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Message-ID: <202310171955.hlish6FZ-lkp@intel.com>
Date:   Thu, 19 Oct 2023 09:06:10 +0800
From:   kernel test robot <yujie.liu@...el.com>
To:     Kai-Heng Feng <kai.heng.feng@...onical.com>, <bhelgaas@...gle.com>
CC:     <oe-kbuild-all@...ts.linux.dev>, <linux-pm@...r.kernel.org>,
        <linux-mmc@...r.kernel.org>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Ricky Wu <ricky_wu@...ltek.com>,
        Kees Cook <keescook@...omium.org>,
        Tony Luck <tony.luck@...el.com>,
        "Guilherme G. Piccoli" <gpiccoli@...lia.com>,
        "Lukas Wunner" <lukas@...ner.de>, <linux-pci@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-hardening@...r.kernel.org>,
        <bpf@...r.kernel.org>
Subject: Re: [PATCH] PCI: pciehp: Prevent child devices from doing RPM on
 PCIe Link Down

Hi Kai-Heng,

kernel test robot noticed the following build warnings:

[auto build test WARNING on pci/next]
[also build test WARNING on pci/for-linus linus/master v6.6-rc6 next-20231017]
[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/Kai-Heng-Feng/PCI-pciehp-Prevent-child-devices-from-doing-RPM-on-PCIe-Link-Down/20231017-142208
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20231016040132.23824-1-kai.heng.feng%40canonical.com
patch subject: [PATCH] PCI: pciehp: Prevent child devices from doing RPM on PCIe Link Down
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20231017/202310171955.hlish6FZ-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231017/202310171955.hlish6FZ-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 <yujie.liu@...el.com>
| Closes: https://lore.kernel.org/r/202310171955.hlish6FZ-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/pci/hotplug/pciehp_pci.c:25:5: warning: no previous prototype for 'pci_dev_disconnect' [-Wmissing-prototypes]
      25 | int pci_dev_disconnect(struct pci_dev *pdev, void *unused)
         |     ^~~~~~~~~~~~~~~~~~


vim +/pci_dev_disconnect +25 drivers/pci/hotplug/pciehp_pci.c

^1da177e4c3f41 Linus Torvalds 2005-04-16  24  
2bd1cb5c4e6711 Kai-Heng Feng  2023-10-16 @25  int pci_dev_disconnect(struct pci_dev *pdev, void *unused)
2bd1cb5c4e6711 Kai-Heng Feng  2023-10-16  26  {
2bd1cb5c4e6711 Kai-Heng Feng  2023-10-16  27  	pm_runtime_barrier(&pdev->dev);
2bd1cb5c4e6711 Kai-Heng Feng  2023-10-16  28  	pci_dev_set_disconnected(pdev, NULL);
2bd1cb5c4e6711 Kai-Heng Feng  2023-10-16  29  
2bd1cb5c4e6711 Kai-Heng Feng  2023-10-16  30  	return 0;
2bd1cb5c4e6711 Kai-Heng Feng  2023-10-16  31  }
2bd1cb5c4e6711 Kai-Heng Feng  2023-10-16  32  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

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