Re: [vfio:next 33/38] drivers/gpu/drm/i915/i915_pci.c:975:2: warning: missing field 'override_only' initializer

[Jason Gunthorpe <jgg@nvidia.com>]

On Fri, Aug 27, 2021 at 03:12:36PM +0000, kernel test robot wrote:
> tree:   https://github.com/awilliam/linux-vfio.git next
> head:   ea870730d83fc13a5fa2bd0e175176d7ac8a400a
> commit: 343b7258687ecfbb363bfda8833a7cf641aac524 [33/38] PCI: Add 'override_only' field to struct pci_device_id
> config: i386-randconfig-a004-20210827 (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/awilliam/linux-vfio/commit/343b7258687ecfbb363bfda8833a7cf641aac524
>         git remote add vfio https://github.com/awilliam/linux-vfio.git
>         git fetch --no-tags vfio next
>         git checkout 343b7258687ecfbb363bfda8833a7cf641aac524
>         # 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@intel.com>

Ugh, this is due to this code:

#define INTEL_VGA_DEVICE(id, info) {		\
	0x8086,	id,				\
	~0, ~0,					\
	0x030000, 0xff0000,			\
	(unsigned long) info }

#define INTEL_QUANTA_VGA_DEVICE(info) {		\
	0x8086,	0x16a,				\
	0x152d,	0x8990,				\
	0x030000, 0xff0000,			\
	(unsigned long) info }


Which really should be using the normal pattern for defining these
structs:

#define PCI_DEVICE_CLASS(dev_class,dev_class_mask) \
        .class = (dev_class), .class_mask = (dev_class_mask), \
        .vendor = PCI_ANY_ID, .device = PCI_ANY_ID, \
        .subvendor = PCI_ANY_ID, .subdevice = PCI_ANY_ID

The warning is also not a real issue, just clang being overzealous.

Jason