Re: [PATCH 3/3] pci/msi: remove pci_msi_ignore_mask

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

Hi Roger,

kernel test robot noticed the following build errors:

[auto build test ERROR on pci/next]
[also build test ERROR on pci/for-linus xen-tip/linux-next tip/irq/core linus/master v6.13-rc6 next-20250110]
[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#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Roger-Pau-Monne/xen-pci-do-not-register-devices-outside-of-PCI-segment-scope/20250110-220331
base:   https://git.kernel.org/pub/scm/linux/kernel/git/pci/pci.git next
patch link:    https://lore.kernel.org/r/20250110140152.27624-4-roger.pau%40citrix.com
patch subject: [PATCH 3/3] pci/msi: remove pci_msi_ignore_mask
config: arm64-randconfig-003-20250111 (https://download.01.org/0day-ci/archive/20250111/202501111839.HXJGe5FL-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250111/202501111839.HXJGe5FL-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501111839.HXJGe5FL-lkp@intel.com/

All errors (new ones prefixed by >>):

>> drivers/pci/msi/msi.c:288:40: error: incomplete definition of type 'struct irq_domain'
     288 |         const struct msi_domain_info *info = d->host_data;
         |                                              ~^
   include/linux/irq.h:130:8: note: forward declaration of 'struct irq_domain'
     130 | struct irq_domain;
         |        ^
   drivers/pci/msi/msi.c:604:40: error: incomplete definition of type 'struct irq_domain'
     604 |         const struct msi_domain_info *info = d->host_data;
         |                                              ~^
   include/linux/irq.h:130:8: note: forward declaration of 'struct irq_domain'
     130 | struct irq_domain;
         |        ^
   drivers/pci/msi/msi.c:714:40: error: incomplete definition of type 'struct irq_domain'
     714 |         const struct msi_domain_info *info = d->host_data;
         |                                              ~^
   include/linux/irq.h:130:8: note: forward declaration of 'struct irq_domain'
     130 | struct irq_domain;
         |        ^
   3 errors generated.


vim +288 drivers/pci/msi/msi.c

   283	
   284	static int msi_setup_msi_desc(struct pci_dev *dev, int nvec,
   285				      struct irq_affinity_desc *masks)
   286	{
   287		const struct irq_domain *d = dev_get_msi_domain(&dev->dev);
 > 288		const struct msi_domain_info *info = d->host_data;
   289		struct msi_desc desc;
   290		u16 control;
   291	
   292		/* MSI Entry Initialization */
   293		memset(&desc, 0, sizeof(desc));
   294	
   295		pci_read_config_word(dev, dev->msi_cap + PCI_MSI_FLAGS, &control);
   296		/* Lies, damned lies, and MSIs */
   297		if (dev->dev_flags & PCI_DEV_FLAGS_HAS_MSI_MASKING)
   298			control |= PCI_MSI_FLAGS_MASKBIT;
   299		if (info->flags & MSI_FLAG_NO_MASK)
   300			control &= ~PCI_MSI_FLAGS_MASKBIT;
   301	
   302		desc.nvec_used			= nvec;
   303		desc.pci.msi_attrib.is_64	= !!(control & PCI_MSI_FLAGS_64BIT);
   304		desc.pci.msi_attrib.can_mask	= !!(control & PCI_MSI_FLAGS_MASKBIT);
   305		desc.pci.msi_attrib.default_irq	= dev->irq;
   306		desc.pci.msi_attrib.multi_cap	= FIELD_GET(PCI_MSI_FLAGS_QMASK, control);
   307		desc.pci.msi_attrib.multiple	= ilog2(__roundup_pow_of_two(nvec));
   308		desc.affinity			= masks;
   309	
   310		if (control & PCI_MSI_FLAGS_64BIT)
   311			desc.pci.mask_pos = dev->msi_cap + PCI_MSI_MASK_64;
   312		else
   313			desc.pci.mask_pos = dev->msi_cap + PCI_MSI_MASK_32;
   314	
   315		/* Save the initial mask status */
   316		if (desc.pci.msi_attrib.can_mask)
   317			pci_read_config_dword(dev, desc.pci.mask_pos, &desc.pci.msi_mask);
   318	
   319		return msi_insert_msi_desc(&dev->dev, &desc);
   320	}
   321	

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