target/linux/mvebu/patches-3.10/0184-of-irq-Replace-of_irq-with-of_phandle_args.patch

   1 From 1baf727ee1d863a0eacd249cff6afc99022593c2 Mon Sep 17 00:00:00 2001
   2 From: Grant Likely <grant.likely@linaro.org>
   3 Date: Thu, 19 Dec 2013 09:30:55 -0300
   4 Subject: [PATCH 184/203] of/irq: Replace of_irq with of_phandle_args
   5
   6 struct of_irq and struct of_phandle_args are exactly the same structure.
   7 This patch makes the kernel use of_phandle_args everywhere. This in
   8 itself isn't a big deal, but it makes some follow-on patches simpler.
   9
  10 Signed-off-by: Grant Likely <grant.likely@linaro.org>
  11 Acked-by: Michal Simek <monstr@monstr.eu>
  12 Acked-by: Tony Lindgren <tony@atomide.com>
  13 Cc: Russell King <linux@arm.linux.org.uk>
  14 Cc: Ralf Baechle <ralf@linux-mips.org>
  15 Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
  16
  17 Conflicts:
  18         arch/mips/pci/pci-rt3883.c
  19 ---
  20  arch/arm/mach-integrator/pci_v3.c              |  5 ++---
  21  arch/microblaze/pci/pci-common.c               |  9 ++++-----
  22  arch/mips/pci/fixup-lantiq.c                   |  5 ++---
  23  arch/powerpc/kernel/pci-common.c               |  9 ++++-----
  24  arch/powerpc/platforms/cell/celleb_scc_pciex.c |  5 ++---
  25  arch/powerpc/platforms/cell/celleb_scc_sio.c   |  5 ++---
  26  arch/powerpc/platforms/cell/spider-pic.c       |  6 +++---
  27  arch/powerpc/platforms/cell/spu_manage.c       | 12 ++++++------
  28  arch/powerpc/platforms/fsl_uli1575.c           |  8 +++-----
  29  arch/powerpc/platforms/powermac/pic.c          |  8 ++++----
  30  arch/powerpc/platforms/pseries/event_sources.c |  7 +++----
  31  arch/powerpc/sysdev/mpic_msi.c                 |  6 +++---
  32  arch/x86/kernel/devicetree.c                   |  5 ++---
  33  drivers/of/irq.c                               | 15 +++++++--------
  34  drivers/of/of_pci_irq.c                        |  2 +-
  35  drivers/pci/host/pci-mvebu.c                   |  5 ++---
  36  include/linux/of_irq.h                         | 24 ++++--------------------
  37  include/linux/of_pci.h                         |  4 ++--
  38  18 files changed, 56 insertions(+), 84 deletions(-)
  39
  40 --- a/arch/arm/mach-integrator/pci_v3.c
  41 +++ b/arch/arm/mach-integrator/pci_v3.c
  42 @@ -684,7 +684,7 @@ static struct hw_pci pci_v3 __initdata =
  43
  44  static int __init pci_v3_map_irq_dt(const struct pci_dev *dev, u8 slot, u8 pin)
  45  {
  46 -       struct of_irq oirq;
  47 +       struct of_phandle_args oirq;
  48         int ret;
  49
  50         ret = of_irq_parse_pci(dev, &oirq);
  51 @@ -694,8 +694,7 @@ static int __init pci_v3_map_irq_dt(cons
  52                 return 0;
  53         }
  54
  55 -       return irq_create_of_mapping(oirq.controller, oirq.specifier,
  56 -                                    oirq.size);
  57 +       return irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
  58  }
  59
  60  static int __init pci_v3_dtprobe(struct platform_device *pdev,
  61 --- a/arch/microblaze/pci/pci-common.c
  62 +++ b/arch/microblaze/pci/pci-common.c
  63 @@ -199,7 +199,7 @@ void pcibios_set_master(struct pci_dev *
  64   */
  65  int pci_read_irq_line(struct pci_dev *pci_dev)
  66  {
  67 -       struct of_irq oirq;
  68 +       struct of_phandle_args oirq;
  69         unsigned int virq;
  70
  71         /* The current device-tree that iSeries generates from the HV
  72 @@ -243,11 +243,10 @@ int pci_read_irq_line(struct pci_dev *pc
  73                         irq_set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
  74         } else {
  75                 pr_debug(" Got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
