1 /*- 2 * Copyright (c) 2010 Isilon Systems, Inc. 3 * Copyright (c) 2010 iX Systems, Inc. 4 * Copyright (c) 2010 Panasas, Inc. 5 * Copyright (c) 2013-2016 Mellanox Technologies, Ltd. 6 * All rights reserved. 7 * Copyright (c) 2021-2025 The FreeBSD Foundation 8 * 9 * Portions of this software were developed by Björn Zeeb 10 * under sponsorship from the FreeBSD Foundation. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice unmodified, this list of conditions, and the following 17 * disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 #ifndef _LINUXKPI_LINUX_DEVICE_H_ 34 #define _LINUXKPI_LINUX_DEVICE_H_ 35 36 #include <linux/err.h> 37 #include <linux/types.h> 38 #include <linux/kobject.h> 39 #include <linux/sysfs.h> 40 #include <linux/list.h> 41 #include <linux/compiler.h> 42 #include <linux/module.h> 43 #include <linux/workqueue.h> 44 #include <linux/kdev_t.h> 45 #include <linux/backlight.h> 46 #include <linux/pm.h> 47 #include <linux/idr.h> 48 #include <linux/overflow.h> 49 #include <linux/ratelimit.h> /* via linux/dev_printk.h */ 50 #include <linux/fwnode.h> 51 #include <asm/atomic.h> 52 53 #include <sys/bus.h> 54 #include <sys/backlight.h> 55 56 struct device; 57 58 struct class { 59 const char *name; 60 struct kobject kobj; 61 devclass_t bsdclass; 62 const struct dev_pm_ops *pm; 63 const struct attribute_group **dev_groups; 64 void (*class_release)(struct class *class); 65 void (*dev_release)(struct device *dev); 66 char * (*devnode)(struct device *dev, umode_t *mode); 67 }; 68 69 struct dev_pm_ops { 70 int (*prepare)(struct device *dev); 71 void (*complete)(struct device *dev); 72 int (*suspend)(struct device *dev); 73 int (*suspend_late)(struct device *dev); 74 int (*resume)(struct device *dev); 75 int (*resume_early)(struct device *dev); 76 int (*freeze)(struct device *dev); 77 int (*freeze_late)(struct device *dev); 78 int (*thaw)(struct device *dev); 79 int (*thaw_early)(struct device *dev); 80 int (*poweroff)(struct device *dev); 81 int (*poweroff_late)(struct device *dev); 82 int (*restore)(struct device *dev); 83 int (*restore_early)(struct device *dev); 84 int (*suspend_noirq)(struct device *dev); 85 int (*runtime_suspend)(struct device *dev); 86 int (*runtime_resume)(struct device *dev); 87 int (*runtime_idle)(struct device *dev); 88 }; 89 90 struct device_driver { 91 const char *name; 92 const struct dev_pm_ops *pm; 93 94 void (*shutdown) (struct device *); 95 void (*coredump) (struct device *); 96 }; 97 98 struct device_type { 99 const char *name; 100 }; 101 102 struct device { 103 struct device *parent; 104 struct list_head irqents; 105 device_t bsddev; 106 /* 107 * The following flag is used to determine if the LinuxKPI is 108 * responsible for detaching the BSD device or not. If the 109 * LinuxKPI got the BSD device using devclass_get_device(), it 110 * must not try to detach or delete it, because it's already 111 * done somewhere else. 112 */ 113 bool bsddev_attached_here; 114 struct device_driver *driver; 115 struct device_type *type; 116 dev_t devt; 117 struct class *class; 118 void (*release)(struct device *dev); 119 struct kobject kobj; 120 void *dma_priv; 121 void *driver_data; 122 unsigned int irq; 123 #define LINUX_IRQ_INVALID 65535 124 unsigned int irq_start; 125 unsigned int irq_end; 126 const struct attribute_group **groups; 