linux-kernel - Re: [PATCH 2/4] PCI/DPC/AER: Address Concurrency between AER and DPC

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Message-ID: <201712290156.67Rl47qH%fengguang.wu@intel.com>
Date:   Fri, 29 Dec 2017 02:07:51 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Oza Pawandeep <poza@...eaurora.org>
Cc:     kbuild-all@...org, Bjorn Helgaas <bhelgaas@...gle.com>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
        Dongdong Liu <liudongdong3@...wei.com>,
        Gabriele Paoloni <gabriele.paoloni@...wei.com>,
        Keith Busch <keith.busch@...el.com>, Wei Zhang <wzhang@...com>,
        Sinan Kaya <okaya@...eaurora.org>,
        Timur Tabi <timur@...eaurora.org>,
        Oza Pawandeep <poza@...eaurora.org>
Subject: Re: [PATCH 2/4] PCI/DPC/AER: Address Concurrency between AER and DPC

Hi Oza,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.15-rc5]
[cannot apply to pci/next pm/linux-next next-20171222]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Oza-Pawandeep/Address-error-and-recovery-for-AER-and-DPC/20171228-222058
config: x86_64-randconfig-r0-12282251 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/pci/pcie/pcie-err.o: In function `pci_reset_link':
>> drivers/pci/pcie/pcie-err.c:195: undefined reference to `pci_find_dpc_service'

vim +195 drivers/pci/pcie/pcie-err.c

   178	
   179	pci_ers_result_t pci_reset_link(struct pci_dev *dev, int severity)
   180	{
   181		struct pci_dev *udev;
   182		pci_ers_result_t status;
   183		struct pcie_port_service_driver *driver;
   184	
   185		if (dev->hdr_type == PCI_HEADER_TYPE_BRIDGE) {
   186			/* Reset this port for all subordinates */
   187			udev = dev;
   188		} else {
   189			/* Reset the upstream component (likely downstream port) */
   190			udev = dev->bus->self;
   191		}
   192	
   193		/* Use the aer driver of the component firstly */
   194		if (severity == PCI_ERR_DPC_FATAL)
 > 195			driver = pci_find_dpc_service(udev);
   196		else
   197			driver = pci_find_aer_service(udev);
   198	
   199		if (driver && driver->reset_link) {
   200			status = driver->reset_link(udev);
   201		} else if (udev->has_secondary_link) {
   202			status = pci_default_reset_link(udev);
   203		} else {
   204			dev_printk(KERN_DEBUG, &dev->dev,
   205				"no link-reset support at upstream device %s\n",
   206				pci_name(udev));
   207			return PCI_ERS_RESULT_DISCONNECT;
   208		}
   209	
   210		if (status != PCI_ERS_RESULT_RECOVERED) {
   211			dev_printk(KERN_DEBUG, &dev->dev,
   212				"link reset at upstream device %s failed\n",
   213				pci_name(udev));
   214			return PCI_ERS_RESULT_DISCONNECT;
   215		}
   216	
   217		return status;
   218	}
   219	

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0-DAY kernel test infrastructure                Open Source Technology Center
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