  76 -                        oirq.size, oirq.specifier[0], oirq.specifier[1],
  77 -                        of_node_full_name(oirq.controller));
  78 +                        oirq.args_count, oirq.args[0], oirq.args[1],
  79 +                        of_node_full_name(oirq.np));
  80
  81 -               virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
  82 -                                            oirq.size);
  83 +               virq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
  84         }
  85         if (!virq) {
  86                 pr_debug(" Failed to map !\n");
  87 --- a/arch/mips/pci/fixup-lantiq.c
  88 +++ b/arch/mips/pci/fixup-lantiq.c
  89 @@ -25,7 +25,7 @@ int pcibios_plat_dev_init(struct pci_dev
  90
  91  int __init pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  92  {
  93 -       struct of_irq dev_irq;
  94 +       struct of_phandle_args dev_irq;
  95         int irq;
  96
  97         if (of_irq_parse_pci(dev, &dev_irq)) {
  98 @@ -33,8 +33,7 @@ int __init pcibios_map_irq(const struct
  99                         slot, pin);
 100                 return 0;
 101         }
 102 -       irq = irq_create_of_mapping(dev_irq.controller, dev_irq.specifier,
 103 -                                       dev_irq.size);
 104 +       irq = irq_create_of_mapping(dev_irq.np, dev_irq.args, dev_irq.args_count);
 105         dev_info(&dev->dev, "SLOT:%d PIN:%d IRQ:%d\n", slot, pin, irq);
 106         return irq;
 107  }
 108 --- a/arch/powerpc/kernel/pci-common.c
 109 +++ b/arch/powerpc/kernel/pci-common.c
 110 @@ -228,7 +228,7 @@ int pcibios_add_platform_entries(struct
 111   */
 112  static int pci_read_irq_line(struct pci_dev *pci_dev)
 113  {
 114 -       struct of_irq oirq;
 115 +       struct of_phandle_args oirq;
 116         unsigned int virq;
 117
 118         pr_debug("PCI: Try to map irq for %s...\n", pci_name(pci_dev));
 119 @@ -263,11 +263,10 @@ static int pci_read_irq_line(struct pci_
 120                         irq_set_irq_type(virq, IRQ_TYPE_LEVEL_LOW);
 121         } else {
 122                 pr_debug(" Got one, spec %d cells (0x%08x 0x%08x...) on %s\n",
 123 -                        oirq.size, oirq.specifier[0], oirq.specifier[1],
 124 -                        of_node_full_name(oirq.controller));
 125 +                        oirq.args_count, oirq.args[0], oirq.args[1],
 126 +                        of_node_full_name(oirq.np));
 127
 128 -               virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
 129 -                                            oirq.size);
 130 +               virq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
 131         }
 132         if(virq == NO_IRQ) {
 133                 pr_debug(" Failed to map !\n");
 134 --- a/arch/powerpc/platforms/cell/celleb_scc_pciex.c
 135 +++ b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
 136 @@ -486,7 +486,7 @@ static __init int celleb_setup_pciex(str
 137                                      struct pci_controller *phb)
 138  {
 139         struct resource r;
 140 -       struct of_irq oirq;
 141 +       struct of_phandle_args oirq;
 142         int virq;
 143
 144         /* SMMIO registers; used inside this file */
 145 @@ -511,8 +511,7 @@ static __init int celleb_setup_pciex(str
 146                 pr_err("PCIEXC:Failed to map irq\n");
 147                 goto error;
 148         }
 149 -       virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
 150 -                                    oirq.size);
 151 +       virq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
 152         if (request_irq(virq, pciex_handle_internal_irq,
 153                         0, "pciex", (void *)phb)) {
 154                 pr_err("PCIEXC:Failed to request irq\n");
