linux-kernel - [meghadey-crypto:d_msix 1/1] include/linux/pci.h:1525:5: warning: no previous prototype for function 'pci_add_msix_irq

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Date:   Fri, 27 Aug 2021 13:54:57 +0800
From:   kernel test robot <lkp@...el.com>
To:     Megha Dey <megha.dey@...el.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [meghadey-crypto:d_msix 1/1] include/linux/pci.h:1525:5: warning: no
 previous prototype for function 'pci_add_msix_irq_vectors'

tree:   https://github.com/meghadey/crypto d_msix
head:   fe0d346f093182500992e4d7d25b4ebff5de49b1
commit: fe0d346f093182500992e4d7d25b4ebff5de49b1 [1/1] PCI/MSI: Dynamic allocation of MSI-X vectors
config: i386-buildonly-randconfig-r004-20210827 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 1076082a0d97bd5c16a25ee7cf3dbb6ee4b5a9fe)
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://github.com/meghadey/crypto/commit/fe0d346f093182500992e4d7d25b4ebff5de49b1
        git remote add meghadey-crypto https://github.com/meghadey/crypto
        git fetch --no-tags meghadey-crypto d_msix
        git checkout fe0d346f093182500992e4d7d25b4ebff5de49b1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

   In file included from arch/x86/video/fbdev.c:10:
>> include/linux/pci.h:1525:5: warning: no previous prototype for function 'pci_add_msix_irq_vectors' [-Wmissing-prototypes]
   int pci_add_msix_irq_vectors(struct pci_dev *dev, int minvec, int maxvec)
       ^
   include/linux/pci.h:1525:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int pci_add_msix_irq_vectors(struct pci_dev *dev, int minvec, int maxvec)
   ^
   static 
   arch/x86/video/fbdev.c:14:5: warning: no previous prototype for function 'fb_is_primary_device' [-Wmissing-prototypes]
   int fb_is_primary_device(struct fb_info *info)
       ^
   arch/x86/video/fbdev.c:14:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int fb_is_primary_device(struct fb_info *info)
   ^
   static 
   2 warnings generated.


vim +/pci_add_msix_irq_vectors +1525 include/linux/pci.h

  1509	
  1510	#else
  1511	static inline int pci_msi_vec_count(struct pci_dev *dev) { return -ENOSYS; }
  1512	static inline void pci_disable_msi(struct pci_dev *dev) { }
  1513	static inline int pci_msix_vec_count(struct pci_dev *dev) { return -ENOSYS; }
  1514	static inline void pci_disable_msix(struct pci_dev *dev) { }
  1515	static inline void pci_restore_msi_state(struct pci_dev *dev) { }
  1516	static inline int pci_msi_enabled(void) { return 0; }
  1517	static inline int pci_enable_msi(struct pci_dev *dev)
  1518	{ return -ENOSYS; }
  1519	static inline int pci_enable_msix_range(struct pci_dev *dev,
  1520				struct msix_entry *entries, int minvec, int maxvec)
  1521	{ return -ENOSYS; }
  1522	static inline int pci_enable_msix_exact(struct pci_dev *dev,
  1523				struct msix_entry *entries, int nvec)
  1524	{ return -ENOSYS; }
> 1525	int pci_add_msix_irq_vectors(struct pci_dev *dev, int minvec, int maxvec)
  1526	{ return -ENOSYS; }
  1527	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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