[asahilinux:bits/140-pci 9/18] drivers/pci/controller/pcie-apple.c:468:19: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations

[asahilinux:bits/140-pci 9/18] drivers/pci/controller/pcie-apple.c:468:19: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations

[kernel test robot]

tree:   https://github.com/AsahiLinux/linux bits/140-pci
head:   c24f6a9c03023a15361d83d33b7c8320b84adb2b
commit: fb2de8b4d47a54cd57e50cc6afa03383fa6ced8a [9/18] PCIE: apple: Add T602x PCIe support
config: powerpc64-randconfig-003-20241006 (https://download.01.org/0day-ci/archive/20241007/202410070721.j29f9dlV-lkp@intel.com/config)
compiler: clang version 20.0.0git (https://github.com/llvm/llvm-project fef3566a25ff0e34fb87339ba5e13eca17cec00f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241007/202410070721.j29f9dlV-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/202410070721.j29f9dlV-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from drivers/pci/controller/pcie-apple.c:23:
   In file included from include/linux/iopoll.h:14:
   In file included from include/linux/io.h:14:
   In file included from arch/powerpc/include/asm/io.h:24:
   In file included from include/linux/mm.h:2232:
   include/linux/vmstat.h:503:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     503 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     504 |                            item];
         |                            ~~~~
   include/linux/vmstat.h:510:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     510 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     511 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
   include/linux/vmstat.h:517:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     517 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
   include/linux/vmstat.h:523:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
     523 |         return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~ ^
     524 |                            NR_VM_NUMA_EVENT_ITEMS +
         |                            ~~~~~~~~~~~~~~~~~~~~~~
>> drivers/pci/controller/pcie-apple.c:468:19: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     468 |                         writel_relaxed(FIELD_PREP(PORT_MSIMAP_TARGET, i) |
         |                                        ^
   4 warnings and 1 error generated.


vim +/FIELD_PREP +468 drivers/pci/controller/pcie-apple.c

   430	
   431	static int apple_pcie_port_setup_irq(struct apple_pcie_port *port)
   432	{
   433		struct fwnode_handle *fwnode = &port->np->fwnode;
   434		struct apple_pcie *pcie = port->pcie;
   435		unsigned int irq;
   436	
   437		/* FIXME: consider moving each interrupt under each port */
   438		irq = irq_of_parse_and_map(to_of_node(dev_fwnode(port->pcie->dev)),
   439					   port->idx);
   440		if (!irq)
   441			return -ENXIO;
   442	
   443		port->domain = irq_domain_create_linear(fwnode, 32,
   444							&apple_port_irq_domain_ops,
   445							port);
   446		if (!port->domain)
   447			return -ENOMEM;
   448	
   449		/* Disable all interrupts */
   450		writel_relaxed(~0, port->base + PORT_INTMSK);
   451		writel_relaxed(~0, port->base + PORT_INTSTAT);
   452		writel_relaxed(~0, port->base + PORT_LINKCMDSTS);
   453	
   454		irq_set_chained_handler_and_data(irq, apple_port_irq_handler, port);
   455	
   456		/* Configure MSI base address */
   457		BUG_ON(upper_32_bits(DOORBELL_ADDR));
   458		writel_relaxed(lower_32_bits(DOORBELL_ADDR),
   459			       port->base + pcie->hw->port_msiaddr);
   460		if (pcie->hw->port_msiaddr_hi)
   461			writel_relaxed(0, port->base + pcie->hw->port_msiaddr_hi);
   462	
   463		/* Enable MSIs, shared between all ports */
   464		if (pcie->hw->port_msimap) {
   465			int i;
   466	
   467			for (i = 0; i < pcie->nvecs; i++) {
 > 468				writel_relaxed(FIELD_PREP(PORT_MSIMAP_TARGET, i) |
   469					       PORT_MSIMAP_ENABLE,
   470					       port->base + pcie->hw->port_msimap + 4 * i);
   471			}
   472	
   473			writel_relaxed(PORT_MSICFG_EN, port->base + PORT_MSICFG);
   474		} else {
   475			writel_relaxed(0, port->base + PORT_MSIBASE);
   476			writel_relaxed((ilog2(pcie->nvecs) << PORT_MSICFG_L2MSINUM_SHIFT) |
   477				PORT_MSICFG_EN, port->base + PORT_MSICFG);
   478		}
   479	
   480		return 0;
   481	}
   482	

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