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From: kbuild test robot <lkp@intel.com>
To: Yongji Xie <xyjxie@linux.vnet.ibm.com>
Cc: kbuild-all@01.org, bhelgaas@google.com, zhong@linux.vnet.ibm.com,
	aik@ozlabs.ru, linux-pci@vger.kernel.org,
	gwshan@linux.vnet.ibm.com, alex.williamson@redhat.com,
	paulus@samba.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH v8 2/3] PCI: Make sure the driver could get correct BAR size from pci_resource_len()
Date: Sat, 21 Jan 2017 03:53:11 +0800	[thread overview]
Message-ID: <201701210327.c1ultHEI%fengguang.wu@intel.com> (raw)
In-Reply-To: <1484898113-24939-3-git-send-email-xyjxie@linux.vnet.ibm.com>

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Hi Yongji,

[auto build test WARNING on pci/next]
[also build test WARNING on v4.10-rc4 next-20170120]
[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/Yongji-Xie/PCI-Ignore-requested-alignment-for-IOV-BARs/20170121-031322
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: i386-defconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from drivers/ata/ata_piix.c:88:0:
   drivers/ata/ata_piix.c: In function 'piix_init_sidpr':
>> include/linux/pci.h:1648:44: warning: comparison between 'enum <anonymous>' and 'enum <anonymous>' [-Wenum-compare]
    #define pci_resource_end(dev, bar) (((bar) > PCI_ROM_RESOURCE) ? \
                                               ^
>> include/linux/pci.h:1655:4: note: in expansion of macro 'pci_resource_end'
       pci_resource_end((dev), (bar)) ==  \
       ^~~~~~~~~~~~~~~~
>> drivers/ata/ata_piix.c:1471:6: note: in expansion of macro 'pci_resource_len'
         pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
         ^~~~~~~~~~~~~~~~
>> include/linux/pci.h:1648:44: warning: comparison between 'enum <anonymous>' and 'enum <anonymous>' [-Wenum-compare]
    #define pci_resource_end(dev, bar) (((bar) > PCI_ROM_RESOURCE) ? \
                                               ^
   include/linux/pci.h:1658:4: note: in expansion of macro 'pci_resource_end'
      (pci_resource_end((dev), (bar)) -  \
       ^~~~~~~~~~~~~~~~
>> drivers/ata/ata_piix.c:1471:6: note: in expansion of macro 'pci_resource_len'
         pci_resource_len(pdev, PIIX_SIDPR_BAR) != PIIX_SIDPR_LEN)
         ^~~~~~~~~~~~~~~~

vim +1648 include/linux/pci.h

  1642	#define pci_root_bus_fwnode(bus)	NULL
  1643	#endif
  1644	
  1645	/* these helpers provide future and backwards compatibility
  1646	 * for accessing popular PCI BAR info */
  1647	#define pci_resource_start(dev, bar)	((dev)->resource[(bar)].start)
> 1648	#define pci_resource_end(dev, bar)	(((bar) > PCI_ROM_RESOURCE) ?	\
  1649						(dev)->resource[(bar)].end :	\
  1650						((dev)->resource[(bar)].end -	\
  1651						(dev)->res_addsize[(bar)]))
  1652	#define pci_resource_flags(dev, bar)	((dev)->resource[(bar)].flags)
  1653	#define pci_resource_len(dev,bar) \
  1654		((pci_resource_start((dev), (bar)) == 0 &&	\
> 1655		  pci_resource_end((dev), (bar)) ==		\
  1656		  pci_resource_start((dev), (bar))) ? 0 :	\
  1657								\
  1658		 (pci_resource_end((dev), (bar)) -		\

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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  reply	other threads:[~2017-01-20 19:53 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-20  7:41 [PATCH v8 0/3] PCI: Introduce a way to enforce all MMIO BARs not to share PAGE_SIZE Yongji Xie
2017-01-20  7:41 ` [PATCH v8 1/3] PCI: Ignore requested alignment for IOV BARs Yongji Xie
2017-01-20  7:41 ` [PATCH v8 2/3] PCI: Make sure the driver could get correct BAR size from pci_resource_len() Yongji Xie
2017-01-20 19:53   ` kbuild test robot [this message]
2017-01-20 20:41   ` kbuild test robot
2017-01-20  7:41 ` [PATCH v8 3/3] PCI: Add a macro to set default alignment for all PCI devices Yongji Xie

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