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) 2021-2022 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 }; 96 97 struct device_type { 98 const char *name; 99 }; 100 101 struct device { 102 struct device *parent; 103 struct list_head irqents; 104 device_t bsddev; 105 /* 106 * The following flag is used to determine if the LinuxKPI is 107 * responsible for detaching the BSD device or not. If the 108 * LinuxKPI got the BSD device using devclass_get_device(), it 109 * must not try to detach or delete it, because it's already 110 * done somewhere else. 111 */ 112 bool bsddev_attached_here; 113 struct device_driver *driver; 114 struct device_type *type; 115 dev_t devt; 116 struct class *class; 117 void (*release)(struct device *dev); 118 struct kobject kobj; 119 void *dma_priv; 120 void *driver_data; 121 unsigned int irq; 122 #define LINUX_IRQ_INVALID 65535 123 unsigned int irq_start; 124 unsigned int irq_end; 125 const struct attribute_group **groups; 126 struct fwnode_handle *fwnode; 127 struct cdev *backlight_dev; 128 struct backlight_device *bd; 129 130 spinlock_t devres_lock; 131 struct list_head devres_head; 132 133 struct dev_pm_info power; 134 }; 135 136 extern struct device linux_root_device; 137 extern struct kobject linux_class_root; 138 extern const struct kobj_type linux_dev_ktype; 139 extern const struct kobj_type linux_class_ktype; 140 141 struct class_attribute { 142 struct attribute attr; 143 ssize_t (*show)(struct class *, struct class_attribute *, char *); 144 ssize_t (*store)(struct class *, struct class_attribute *, const char *, size_t); 145 const void *(*namespace)(struct class *, const struct class_attribute *); 146 }; 147 148 #define CLASS_ATTR(_name, _mode, _show, _store) \ 149 struct class_attribute class_attr_##_name = \ 150 { { #_name, NULL, _mode }, _show, _store } 151 152 struct device_attribute { 153 struct attribute attr; 154 ssize_t (*show)(struct device *, 155 struct device_attribute *, char *); 156 ssize_t (*store)(struct device *, 157 struct device_attribute *, const char *, 158 size_t); 159 }; 160 161 #define DEVICE_ATTR(_name, _mode, _show, _store) \ 162 struct device_attribute dev_attr_##_name = \ 163 __ATTR(_name, _mode, _show, _store) 164 #define DEVICE_ATTR_RO(_name) \ 165 struct device_attribute dev_attr_##_name = __ATTR_RO(_name) 166 #define DEVICE_ATTR_WO(_name) \ 167 struct device_attribute dev_attr_##_name = __ATTR_WO(_name) 168 #define DEVICE_ATTR_RW(_name) \ 169 struct device_attribute dev_attr_##_name = __ATTR_RW(_name) 170 171 /* Simple class attribute that is just a static string */ 172 struct class_attribute_string { 173 struct class_attribute attr; 174 char *str; 175 }; 176 177 static inline ssize_t 178 show_class_attr_string(struct class *class, 179 struct class_attribute *attr, char *buf) 180 { 181 struct class_attribute_string *cs; 182 cs = container_of(attr, struct class_attribute_string, attr); 183 return snprintf(buf, PAGE_SIZE, "%s\n", cs->str); 184 } 185 186 /* Currently read-only only */ 187 #define _CLASS_ATTR_STRING(_name, _mode, _str) \ 188 { __ATTR(_name, _mode, show_class_attr_string, NULL), _str } 189 #define CLASS_ATTR_STRING(_name, _mode, _str) \ 190 struct class_attribute_string class_attr_##_name = \ 191 _CLASS_ATTR_STRING(_name, _mode, _str) 192 193 #define dev_printk(lvl, dev, fmt, ...) \ 194 device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 195 196 #define dev_emerg(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 197 #define