linux-kernel - Re: [PATCH v2] PCI/AER: Do not clear AER bits if we don't own AER

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Date:   Wed, 25 Jul 2018 09:03:41 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Alexandru Gagniuc <mr.nuke.me@...il.com>
Cc:     kbuild-all@...org, linux-pci@...r.kernel.org, bhelgaas@...gle.com,
        keith.busch@...el.com, alex_gagniuc@...lteam.com,
        austin_bolen@...l.com, shyam_iyer@...l.com,
        Alexandru Gagniuc <mr.nuke.me@...il.com>,
        Frederick Lawler <fred@...dlawl.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Oza Pawandeep <poza@...eaurora.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] PCI/AER: Do not clear AER bits if we don't own AER

Hi Alexandru,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on pci/next]
[also build test ERROR on v4.18-rc6 next-20180724]
[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/Alexandru-Gagniuc/PCI-AER-Do-not-clear-AER-bits-if-we-don-t-own-AER/20180724-235320
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: x86_64-randconfig-s1-07250001 (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/aer.c: In function 'pci_enable_pcie_error_reporting':
>> drivers/pci/pcie/aer.c:371:7: error: implicit declaration of function 'pcie_aer_is_kernel_first' [-Werror=implicit-function-declaration]
     if (!pcie_aer_is_kernel_first(dev))
          ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/pcie_aer_is_kernel_first +371 drivers/pci/pcie/aer.c

   365	
   366	#define	PCI_EXP_AER_FLAGS	(PCI_EXP_DEVCTL_CERE | PCI_EXP_DEVCTL_NFERE | \
   367					 PCI_EXP_DEVCTL_FERE | PCI_EXP_DEVCTL_URRE)
   368	
   369	int pci_enable_pcie_error_reporting(struct pci_dev *dev)
   370	{
 > 371		if (!pcie_aer_is_kernel_first(dev))
   372			return -EIO;
   373	
   374		return pcie_capability_set_word(dev, PCI_EXP_DEVCTL, PCI_EXP_AER_FLAGS);
   375	}
   376	EXPORT_SYMBOL_GPL(pci_enable_pcie_error_reporting);
   377	

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