 155 --- a/arch/powerpc/platforms/cell/celleb_scc_sio.c
 156 +++ b/arch/powerpc/platforms/cell/celleb_scc_sio.c
 157 @@ -45,7 +45,7 @@ static int __init txx9_serial_init(void)
 158         struct device_node *node;
 159         int i;
 160         struct uart_port req;
 161 -       struct of_irq irq;
 162 +       struct of_phandle_args irq;
 163         struct resource res;
 164
 165         for_each_compatible_node(node, "serial", "toshiba,sio-scc") {
 166 @@ -66,8 +66,7 @@ static int __init txx9_serial_init(void)
 167  #ifdef CONFIG_SERIAL_TXX9_CONSOLE
 168                         req.membase = ioremap(req.mapbase, 0x24);
 169  #endif
 170 -                       req.irq = irq_create_of_mapping(irq.controller,
 171 -                               irq.specifier, irq.size);
 172 +                       req.irq = irq_create_of_mapping(irq.np, irq.args, irq.args_count);
 173                         req.flags |= UPF_IOREMAP | UPF_BUGGY_UART
 174                                 /*HAVE_CTS_LINE*/;
 175                         req.uartclk = 83300000;
 176 --- a/arch/powerpc/platforms/cell/spider-pic.c
 177 +++ b/arch/powerpc/platforms/cell/spider-pic.c
 178 @@ -235,10 +235,10 @@ static unsigned int __init spider_find_c
 179         /* First, we check whether we have a real "interrupts" in the device
 180          * tree in case the device-tree is ever fixed
 181          */
 182 -       struct of_irq oirq;
 183 +       struct of_phandle_args oirq;
 184         if (of_irq_parse_one(pic->host->of_node, 0, &oirq) == 0) {
 185 -               virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
 186 -                                            oirq.size);
 187 +               virq = irq_create_of_mapping(oirq.np, oirq.args,
 188 +                                            oirq.args_count);
 189                 return virq;
 190         }
 191
 192 --- a/arch/powerpc/platforms/cell/spu_manage.c
 193 +++ b/arch/powerpc/platforms/cell/spu_manage.c
 194 @@ -177,7 +177,7 @@ out:
 195
 196  static int __init spu_map_interrupts(struct spu *spu, struct device_node *np)
 197  {
 198 -       struct of_irq oirq;
 199 +       struct of_phandle_args oirq;
 200         int ret;
 201         int i;
 202
 203 @@ -188,10 +188,10 @@ static int __init spu_map_interrupts(str
 204                         goto err;
 205                 }
 206                 ret = -EINVAL;
 207 -               pr_debug("  irq %d no 0x%x on %s\n", i, oirq.specifier[0],
 208 -                        oirq.controller->full_name);
 209 -               spu->irqs[i] = irq_create_of_mapping(oirq.controller,
 210 -                                       oirq.specifier, oirq.size);
 211 +               pr_debug("  irq %d no 0x%x on %s\n", i, oirq.args[0],
 212 +                        oirq.np->full_name);
 213 +               spu->irqs[i] = irq_create_of_mapping(oirq.np,
 214 +                                       oirq.args, oirq.args_count);
 215                 if (spu->irqs[i] == NO_IRQ) {
 216                         pr_debug("spu_new: failed to map it !\n");
 217                         goto err;
 218 @@ -200,7 +200,7 @@ static int __init spu_map_interrupts(str
 219         return 0;
 220
 221  err:
 222 -       pr_debug("failed to map irq %x for spu %s\n", *oirq.specifier,
 223 +       pr_debug("failed to map irq %x for spu %s\n", *oirq.args,
 224                 spu->name);
 225         for (; i >= 0; i--) {
 226                 if (spu->irqs[i] != NO_IRQ)
 227 --- a/arch/powerpc/platforms/fsl_uli1575.c
 228 +++ b/arch/powerpc/platforms/fsl_uli1575.c
 229 @@ -321,8 +321,8 @@ static void hpcd_final_uli5288(struct pc
 230  {
 231         struct pci_controller *hose = pci_bus_to_host(dev->bus);
