linux-kernel - [tip:irq/urgent 1/1] drivers/pci/msi/msi.c:763:18: error: use of undeclared identifier 'nvec'; did you mean 'nvev'?

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Date:   Sun, 16 Apr 2023 08:04:17 +0800
From:   kernel test robot <lkp@...el.com>
To:     Thomas Gleixner <tglx@...utronix.de>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, x86@...nel.org
Subject: [tip:irq/urgent 1/1] drivers/pci/msi/msi.c:763:18: error: use of
 undeclared identifier 'nvec'; did you mean 'nvev'?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/urgent
head:   84d9651e13fb9820041d19262a55906851524c0f
commit: 84d9651e13fb9820041d19262a55906851524c0f [1/1] PCI/MSI: Remove over-zealous hardware size check in pci_msix_validate_entries()
config: x86_64-randconfig-a012 (https://download.01.org/0day-ci/archive/20230416/202304160832.bMSgCZQD-lkp@intel.com/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?id=84d9651e13fb9820041d19262a55906851524c0f
        git remote add tip https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git
        git fetch --no-tags tip irq/urgent
        git checkout 84d9651e13fb9820041d19262a55906851524c0f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/pci/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202304160832.bMSgCZQD-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/pci/msi/msi.c:763:18: error: use of undeclared identifier 'nvec'; did you mean 'nvev'?
           for (i = 0; i < nvec; i++) {
                           ^~~~
                           nvev
   drivers/pci/msi/msi.c:753:92: note: 'nvev' declared here
   static bool pci_msix_validate_entries(struct pci_dev *dev, struct msix_entry *entries, int nvev)
                                                                                              ^
   drivers/pci/msi/msi.c:765:23: error: use of undeclared identifier 'nvec'; did you mean 'nvev'?
                   for (j = i + 1; j < nvec; j++) {
                                       ^~~~
                                       nvev
   drivers/pci/msi/msi.c:753:92: note: 'nvev' declared here
   static bool pci_msix_validate_entries(struct pci_dev *dev, struct msix_entry *entries, int nvev)
                                                                                              ^
   2 errors generated.


vim +763 drivers/pci/msi/msi.c

^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16  752  
84d9651e13fb98 drivers/pci/msi/msi.c Thomas Gleixner   2023-04-10  753  static bool pci_msix_validate_entries(struct pci_dev *dev, struct msix_entry *entries, int nvev)
^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16  754  {
4644d22eb673f1 drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  755  	bool nogap;
ded86d8d37736d drivers/pci/msi.c     Eric W. Biederman 2007-01-28  756  	int i, j;
^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16  757  
bab65e48cb064d drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  758  	if (!entries)
bab65e48cb064d drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  759  		return true;
^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16  760  
4644d22eb673f1 drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  761  	nogap = pci_msi_domain_supports(dev, MSI_FLAG_MSIX_CONTIGUOUS, DENY_LEGACY);
4644d22eb673f1 drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  762  
^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16 @763  	for (i = 0; i < nvec; i++) {
bab65e48cb064d drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  764  		/* Check for duplicate entries */
^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16  765  		for (j = i + 1; j < nvec; j++) {
^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16  766  			if (entries[i].entry == entries[j].entry)
bab65e48cb064d drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  767  				return false;
^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16  768  		}
4644d22eb673f1 drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  769  		/* Check for unsupported gaps */
4644d22eb673f1 drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  770  		if (nogap && entries[i].entry != i)
4644d22eb673f1 drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  771  			return false;
^1da177e4c3f41 drivers/pci/msi.c     Linus Torvalds    2005-04-16  772  	}
bab65e48cb064d drivers/pci/msi/msi.c Thomas Gleixner   2022-11-11  773  	return true;
3ac020e0ca8bef drivers/pci/msi.c     Christoph Hellwig 2016-07-12  774  }
7bd007e480672c drivers/pci/msi.c     Eric W. Biederman 2006-10-04  775  

:::::: The code at line 763 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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