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 <linux/device/devres.h>
52 #include <asm/atomic.h>
53
54 #include <sys/bus.h>
55 #include <sys/backlight.h>
56
57 struct device;
58
59 struct class {
60 const char *name;
61 struct kobject kobj;
62 devclass_t bsdclass;
63 const struct dev_pm_ops *pm;
64 const struct attribute_group **dev_groups;
65 void (*class_release)(struct class *class);
66 void (*dev_release)(struct device *dev);
67 char * (*devnode)(struct device *dev, umode_t *mode);
68 };
69
70 struct dev_pm_ops {
71 int (*prepare)(struct device *dev);
72 void (*complete)(struct device *dev);
73 int (*suspend)(struct device *dev);
74 int (*suspend_late)(struct device *dev);
75 int (*resume)(struct device *dev);
76 int (*resume_early)(struct device *dev);
77 int (*freeze)(struct device *dev);
78 int (*freeze_late)(struct device *dev);
79 int (*thaw)(struct device *dev);
80 int (*thaw_early)(struct device *dev);
81 int (*poweroff)(struct device *dev);
82 int (*poweroff_late)(struct device *dev);
83 int (*restore)(struct device *dev);
84 int (*restore_early)(struct device *dev);
85 int (*suspend_noirq)(struct device *dev);
86 int (*runtime_suspend)(struct device *dev);
87 int (*runtime_resume)(struct device *dev);
88 int (*runtime_idle)(struct device *dev);
89 };
90
91 struct device_driver {
92 const char *name;
93 const struct dev_pm_ops *pm;
94
95 void (*shutdown) (struct device *);
96 void (*coredump) (struct device *);
97 };
98
99 struct device_type {
100 const char *name;
101 };
102
103 struct device {
104 struct device *parent;
105 struct list_head irqents;
106 device_t bsddev;
107 /*
108 * The following flag is used to determine if the LinuxKPI is
109 * responsible for detaching the BSD device or not. If the
110 * LinuxKPI got the BSD device using devclass_get_device(), it
111 * must not try to detach or delete it, because it's already
112 * done somewhere else.
113 */
114 bool bsddev_attached_here;
115 struct device_driver *driver;
116 struct device_type *type;
117 dev_t devt;
118 struct class *class;
119 void (*release)(struct device *dev);
120 struct kobject kobj;
121 void *dma_priv;
122 void *driver_data;
123 unsigned int irq;
124 #define LINUX_IRQ_INVALID 65535
125 unsigned int irq_start;
126 unsigned int irq_end;
127 const struct attribute_group **groups;
128 struct fwnode_handle *fwnode;
129 struct cdev *backlight_dev;
130 struct backlight_device *bd;
131
132 spinlock_t devres_lock;
133 struct list_head devres_head;
134
135 struct dev_pm_info power;
136 };
137
138 extern struct device linux_root_device;
139 extern struct kobject linux_class_root;
140 extern const struct kobj_type linux_dev_ktype;
141 extern const struct kobj_type linux_class_ktype;
142
143 struct class_attribute {
144 struct attribute attr;
145 ssize_t (*show)(struct class *, struct class_attribute *, char *);
146 ssize_t (*store)(struct class *, struct class_attribute *, const char *, size_t);
147 const void *(*namespace)(struct class *, const struct class_attribute *);
148 };
149
150 #define CLASS_ATTR(_name, _mode, _show, _store) \
151 struct class_attribute class_attr_##_name = \
152 { { #_name, NULL, _mode }, _show, _store }
153
154 struct device_attribute {
155 struct attribute attr;
156 ssize_t (*show)(struct device *,
157 struct device_attribute *, char *);
158 ssize_t (*store)(struct device *,
159 struct device_attribute *, const char *,
160 size_t);
161 };
162
163 #define DEVICE_ATTR(_name, _mode, _show, _store) \
164 struct device_attribute dev_attr_##_name = \
165 __ATTR(_name, _mode, _show, _store)
