Re: [RFC PATCH 3/4] NTB: EPF: support NTB transfer between PCI RC and EP connection

[kernel test robot <lkp@intel.com>]

Hi Frank,

[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on helgaas-pci/next]
[also build test WARNING on jonmason-ntb/ntb-next v5.17-rc4 next-20220215]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Frank-Li/NTB-function-for-PCIe-RC-to-EP-connection/20220215-134115
base:   https://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git next
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20220216/202202161525.BBBVV79O-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0e628a783b935c70c80815db6c061ec84f884af5)
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/0day-ci/linux/commit/84bf6254010435435a8c196e30bb2d25fd22763c
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Frank-Li/NTB-function-for-PCIe-RC-to-EP-connection/20220215-134115
        git checkout 84bf6254010435435a8c196e30bb2d25fd22763c
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/gpu/drm/i915/gvt/ drivers/media/i2c/ drivers/pci/endpoint/functions/ kernel/bpf/

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

All warnings (new ones prefixed by >>):

>> drivers/pci/endpoint/functions/pci-epf-vntb.c:975:5: warning: no previous prototype for function 'pci_read' [-Wmissing-prototypes]
   int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val)
       ^
   drivers/pci/endpoint/functions/pci-epf-vntb.c:975:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val)
   ^
   static 
>> drivers/pci/endpoint/functions/pci-epf-vntb.c:984:5: warning: no previous prototype for function 'pci_write' [-Wmissing-prototypes]
   int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val)
       ^
   drivers/pci/endpoint/functions/pci-epf-vntb.c:984:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val)
   ^
   static 
   2 warnings generated.


vim +/pci_read +975 drivers/pci/endpoint/functions/pci-epf-vntb.c

   974	
 > 975	int pci_read(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 *val)
   976	{
   977		if (devfn == 0) {
   978			memcpy(val, ((uint8_t *)pci_space) + where, size);
   979			return 0;
   980		}
   981		return -1;
   982	}
   983	
 > 984	int pci_write(struct pci_bus *bus, unsigned int devfn, int where, int size, u32 val)
   985	{
   986		return 0;
   987	}
   988	

---
0-DAY CI Kernel Test Service, Intel Corporation
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