dev_alert(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 198 #define dev_crit(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 199 #define dev_err(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 200 #define dev_warn(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 201 #define dev_notice(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 202 #define dev_info(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__) 203 #define dev_dbg(dev, fmt, ...) do { } while (0) 204 205 #define dev_WARN(dev, fmt, ...) \ 206 device_printf((dev)->bsddev, "%s:%d: " fmt, __func__, __LINE__, ##__VA_ARGS__) 207 208 #define dev_WARN_ONCE(dev, condition, fmt, ...) do { \ 209 static bool __dev_WARN_ONCE; \ 210 bool __ret_warn_on = (condition); \ 211 if (unlikely(__ret_warn_on)) { \ 212 if (!__dev_WARN_ONCE) { \ 213 __dev_WARN_ONCE = true; \ 214 device_printf((dev)->bsddev, "%s:%d: " fmt, __func__, __LINE__, ##__VA_ARGS__); \ 215 } \ 216 } \ 217 } while (0) 218 219 #define dev_info_once(dev, ...) do { \ 220 static bool __dev_info_once; \ 221 if (!__dev_info_once) { \ 222 __dev_info_once = true; \ 223 dev_info(dev, __VA_ARGS__); \ 224 } \ 225 } while (0) 226 227 #define dev_warn_once(dev, ...) do { \ 228 static bool __dev_warn_once; \ 229 if (!__dev_warn_once) { \ 230 __dev_warn_once = 1; \ 231 dev_warn(dev, __VA_ARGS__); \ 232 } \ 233 } while (0) 234 235 #define dev_err_once(dev, ...) do { \ 236 static bool __dev_err_once; \ 237 if (!__dev_err_once) { \ 238 __dev_err_once = 1; \ 239 dev_err(dev, __VA_ARGS__); \ 240 } \ 241 } while (0) 242 243 #define dev_dbg_once(dev, ...) do { \ 244 static bool __dev_dbg_once; \ 245 if (!__dev_dbg_once) { \ 246 __dev_dbg_once = 1; \ 247 dev_dbg(dev, __VA_ARGS__); \ 248 } \ 249 } while (0) 250 251 #define dev_err_ratelimited(dev, ...) do { \ 252 static linux_ratelimit_t __ratelimited; \ 253 if (linux_ratelimited(&__ratelimited)) \ 254 dev_err(dev, __VA_ARGS__); \ 255 } while (0) 256 257 #define dev_warn_ratelimited(dev, ...) do { \ 258 static linux_ratelimit_t __ratelimited; \ 259 if (linux_ratelimited(&__ratelimited)) \ 260 dev_warn(dev, __VA_ARGS__); \ 261 } while (0) 262 263 #define dev_dbg_ratelimited(dev, ...) do { \ 264 static linux_ratelimit_t __ratelimited; \ 265 if (linux_ratelimited(&__ratelimited)) \ 266 dev_dbg(dev, __VA_ARGS__); \ 267 } while (0) 268 269 /* Public and LinuxKPI internal devres functions. */ 270 void *lkpi_devres_alloc(void(*release)(struct device *, void *), size_t, gfp_t); 271 void lkpi_devres_add(struct device *, void *); 272 void lkpi_devres_free(void *); 273 void *lkpi_devres_find(struct device *, void(*release)(struct device *, void *), 274 int (*match)(struct device *, void *, void *), void *); 275 int lkpi_devres_destroy(struct device *, void(*release)(struct device *, void *), 276 int (*match)(struct device *, void *, void *), void *); 277 #define devres_alloc(_r, _s, _g) lkpi_devres_alloc(_r, _s, _g) 278 #define devres_add(_d, _p) lkpi_devres_add(_d, _p) 279 #define devres_free(_p) lkpi_devres_free(_p) 280 #define devres_find(_d, _rfn, _mfn, _mp) \ 281 lkpi_devres_find(_d, _rfn, _mfn, _mp) 282 #define devres_destroy(_d, _rfn, _mfn, _mp) \ 283 lkpi_devres_destroy(_d, _rfn, _mfn, _mp) 284 void lkpi_devres_release_free_list(struct device *); 285 void lkpi_devres_unlink(struct device *, void *); 286 void lkpi_devm_kmalloc_release(struct device *, void *); 287 #define devm_kfree(_d, _p) lkpi_devm_kmalloc_release(_d, _p) 288 289 static inline const char * 290 dev_driver_string(const struct device *dev) 291 { 292 driver_t *drv; 293 const char *str = ""; 294 295 if (dev->bsddev != NULL) { 296 drv = device_get_driver(dev->bsddev); 297 if (drv != NULL) 298 str = drv->name; 299 } 300 301 return (str); 302 } 303 304 static inline void * 305 dev_get_drvdata(const struct device *dev) 306 { 307 308 return dev->driver_data; 309 } 310 311 static inline void 312 dev_set_drvdata(struct device *dev, void *data) 313 { 314 315 dev->driver_data = data; 316 } 317 318 static inline struct device * 319 get_device(struct device *dev) 320 { 321 322 if (dev) 323 kobject_get(&dev->kobj); 324 325 return (dev); 326 } 327 328 static inline char * 329 dev_name(const struct device *dev) 330 { 331 332 return kobject_name(&dev->kobj); 333 } 334 335 static inline bool 336 dev_is_removable(struct device *dev) 337 { 338 339 return (false); 340 } 341 342 #define dev_set_name(_dev, _fmt, ...) \ 343 kobject_set_name(&(_dev)->kobj, (_fmt), ##__VA_ARGS__) 344 345 static inline void 346 put_device(struct device *dev) 347 { 348 349 if (dev) 350 kobject_put(&dev->kobj); 351 } 352 353 struct class *lkpi_class_create(const char *name); 354 #if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 60400 355 #define class_create(name) lkpi_class_create(name) 356 #else 357 #define class_create(owner, name) lkpi_class_create(name) 358 #endif 359 360 static inline int 361 class_register(struct class *class) 362 { 363 364 class->bsdclass = devclass_create(class->name); 365 kobject_init(&class->kobj, &linux_class_ktype); 366 kobject_set_name(&class->kobj, class->name); 367 kobject_add(&class->kobj, &linux_class_root, class->name); 368 369 return (0); 370 } 371 372 static inline void 373 class_unregister(struct class *class) 374 { 375 376 kobject_put(&class->kobj); 377 } 378 379 static inline struct device *kobj_to_dev(struct kobject *kobj) 380 { 381 return container_of(kobj, struct device, kobj); 382 } 383 384 struct device *device_create(struct class *class, struct device *parent, 385 dev_t devt, void *drvdata, const char *fmt, ...); 386 struct device *device_create_groups_vargs(struct class *class, struct device *parent, 387 dev_t devt, void *drvdata, const struct attribute_group **groups, 388 const char *fmt, va_list args); 389 390 /* 391 * Devices are registered and created for exporting to sysfs. Create 392 * implies register and register assumes the device fields have been 393 * setup appropriately before being called. 394 */ 395 static inline void 396 device_initialize(struct device *dev) 397 { 398 device_t bsddev = NULL; 399 int unit = -1; 400 401 if (dev->devt) { 402 unit = MINOR(dev->devt); 403 bsddev = devclass_get_device(dev->class->bsdclass, unit); 404 dev->bsddev_attached_here = false; 405 } else if (dev->parent == NULL) { 406 bsddev = devclass_get_device(dev->class->bsdclass, 0); 407 dev->bsddev_attached_here = false; 408 } else { 409 dev->bsddev_attached_here = true; 410 } 411 412 if (bsddev == NULL && dev->parent != NULL) { 413 bsddev = device_add_child(dev->parent->bsddev, 414 dev->class->kobj.name, unit); 415 } 416 417 if (bsddev != NULL) 418 device_set_softc(bsddev, dev); 419 420 dev->bsddev = bsddev; 421 MPASS(dev->bsddev != NULL); 422 kobject_init(&dev->kobj, &linux_dev_ktype); 423 424 spin_lock_init(&dev->devres_lock); 425 INIT_LIST_HEAD(&dev->devres_head); 426 } 427 428 static inline int 429 device_add(struct device *dev) 430 { 431 if (dev->bsddev != NULL) { 432 if (dev->devt == 0) 433 dev->devt = makedev(0, device_get_unit(dev->bsddev)); 434 } 435 kobject_add(&dev->kobj, &dev->class->kobj, dev_name(dev)); 436 437 if (dev->groups) 438 return (sysfs_create_groups(&dev->kobj, dev->groups)); 439 440 return (0); 441 } 442 443 static inline void 444 device_create_release(struct device *dev) 445 { 446 kfree(dev); 447 } 448 449 static inline struct device * 450 device_create_with_groups(struct class *class, 451 struct device *parent, dev_t devt, void *drvdata, 452 const struct attribute_group **groups, const char *fmt, ...) 