

[kernel test robot <lkp@intel.com>]

Hi Keith,

kernel test robot noticed the following build errors:

[auto build test ERROR on pci/next]
[also build test ERROR on pci/for-linus linus/master v6.18-rc1 next-20251016]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Keith-Busch/PCI-pciehp-fix-concurrent-sub-tree-removal-deadlock/20251017-033133
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20251016193049.881212-2-kbusch%40meta.com
patch subject: [PATCH RESEND 1/1] PCI: pciehp: fix concurrent sub-tree removal deadlock
config: arm-allnoconfig (https://download.01.org/0day-ci/archive/20251017/202510171720.AKF8sDMd-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 754ebc6ebb9fb9fbee7aef33478c74ea74949853)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251017/202510171720.AKF8sDMd-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510171720.AKF8sDMd-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/pci/of.c:18:
>> drivers/pci/pci.h:653:2: error: call to undeclared function 'pci_notify_disconnected'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     653 |         pci_notify_disconnected();
         |         ^
   drivers/pci/pci.h:653:2: note: did you mean 'pci_doe_disconnected'?
   drivers/pci/pci.h:597:20: note: 'pci_doe_disconnected' declared here
     597 | static inline void pci_doe_disconnected(struct pci_dev *pdev) { }
         |                    ^
   1 error generated.


vim +/pci_notify_disconnected +653 drivers/pci/pci.h

   648	
   649	static inline int pci_dev_set_disconnected(struct pci_dev *dev, void *unused)
   650	{
   651		pci_dev_set_io_state(dev, pci_channel_io_perm_failure);
   652		pci_doe_disconnected(dev);
 > 653		pci_notify_disconnected();
   654	
   655		return 0;
   656	}
   657	

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