127 struct fwnode_handle *fwnode; 128 struct cdev *backlight_dev; 129 struct backlight_device *bd; 130 131 spinlock_t devres_lock; 132 struct list_head devres_head; 133 134 struct dev_pm_info power; 135 }; 136 137 extern struct device linux_root_device; 138 extern struct kobject linux_class_root; 139 extern const struct kobj_type linux_dev_ktype; 140 extern const struct kobj_type linux_class_ktype; 141 142 struct class_attribute { 143 struct attribute attr; 144 ssize_t (*show)(struct class *, struct class_attribute *, char *); 145 ssize_t (*store)(struct class *, struct class_attribute *, const char *, size_t); 146 const void *(*namespace)(struct class *, const struct class_attribute *); 147 }; 148 149 #define CLASS_ATTR(_name, _mode, _show, _store) \ 150 struct class_attribute class_attr_##_name = \ 151 { { #_name, NULL, _mode }, _show, _store } 152 153 struct device_attribute { 154 struct attribute attr; 155 ssize_t (*show)(struct device *, 156 struct device_attribute *, char *); 157 ssize_t (*store)(struct device *, 158 struct device_attribute *, const char *, 159 size_t); 160 }; 161 162 #define DEVICE_ATTR(_name, _mode, _show, _store) \ 163 struct device_attribute dev_attr_##_name = \ 164 __ATTR(_name, _mode, _show, _store) 165 #define DEVICE_ATTR_RO(_name) \ 166 struct device_attribute dev_attr_##_name = __ATTR_RO(_name) 167 #define DEVICE_ATTR_WO(_name) \ 168 struct device_attribute dev_attr_##_name = __ATTR_WO(_name) 169 #define DEVICE_ATTR_RW(_name) \ 170 struct device_attribute dev_attr_##_name = __ATTR_RW(_name) 171 172 /* Simple class attribute that is just a static string */ 173 struct class_attribute_string { 174 struct class_attribute attr; 175 char *str; 176 }; 177 178 static inline ssize_t 179 show_class_attr_string(struct class *class, 180 struct class_attribute *attr, char *buf) 181 { 182 struct class_attribute_string *cs; 183 cs = container_of(attr, struct class_attribute_string, attr); 184 return snprintf(buf, PAGE_SIZE, "%s\n", cs->str); 185 } 186 187 /* Currently read-only only */ 188 #define _CLASS_ATTR_STRING(_name, _mode, _str) \ 189 { __ATTR(_name, _mode, show_class_attr_string, NULL), _str } 190 #define CLASS_ATTR_STRING(_name, _mode, _str) \ 191 struct class_attribute_string class_attr_##_name = \ 192 _CLASS_ATTR_STRING(_name, _mode, _str) 193 194 #define dev_printk(lvl, dev, fmt, ...) \ 195 device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 196 197 #define dev_emerg(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 198 #define dev_alert(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 199 #define dev_crit(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 200 #define dev_err(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 201 #define dev_warn(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 202 #define dev_notice(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 203 #define dev_info(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 204 #define dev_dbg(dev, fmt, ...) do { } while (0) 205 206 #define dev_WARN(dev, fmt, ...) \ 207 device_printf((dev)->bsddev, "%s:%d: " fmt, __func__, __LINE__, ##__VA_ARGS__) 208 209 #define dev_WARN_ONCE(dev, condition, fmt, ...) do { \ 210 static bool __dev_WARN_ONCE; \ 211 bool __ret_warn_on = (condition); \ 212 if (unlikely(__ret_warn_on)) { \ 213 if (!