[efi:next 16/20] arch/arm/include/asm/efi.h:53:32: warning: 'pci_handle' is used uninitialized in this function

[efi:next 16/20] arch/arm/include/asm/efi.h:53:32: warning: 'pci_handle' is used uninitialized in this function

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/efi/efi.git next
head:   d6e40eca3ddb5408148b8875e18dd54384aaa796
commit: 4e3a2778404ecb47665318addc8092f5b749efb4 [16/20] efi: Allow disabling PCI busmastering on bridges during boot
config: arm-multi_v7_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 4e3a2778404ecb47665318addc8092f5b749efb4
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=arm 

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

All warnings (new ones prefixed by >>):

   In file included from drivers/firmware/efi/libstub/pci.c:12:0:
   drivers/firmware/efi/libstub/pci.c: In function 'efi_pci_disable_bridge_busmaster':
>> arch/arm/include/asm/efi.h:53:32: warning: 'pci_handle' is used uninitialized in this function [-Wuninitialized]
    #define efi_bs_call(func, ...) efi_system_table()->boottime->func(__VA_ARGS__)
                                   ^~~~~~~~~~~~~~~~
--
   In file included from drivers/firmware//efi/libstub/pci.c:12:0:
   drivers/firmware//efi/libstub/pci.c: In function 'efi_pci_disable_bridge_busmaster':
>> arch/arm/include/asm/efi.h:53:32: warning: 'pci_handle' is used uninitialized in this function [-Wuninitialized]
    #define efi_bs_call(func, ...) efi_system_table()->boottime->func(__VA_ARGS__)
                                   ^~~~~~~~~~~~~~~~

vim +/pci_handle +53 arch/arm/include/asm/efi.h

81a0bc39ea1960 Roy Franz      2015-09-23  52  
966291f6344d7e Ard Biesheuvel 2019-12-24 @53  #define efi_bs_call(func, ...)	efi_system_table()->boottime->func(__VA_ARGS__)
966291f6344d7e Ard Biesheuvel 2019-12-24  54  #define efi_rt_call(func, ...)	efi_system_table()->runtime->func(__VA_ARGS__)
f958efe9759683 Ard Biesheuvel 2019-12-24  55  #define efi_is_native()		(true)
81a0bc39ea1960 Roy Franz      2015-09-23  56  

:::::: The code at line 53 was first introduced by commit
:::::: 966291f6344d7eb6fc3204381a426bafa20a3d18 efi/libstub: Rename efi_call_early/_runtime macros to be more intuitive

:::::: TO: Ard Biesheuvel <ardb@kernel.org>
:::::: CC: Ingo Molnar <mingo@kernel.org>

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

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