453 { 454 va_list vargs; 455 struct device *dev; 456 457 va_start(vargs, fmt); 458 dev = device_create_groups_vargs(class, parent, devt, drvdata, 459 groups, fmt, vargs); 460 va_end(vargs); 461 return dev; 462 } 463 464 static inline bool 465 device_is_registered(struct device *dev) 466 { 467 468 return (dev->bsddev != NULL); 469 } 470 471 static inline int 472 device_register(struct device *dev) 473 { 474 device_t bsddev = NULL; 475 int unit = -1; 476 477 if (device_is_registered(dev)) 478 goto done; 479 480 if (dev->devt) { 481 unit = MINOR(dev->devt); 482 bsddev = devclass_get_device(dev->class->bsdclass, unit); 483 dev->bsddev_attached_here = false; 484 } else if (dev->parent == NULL) { 485 bsddev = devclass_get_device(dev->class->bsdclass, 0); 486 dev->bsddev_attached_here = false; 487 } else { 488 dev->bsddev_attached_here = true; 489 } 490 if (bsddev == NULL && dev->parent != NULL) { 491 bsddev = device_add_child(dev->parent->bsddev, 492 dev->class->kobj.name, unit); 493 } 494 if (bsddev != NULL) { 495 if (dev->devt == 0) 496 dev->devt = makedev(0, device_get_unit(bsddev)); 497 device_set_softc(bsddev, dev); 498 } 499 dev->bsddev = bsddev; 500 done: 501 kobject_init(&dev->kobj, &linux_dev_ktype); 502 kobject_add(&dev->kobj, &dev->class->kobj, dev_name(dev)); 503 504 sysfs_create_groups(&dev->kobj, dev->class->dev_groups); 505 506 return (0); 507 } 508 509 static inline void 510 device_unregister(struct device *dev) 511 { 512 device_t bsddev; 513 514 sysfs_remove_groups(&dev->kobj, dev->class->dev_groups); 515 516 bsddev = dev->bsddev; 517 dev->bsddev = NULL; 518 519 if (bsddev != NULL && dev->bsddev_attached_here) { 520 bus_topo_lock(); 521 device_delete_child(device_get_parent(bsddev), bsddev); 522 bus_topo_unlock(); 523 } 524 put_device(dev); 525 } 526 527 static inline void 528 device_del(struct device *dev) 529 { 530 device_t bsddev; 531 532 bsddev = dev->bsddev; 533 dev->bsddev = NULL; 534 535 if (bsddev != NULL && dev->bsddev_attached_here) { 536 bus_topo_lock(); 537 device_delete_child(device_get_parent(bsddev), bsddev); 538 bus_topo_unlock(); 539 } 540 } 541 542 static inline void 543 device_destroy(struct class *class, dev_t devt) 544 { 545 device_t bsddev; 546 int unit; 547 548 unit = MINOR(devt); 549 bsddev = devclass_get_device(class->bsdclass, unit); 550 if (bsddev != NULL) 551 device_unregister(device_get_softc(bsddev)); 552 } 553 554 static inline void 555 device_release_driver(struct device *dev) 556 { 557 558 #if 0 559 /* This leads to panics. Disable temporarily. Keep to rework. */ 560 561 /* We also need to cleanup LinuxKPI bits. What else? */ 562 lkpi_devres_release_free_list(dev); 563 dev_set_drvdata(dev, NULL); 564 /* Do not call dev->release! */ 565 566 bus_topo_lock(); 567 if (device_is_attached(dev->bsddev)) 568 device_detach(dev->bsddev); 569 bus_topo_unlock(); 570 #endif 571 } 572 573 static inline int 574 device_reprobe(struct device *dev) 575 { 576 int error; 577 578 device_release_driver(dev); 579 bus_topo_lock(); 580 error = device_probe_and_attach(dev->bsddev); 581 bus_topo_unlock(); 582 583 return (-error); 584 } 585 586 static inline void 587 device_set_wakeup_enable(struct device *dev __unused, bool enable __unused) 588 { 589 590 /* 591 * XXX-BZ TODO This is used by wireless drivers supporting WoWLAN which 592 * we currently do not support. 