__dev_WARN_ONCE) { \ 214 __dev_WARN_ONCE = true; \ 215 device_printf((dev)->bsddev, "%s:%d: " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 216 } \ 217 } \ 218 } while (0) 219 220 #define dev_info_once(dev, ...) do { \ 221 static bool __dev_info_once; \ 222 if (!__dev_info_once) { \ 223 __dev_info_once = true; \ 224 dev_info(dev, __VA_ARGS__); \ 225 } \ 226 } while (0) 227 228 #define dev_warn_once(dev, ...) do { \ 229 static bool __dev_warn_once; \ 230 if (!__dev_warn_once) { \ 231 __dev_warn_once = 1; \ 232 dev_warn(dev, __VA_ARGS__); \ 233 } \ 234 } while (0) 235 236 #define dev_err_once(dev, ...) do { \ 237 static bool __dev_err_once; \ 238 if (!__dev_err_once) { \ 239 __dev_err_once = 1; \ 240 dev_err(dev, __VA_ARGS__); \ 241 } \ 242 } while (0) 243 244 #define dev_dbg_once(dev, ...) do { \ 245 static bool __dev_dbg_once; \ 246 if (!__dev_dbg_once) { \ 247 __dev_dbg_once = 1; \ 248 dev_dbg(dev, __VA_ARGS__); \ 249 } \ 250 } while (0) 251 252 #define dev_err_ratelimited(dev, ...) do { \ 253 static linux_ratelimit_t __ratelimited; \ 254 if (linux_ratelimited(&__ratelimited)) \ 255 dev_err(dev, __VA_ARGS__); \ 256 } while (0) 257 258 #define dev_warn_ratelimited(dev, ...) do { \ 259 static linux_ratelimit_t __ratelimited; \ 260 if (linux_ratelimited(&__ratelimited)) \ 261 dev_warn(dev, __VA_ARGS__); \ 262 } while (0) 263 264 #define dev_dbg_ratelimited(dev, ...) do { \ 265 static linux_ratelimit_t __ratelimited; \ 266 if (linux_ratelimited(&__ratelimited)) \ 267 dev_dbg(dev, __VA_ARGS__); \ 268 } while (0) 269 270 /* Public and LinuxKPI internal devres functions. */ 271 void *lkpi_devres_alloc(void(*release)(struct device *, void *), size_t, gfp_t); 272 void lkpi_devres_add(struct device *, void *); 273 void lkpi_devres_free(void *); 274 void *lkpi_devres_find(struct device *, void(*release)(struct device *, void *), 275 int (*match)(struct device *, void *, void *), void *); 276 int lkpi_devres_destroy(struct device *, void(*release)(struct device *, void *), 277 int (*match)(struct device *, void *, void *), void *); 278 #define devres_alloc(_r, _s, _g) lkpi_devres_alloc(_r, _s, _g) 279 #define devres_add(_d, _p) lkpi_devres_add(_d, _p) 280 #define devres_free(_p) lkpi_devres_free(_p) 281 #define devres_find(_d, _rfn, _mfn, _mp) \ 282 lkpi_devres_find(_d, _rfn, _mfn, _mp) 283 #define devres_destroy(_d, _rfn, _mfn, _mp) \ 284 lkpi_devres_destroy(_d, _rfn, _mfn, _mp) 285 void lkpi_devres_release_free_list(struct device *); 286 void lkpi_devres_unlink(struct device *, void *); 287 void lkpi_devm_kmalloc_release(struct device *, void *); 288 void lkpi_devm_kfree(struct device *, const void *); 289 #define devm_kfree(_d, _p) lkpi_devm_kfree(_d, _p) 290 291 static inline const char * 292 dev_driver_string(const struct device *dev) 293 { 294 driver_t *drv; 295 const char *str = ""; 296 297 if (dev->bsddev != NULL) { 298 drv = device_get_driver(dev->bsddev); 299 if (drv != NULL) 300 str = drv->name; 301 } 302 303 return (str); 304 } 305 306 static inline void * 307 dev_get_drvdata(const struct device *dev) 308 { 309 310 return dev->driver_data; 311 } 312 313 static inline void 314 dev_set_drvdata(struct device *dev, void *data) 315 { 316 317 dev->driver_data = data; 318 } 319 320 static inline struct device * 321 get_device(struct device *dev) 322 { 323 324 if (dev) 325 