 232         struct device_node *hosenode = hose ? hose->dn : NULL;
 233 -       struct of_irq oirq;
 234 -       int virq, pin = 2;
 235 +       struct of_phandle_args oirq;
 236 +       int pin = 2;
 237         u32 laddr[3];
 238
 239         if (!machine_is(mpc86xx_hpcd))
 240 @@ -334,9 +334,7 @@ static void hpcd_final_uli5288(struct pc
 241         laddr[0] = (hose->first_busno << 16) | (PCI_DEVFN(31, 0) << 8);
 242         laddr[1] = laddr[2] = 0;
 243         of_irq_parse_raw(hosenode, &pin, 1, laddr, &oirq);
 244 -       virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
 245 -                                    oirq.size);
 246 -       dev->irq = virq;
 247 +       dev->irq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
 248  }
 249
 250  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_AL, 0x1575, hpcd_quirk_uli1575);
 251 --- a/arch/powerpc/platforms/powermac/pic.c
 252 +++ b/arch/powerpc/platforms/powermac/pic.c
 253 @@ -394,7 +394,7 @@ static void __init pmac_pic_probe_oldsty
 254  }
 255
 256  int of_irq_parse_oldworld(struct device_node *device, int index,
 257 -                       struct of_irq *out_irq)
 258 +                       struct of_phandle_args *out_irq)
 259  {
 260         const u32 *ints = NULL;
 261         int intlen;
 262 @@ -422,9 +422,9 @@ int of_irq_parse_oldworld(struct device_
 263         if (index >= intlen)
 264                 return -EINVAL;
 265
 266 -       out_irq->controller = NULL;
 267 -       out_irq->specifier[0] = ints[index];
 268 -       out_irq->size = 1;
 269 +       out_irq->np = NULL;
 270 +       out_irq->args[0] = ints[index];
 271 +       out_irq->args_count = 1;
 272
 273         return 0;
 274  }
 275 --- a/arch/powerpc/platforms/pseries/event_sources.c
 276 +++ b/arch/powerpc/platforms/pseries/event_sources.c
 277 @@ -25,7 +25,7 @@ void request_event_sources_irqs(struct d
 278                                 const char *name)
 279  {
 280         int i, index, count = 0;
 281 -       struct of_irq oirq;
 282 +       struct of_phandle_args oirq;
 283         const u32 *opicprop;
 284         unsigned int opicplen;
 285         unsigned int virqs[16];
 286 @@ -59,9 +59,8 @@ void request_event_sources_irqs(struct d
 287                      index++) {
 288                         if (count > 15)
 289                                 break;
 290 -                       virqs[count] = irq_create_of_mapping(oirq.controller,
 291 -                                                           oirq.specifier,
 292 -                                                           oirq.size);
 293 +                       virqs[count] = irq_create_of_mapping(oirq.np, oirq.args,
 294 +                                                           oirq.args_count);
 295                         if (virqs[count] == NO_IRQ) {
 296                                 pr_err("event-sources: Unable to allocate "
 297                                        "interrupt number for %s\n",
 298 --- a/arch/powerpc/sysdev/mpic_msi.c
 299 +++ b/arch/powerpc/sysdev/mpic_msi.c
 300 @@ -35,7 +35,7 @@ static int mpic_msi_reserve_u3_hwirqs(st
 301         const struct irq_domain_ops *ops = mpic->irqhost->ops;
 302         struct device_node *np;
 303         int flags, index, i;
 304 -       struct of_irq oirq;
 305 +       struct of_phandle_args oirq;
 306
 307         pr_debug("mpic: found U3, guessing msi allocator setup\n");
 308
 309 @@ -64,8 +64,8 @@ static int mpic_msi_reserve_u3_hwirqs(st
 310
 311                 index = 0;
 312                 while (of_irq_parse_one(np, index++, &oirq) == 0) {
 313 -                       ops->xlate(mpic->irqhost, NULL, oirq.specifier,