593 */ 594 } 595 596 static inline int 597 device_wakeup_enable(struct device *dev) 598 { 599 600 device_set_wakeup_enable(dev, true); 601 return (0); 602 } 603 604 static inline bool 605 device_iommu_mapped(struct device *dev __unused) 606 { 607 return (false); 608 } 609 610 #define dev_pm_set_driver_flags(dev, flags) do { \ 611 } while (0) 612 613 static inline void 614 linux_class_kfree(struct class *class) 615 { 616 617 kfree(class); 618 } 619 620 static inline void 621 class_destroy(struct class *class) 622 { 623 624 if (class == NULL) 625 return; 626 class_unregister(class); 627 } 628 629 static inline int 630 device_create_file(struct device *dev, const struct device_attribute *attr) 631 { 632 633 if (dev) 634 return sysfs_create_file(&dev->kobj, &attr->attr); 635 return -EINVAL; 636 } 637 638 static inline void 639 device_remove_file(struct device *dev, const struct device_attribute *attr) 640 { 641 642 if (dev) 643 sysfs_remove_file(&dev->kobj, &attr->attr); 644 } 645 646 static inline int 647 class_create_file(struct class *class, const struct class_attribute *attr) 648 { 649 650 if (class) 651 return sysfs_create_file(&class->kobj, &attr->attr); 652 return -EINVAL; 653 } 654 655 static inline void 656 class_remove_file(struct class *class, const struct class_attribute *attr) 657 { 658 659 if (class) 660 sysfs_remove_file(&class->kobj, &attr->attr); 661 } 662 663 #define dev_to_node(dev) linux_dev_to_node(dev) 664 #define of_node_to_nid(node) -1 665 int linux_dev_to_node(struct device *); 666 667 char *kvasprintf(gfp_t, const char *, va_list); 668 char *kasprintf(gfp_t, const char *, ...); 669 char *lkpi_devm_kasprintf(struct device *, gfp_t, const char *, ...); 670 671 #define devm_kasprintf(_dev, _gfp, _fmt, ...) \ 672 lkpi_devm_kasprintf(_dev, _gfp, _fmt, ##__VA_ARGS__) 673 674 static __inline void * 675 devm_kmalloc(struct device *dev, size_t size, gfp_t gfp) 676 { 677 void *p; 678 679 p = lkpi_devres_alloc(lkpi_devm_kmalloc_release, size, gfp); 680 if (p != NULL) 681 lkpi_devres_add(dev, p); 682 683 return (p); 684 } 685 686 static inline void * 687 devm_kmemdup(struct device *dev, const void *src, size_t len, gfp_t gfp) 688 { 689 void *dst; 690 691 if (len == 0) 692 return (NULL); 693 694 dst = devm_kmalloc(dev, len, gfp); 695 if (dst != NULL) 696 memcpy(dst, src, len); 697 698 return (dst); 699 } 700 701 #define devm_kzalloc(_dev, _size, _gfp) \ 702 devm_kmalloc((_dev), (_size), (_gfp) | __GFP_ZERO) 703 704 #define devm_kcalloc(_dev, _sizen, _size, _gfp) \ 705 devm_kmalloc((_dev), ((_sizen) * (_size)), (_gfp) | __GFP_ZERO) 706 707 int lkpi_devm_add_action(struct device *dev, void (*action)(void *), void *data); 708 #define devm_add_action(dev, action, data) \ 709 lkpi_devm_add_action(dev, action, data); 710 int lkpi_devm_add_action_or_reset(struct device *dev, void (*action)(void *), void *data); 711 #define devm_add_action_or_reset(dev, action, data) \ 712 lkpi_devm_add_action_or_reset(dev, action, data) 713 714 int lkpi_devm_device_add_group(struct device *dev, const struct attribute_group *group); 715 #define devm_device_add_group(dev, group) \ 716 lkpi_devm_device_add_group(dev, group) 717 718 #endif /* _LINUXKPI_LINUX_DEVICE_H_ */ 719