kobject_get(&dev->kobj); 326 327 return (dev); 328 } 329 330 static inline char * 331 dev_name(const struct device *dev) 332 { 333 334 return kobject_name(&dev->kobj); 335 } 336 337 static inline bool 338 dev_is_removable(struct device *dev) 339 { 340 341 return (false); 342 } 343 344 #define dev_set_name(_dev, _fmt, ...) \ 345 kobject_set_name(&(_dev)->kobj, (_fmt), ##__VA_ARGS__) 346 347 static inline void 348 put_device(struct device *dev) 349 { 350 351 if (dev) 352 kobject_put(&dev->kobj); 353 } 354 355 struct class *lkpi_class_create(const char *name); 356 #if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 60400 357 #define class_create(name) lkpi_class_create(name) 358 #else 359 #define class_create(owner, name) lkpi_class_create(name) 360 #endif 361 362 static inline int 363 class_register(struct class *class) 364 { 365 366 class->bsdclass = devclass_create(class->name); 367 kobject_init(&class->kobj, &linux_class_ktype); 368 kobject_set_name(&class->kobj, class->name); 369 kobject_add(&class->kobj, &linux_class_root, class->name); 370 371 return (0); 372 } 373 374 static inline void 375 class_unregister(struct class *class) 376 { 377 378 kobject_put(&class->kobj); 379 } 380 381 static inline struct device *kobj_to_dev(struct kobject *kobj) 382 { 383 return container_of(kobj, struct device, kobj); 384 } 385 386 struct device *device_create(struct class *class, struct device *parent, 387 dev_t devt, void *drvdata, const char *fmt, ...); 388 struct device *device_create_groups_vargs(struct class *class, struct device *parent, 389 dev_t devt, void *drvdata, const struct attribute_group **groups, 390 const char *fmt, va_list args); 391 392 /* 393 * Devices are registered and created for exporting to sysfs. Create 394 * implies register and register assumes the device fields have been 395 * setup appropriately before being called. 396 */ 397 static inline void 398 device_initialize(struct device *dev) 399 { 400 device_t bsddev = NULL; 401 int unit = -1; 402 403 if (dev->devt) { 404 unit = MINOR(dev->devt); 405 bsddev = devclass_get_device(dev->class->bsdclass, unit); 406 dev->bsddev_attached_here = false; 407 } else if (dev->parent == NULL) { 408 bsddev = devclass_get_device(dev->class->bsdclass, 0); 409 dev->bsddev_attached_here = false; 410 } else { 411 dev->bsddev_attached_here = true; 412 } 413 414 if (bsddev == NULL && dev->parent != NULL) { 415 bsddev = device_add_child(dev->parent->bsddev, 416 dev->class->kobj.name, unit); 417 } 418 419 if (bsddev != NULL) 420 device_set_softc(bsddev, dev); 421 422 dev->bsddev = bsddev; 423 MPASS(dev->bsddev != NULL); 424 kobject_init(&dev->kobj, &linux_dev_ktype); 425 426 spin_lock_init(&dev->devres_lock); 427 INIT_LIST_HEAD(&dev->devres_head); 428 } 429 430 static inline int 431 device_add(struct device *dev) 432 { 433 if (dev->bsddev != NULL) { 434 if (dev->devt == 0) 435 dev->devt = makedev(0, device_get_unit(dev->bsddev)); 436 } 437 kobject_add(&dev->kobj, &dev->class->kobj, dev_name(dev)); 438 439 if (dev->groups) 440 return (sysfs_create_groups(&dev->kobj, dev->groups)); 441 442 return (0); 443 } 444 445 static inline void 446 device_create_release(struct device *dev) 447 { 448 kfree(dev); 449 } 450 451 static inline struct device * 452 device_create_with_groups(struct class *class, 453 struct device *parent, dev_t devt, void *drvdata, 454 const struct attribute_group **groups, const char *fmt, ...) 