 314 -                                               oirq.size, &hwirq, &flags);
 315 +                       ops->xlate(mpic->irqhost, NULL, oirq.args,
 316 +                                               oirq.args_count, &hwirq, &flags);
 317                         msi_bitmap_reserve_hwirq(&mpic->msi_bitmap, hwirq);
 318                 }
 319         }
 320 --- a/arch/x86/kernel/devicetree.c
 321 +++ b/arch/x86/kernel/devicetree.c
 322 @@ -106,7 +106,7 @@ struct device_node *pcibios_get_phb_of_n
 323
 324  static int x86_of_pci_irq_enable(struct pci_dev *dev)
 325  {
 326 -       struct of_irq oirq;
 327 +       struct of_phandle_args oirq;
 328         u32 virq;
 329         int ret;
 330         u8 pin;
 331 @@ -121,8 +121,7 @@ static int x86_of_pci_irq_enable(struct
 332         if (ret)
 333                 return ret;
 334
 335 -       virq = irq_create_of_mapping(oirq.controller, oirq.specifier,
 336 -                       oirq.size);
 337 +       virq = irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
 338         if (virq == 0)
 339                 return -EINVAL;
 340         dev->irq = virq;
 341 --- a/drivers/of/irq.c
 342 +++ b/drivers/of/irq.c
 343 @@ -36,13 +36,12 @@
 344   */
 345  unsigned int irq_of_parse_and_map(struct device_node *dev, int index)
 346  {
 347 -       struct of_irq oirq;
 348 +       struct of_phandle_args oirq;
 349
 350         if (of_irq_parse_one(dev, index, &oirq))
 351                 return 0;
 352
 353 -       return irq_create_of_mapping(oirq.controller, oirq.specifier,
 354 -                                    oirq.size);
 355 +       return irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
 356  }
 357  EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
 358
 359 @@ -94,7 +93,7 @@ struct device_node *of_irq_find_parent(s
 360   * node exist for the parent.
 361   */
 362  int of_irq_parse_raw(struct device_node *parent, const __be32 *intspec,
 363 -                  u32 ointsize, const __be32 *addr, struct of_irq *out_irq)
 364 +                  u32 ointsize, const __be32 *addr, struct of_phandle_args *out_irq)
 365  {
 366         struct device_node *ipar, *tnode, *old = NULL, *newpar = NULL;
 367         const __be32 *tmp, *imap, *imask;
 368 @@ -156,10 +155,10 @@ int of_irq_parse_raw(struct device_node
 369                                 NULL) {
 370                         pr_debug(" -> got it !\n");
 371                         for (i = 0; i < intsize; i++)
 372 -                               out_irq->specifier[i] =
 373 +                               out_irq->args[i] =
 374                                                 of_read_number(intspec +i, 1);
 375 -                       out_irq->size = intsize;
 376 -                       out_irq->controller = ipar;
 377 +                       out_irq->args_count = intsize;
 378 +                       out_irq->np = ipar;
 379                         of_node_put(old);
 380                         return 0;
 381                 }
 382 @@ -280,7 +279,7 @@ EXPORT_SYMBOL_GPL(of_irq_parse_raw);
 383   * This function resolves an interrupt, walking the tree, for a given
 384   * device-tree node. It's the high level pendant to of_irq_parse_raw().
 385   */
 386 -int of_irq_parse_one(struct device_node *device, int index, struct of_irq *out_irq)
 387 +int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_args *out_irq)
 388  {
 389         struct device_node *p;
 390         const __be32 *intspec, *tmp, *addr;
 391 --- a/drivers/of/of_pci_irq.c
 392 +++ b/drivers/of/of_pci_irq.c
 393 @@ -15,7 +15,7 @@
 394   * PCI tree until an device-node is found, at which point it will finish
 395   * resolving using the OF tree walking.