455 { 456 va_list vargs; 457 struct device *dev; 458 459 va_start(vargs, fmt); 460 dev = device_create_groups_vargs(class, parent, devt, drvdata, 461 groups, fmt, vargs); 462 va_end(vargs); 463 return dev; 464 } 465 466 static inline bool 467 device_is_registered(struct device *dev) 468 { 469 470 return (dev->bsddev != NULL); 471 } 472 473 static inline int 474 device_register(struct device *dev) 475 { 476 device_t bsddev = NULL; 477 int unit = -1; 478 479 if (device_is_registered(dev)) 480 goto done; 481 482 if (dev->devt) { 483 unit = MINOR(dev->devt); 484 bsddev = devclass_get_device(dev->class->bsdclass, unit); 485 dev->bsddev_attached_here = false; 486 } else if (dev->parent == NULL) { 487 bsddev = devclass_get_device(dev->class->bsdclass, 0); 488 dev->bsddev_attached_here = false; 489 } else { 490 dev->bsddev_attached_here = true; 491 } 492 if (bsddev == NULL && dev->parent != NULL) { 493 bsddev = device_add_child(dev->parent->bsddev, 494 dev->class->kobj.name, unit); 495 } 496 if (bsddev != NULL) { 497 if (dev->devt == 0) 498 dev->devt = makedev(0, device_get_unit(bsddev)); 499 device_set_softc(bsddev, dev); 500 } 501 dev->bsddev = bsddev; 502 done: 503 kobject_init(&dev->kobj, &linux_dev_ktype); 504 kobject_add(&dev->kobj, &dev->class->kobj, dev_name(dev)); 505 506 sysfs_create_groups(&dev->kobj, dev->class->dev_groups); 507 508 return (0); 509 } 510 511 static inline void 512 device_unregister(struct device *dev) 513 { 514 device_t bsddev; 515 516 sysfs_remove_groups(&dev->kobj, dev->class->dev_groups); 517 518 bsddev = dev->bsddev; 519 dev->bsddev = NULL; 520 521 if (bsddev != NULL && dev->bsddev_attached_here) { 522 bus_topo_lock(); 523 device_delete_child(device_get_parent(bsddev), bsddev); 524 bus_topo_unlock(); 525 } 526 put_device(dev); 527 } 528 529 static inline void 530 device_del(struct device *dev) 531 { 532 device_t bsddev; 533 534 bsddev = dev->bsddev; 535 dev->bsddev = NULL; 536 537 if (bsddev != NULL && dev->bsddev_attached_here) { 538 bus_topo_lock(); 539 device_delete_child(device_get_parent(bsddev), bsddev); 540 bus_topo_unlock(); 541 } 542 } 543 544 static inline void 545 device_destroy(struct class *class, dev_t devt) 546 { 547 device_t bsddev; 548 int unit; 549 550 unit = MINOR(devt); 551 bsddev = devclass_get_device(class->bsdclass, unit); 552 if (bsddev != NULL) 553 device_unregister(device_get_softc(bsddev)); 554 } 555 556 static inline void 557 device_release_driver(struct device *dev) 558 { 559 560 #if 0 561 /* This leads to panics. Disable temporarily. Keep to rework. */ 562 563 /* We also need to cleanup LinuxKPI bits. What else? */ 564 lkpi_devres_release_free_list(dev); 565 dev_set_drvdata(dev, NULL); 566 /* Do not call dev->release! */ 567 568 bus_topo_lock(); 569 if (device_is_attached(dev->bsddev)) 570 device_detach(dev->bsddev); 571 bus_topo_unlock(); 572 #endif 573 } 574 575 static inline int 576 device_reprobe(struct device *dev) 577 { 578 int error; 579 580 device_release_driver(dev); 581 bus_topo_lock(); 582 error = device_probe_and_attach(dev->bsddev); 583 bus_topo_unlock(); 584 585 return (-error); 586 } 587 588 static inline void 589 device_set_wakeup_enable(struct device *dev __unused, bool enable __unused) 590 { 591 592 /* 593 * XXX-BZ TODO This is used by wireless drivers supporting WoWLAN which 594 * we currently do not support. 595 */ 596 } 597 598 static inline int 599 device_wakeup_enable(struct device *dev) 600 { 601 602 device_set_wakeup_enable(dev, true); 603 return (0); 604 } 605 606 static inline bool 607 device_iommu_mapped(struct device *dev __unused) 608 { 609 return (false); 610 } 611 612 #define dev_pm_set_driver_flags(dev, flags) do { \ 613 } while (0) 614 615 static inline void 616 linux_class_kfree(struct class *class) 617 { 618 619 kfree(class); 620 } 621 622 static inline void 623 class_destroy(struct class *class) 624 { 625 626 if (class == NULL) 627 return; 628 class_unregister(class); 629 } 630 631 static inline int 632 device_create_file(struct device *dev, const struct device_attribute *attr) 633 { 634 635 if (dev) 636 return sysfs_create_file(&dev->kobj, &attr->attr); 637 return -EINVAL; 638 } 639 640 static inline void 641 device_remove_file(struct device *dev, const struct device_attribute *attr) 642 { 643 644 if (dev) 645 sysfs_remove_file(&dev->kobj, &attr->attr); 646 } 647 648 static inline int 649 class_create_file(struct class *class, const struct class_attribute *attr) 650 { 651 652 if (class) 653 return sysfs_create_file(&class->kobj, &attr->attr); 654 return -EINVAL; 655 } 656 657 static inline void 658 class_remove_file(struct class *class, const struct class_attribute *attr) 659 { 660 661 if (class) 662 sysfs_remove_file(&class->kobj, &attr->attr); 663 } 664 665 #define dev_to_node(dev) linux_dev_to_node(dev) 666 #define of_node_to_nid(node) -1 667 int linux_dev_to_node(struct device *); 668 669 char *kvasprintf(gfp_t, const char *, va_list); 670 char *kasprintf(gfp_t, const char *, ...); 671 char *lkpi_devm_kasprintf(struct device *, gfp_t, const char *, ...); 672 673 #define devm_kasprintf(_dev, _gfp, _fmt, ...) \ 674 lkpi_devm_kasprintf(_dev, _gfp, _fmt, ##__VA_ARGS__) 675 676 static __inline void * 677 devm_kmalloc(struct device *dev, size_t size, gfp_t gfp) 678 { 679 void *p; 680 681 p = lkpi_devres_alloc(lkpi_devm_kmalloc_release, size, gfp); 682 if (p != NULL) 683 lkpi_devres_add(dev, p); 684 685 return (p); 686 } 687 688 static inline void * 689 devm_kmemdup(struct device *dev, const void *src, size_t len, gfp_t gfp) 690 { 691 void *dst; 692 693 if (len == 0) 694 return (NULL); 695 696 dst = devm_kmalloc(dev, len, gfp); 697 if (dst != NULL) 698 memcpy(dst, src, len); 699 700 return (dst); 701 } 702 703 #define devm_kzalloc(_dev, _size, _gfp) \ 704 devm_kmalloc((_dev), (_size), (_gfp) | __GFP_ZERO) 705 706 #define devm_kcalloc(_dev, _sizen, _size, _gfp) \ 707 devm_kmalloc((_dev), ((_sizen) * (_size)), (_gfp) | __GFP_ZERO) 708 709 int lkpi_devm_add_action(struct device *dev, void (*action)(void *), void *data); 710 #define devm_add_action(dev, action, data) \ 711 lkpi_devm_add_action(dev, action, data); 712 int lkpi_devm_add_action_or_reset(struct device *dev, void (*action)(void *), void *data); 713 #define devm_add_action_or_reset(dev, action, data) \ 714 lkpi_devm_add_action_or_reset(dev, action, data) 715 716 int lkpi_devm_device_add_group(struct device *dev, const struct attribute_group *group); 717 #define devm_device_add_group(dev, group) \ 718 lkpi_devm_device_add_group(dev, group) 719 720 #endif /* _LINUXKPI_LINUX_DEVICE_H_ */ 721