 396   */
 397 -int of_irq_parse_pci(const struct pci_dev *pdev, struct of_irq *out_irq)
 398 +int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq)
 399  {
 400         struct device_node *dn, *ppnode;
 401         struct pci_dev *ppdev;
 402 --- a/drivers/pci/host/pci-mvebu.c
 403 +++ b/drivers/pci/host/pci-mvebu.c
 404 @@ -649,15 +649,14 @@ static int __init mvebu_pcie_setup(int n
 405
 406  static int __init mvebu_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 407  {
 408 -       struct of_irq oirq;
 409 +       struct of_phandle_args oirq;
 410         int ret;
 411
 412         ret = of_irq_parse_pci(dev, &oirq);
 413         if (ret)
 414                 return ret;
 415
 416 -       return irq_create_of_mapping(oirq.controller, oirq.specifier,
 417 -                                    oirq.size);
 418 +       return irq_create_of_mapping(oirq.np, oirq.args, oirq.args_count);
 419  }
 420
 421  static struct pci_bus *mvebu_pcie_scan_bus(int nr, struct pci_sys_data *sys)
 422 --- a/include/linux/of_irq.h
 423 +++ b/include/linux/of_irq.h
 424 @@ -8,22 +8,6 @@
 425  #include <linux/ioport.h>
 426  #include <linux/of.h>
 427
 428 -/**
 429 - * of_irq - container for device_node/irq_specifier pair for an irq controller
 430 - * @controller: pointer to interrupt controller device tree node
 431 - * @size: size of interrupt specifier
 432 - * @specifier: array of cells @size long specifing the specific interrupt
 433 - *
 434 - * This structure is returned when an interrupt is mapped. The controller
 435 - * field needs to be put() after use
 436 - */
 437 -#define OF_MAX_IRQ_SPEC                4 /* We handle specifiers of at most 4 cells */
 438 -struct of_irq {
 439 -       struct device_node *controller; /* Interrupt controller node */
 440 -       u32 size; /* Specifier size */
 441 -       u32 specifier[OF_MAX_IRQ_SPEC]; /* Specifier copy */
 442 -};
 443 -
 444  typedef int (*of_irq_init_cb_t)(struct device_node *, struct device_node *);
 445
 446  /*
 447 @@ -36,12 +20,12 @@ typedef int (*of_irq_init_cb_t)(struct d
 448  extern unsigned int of_irq_workarounds;
 449  extern struct device_node *of_irq_dflt_pic;
 450  extern int of_irq_parse_oldworld(struct device_node *device, int index,
 451 -                              struct of_irq *out_irq);
 452 +                              struct of_phandle_args *out_irq);
 453  #else /* CONFIG_PPC32 && CONFIG_PPC_PMAC */
 454  #define of_irq_workarounds (0)
 455  #define of_irq_dflt_pic (NULL)
 456  static inline int of_irq_parse_oldworld(struct device_node *device, int index,
 457 -                                     struct of_irq *out_irq)
 458 +                                     struct of_phandle_args *out_irq)
 459  {
 460         return -EINVAL;
 461  }
 462 @@ -50,9 +34,9 @@ static inline int of_irq_parse_oldworld(
 463
 464  extern int of_irq_parse_raw(struct device_node *parent, const __be32 *intspec,
 465                           u32 ointsize, const __be32 *addr,
 466 -                         struct of_irq *out_irq);
 467 +                         struct of_phandle_args *out_irq);
 468  extern int of_irq_parse_one(struct device_node *device, int index,
 469 -                         struct of_irq *out_irq);
 470 +                         struct of_phandle_args *out_irq);
 471  extern unsigned int irq_create_of_mapping(struct device_node *controller,
 472                                           const u32 *intspec,
 473                                           unsigned int intsize);
 474 --- a/include/linux/of_pci.h
 475 +++ b/include/linux/of_pci.h
 476 @@ -5,8 +5,8 @@
 477  #include <linux/msi.h>
 478
 479  struct pci_dev;
 480 -struct of_irq;
 481 -int of_irq_parse_pci(const struct pci_dev *pdev, struct of_irq *out_irq);
 482 +struct of_phandle_args;
 483 +int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq);
 484
 485  struct device_node;
 486  struct device_node *of_pci_find_child_device(struct device_node *parent,