166 #define DEVICE_ATTR_RO(_name) \
167 struct device_attribute dev_attr_##_name = __ATTR_RO(_name)
168 #define DEVICE_ATTR_WO(_name) \
169 struct device_attribute dev_attr_##_name = __ATTR_WO(_name)
170 #define DEVICE_ATTR_RW(_name) \
171 struct device_attribute dev_attr_##_name = __ATTR_RW(_name)
172
173 /* Simple class attribute that is just a static string */
174 struct class_attribute_string {
175 struct class_attribute attr;
176 char *str;
177 };
178
179 static inline ssize_t
show_class_attr_string(struct class * class,struct class_attribute * attr,char * buf)180 show_class_attr_string(struct class *class,
181 struct class_attribute *attr, char *buf)
182 {
183 struct class_attribute_string *cs;
184 cs = container_of(attr, struct class_attribute_string, attr);
185 return snprintf(buf, PAGE_SIZE, "%s\n", cs->str);
186 }
187
188 /* Currently read-only only */
189 #define _CLASS_ATTR_STRING(_name, _mode, _str) \
190 { __ATTR(_name, _mode, show_class_attr_string, NULL), _str }
191 #define CLASS_ATTR_STRING(_name, _mode, _str) \
192 struct class_attribute_string class_attr_##_name = \
193 _CLASS_ATTR_STRING(_name, _mode, _str)
194
195 #define dev_printk(lvl, dev, fmt, ...) \
196 device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
197
198 #define dev_emerg(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
199 #define dev_alert(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
200 #define dev_crit(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
201 #define dev_err(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
202 #define dev_warn(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
203 #define dev_notice(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
204 #define dev_info(dev, fmt, ...) device_printf((dev)->bsddev, fmt, ##__VA_ARGS__)
205 #define dev_dbg(dev, fmt, ...) do { } while (0)
206
207 #define dev_WARN(dev, fmt, ...) \
208 device_printf((dev)->bsddev, "%s:%d: " fmt, __func__, __LINE__, ##__VA_ARGS__)
209
210 #define dev_WARN_ONCE(dev, condition, fmt, ...) do { \
211 static bool __dev_WARN_ONCE; \
212 bool __ret_warn_on = (condition); \
213 if (unlikely(__ret_warn_on)) { \
214 if (!__dev_WARN_ONCE) { \
215 __dev_WARN_ONCE = true; \
216 device_printf((dev)->bsddev, "%s:%d: " fmt, __func__, __LINE__, ##__VA_ARGS__); \
217 } \
218 } \
219 } while (0)
220
221 #define dev_info_once(dev, ...) do { \
222 static bool __dev_info_once; \
223 if (!__dev_info_once) { \
224 __dev_info_once = true; \
225 dev_info(dev, __VA_ARGS__); \
226 } \
227 } while (0)
228
229 #define dev_warn_once(dev, ...) do { \
230 static bool __dev_warn_once; \
231 if (!__dev_warn_once) { \
232 __dev_warn_once = 1; \
233 dev_warn(dev, __VA_ARGS__); \
234 } \
235 } while (0)
236
237 #define dev_err_once(dev, ...) do { \
238 static bool __dev_err_once; \
239 if (!__dev_err_once) { \
240 __dev_err_once = 1; \
241 dev_err(dev, __VA_ARGS__); \
242 } \
243 } while (0)
244
245 #define dev_dbg_once(dev, ...) do { \
246 static bool __dev_dbg_once; \
247 if (!__dev_dbg_once) { \
248 __dev_dbg_once = 1; \
249 dev_dbg(dev, __VA_ARGS__); \
250 } \
251 } while (0)
252
253 #define dev_err_ratelimited(dev, ...) do { \
254 static linux_ratelimit_t __ratelimited; \
255 if (linux_ratelimited(&__ratelimited)) \
256 dev_err(dev, __VA_ARGS__); \
257 } while (0)
258
259 #define dev_warn_ratelimited(dev, ...) do { \
260 static linux_ratelimit_t __ratelimited; \
261 if (linux_ratelimited(&__ratelimited)) \
262 dev_warn(dev, __VA_ARGS__); \
263 } while (0)
264
265 #define dev_dbg_ratelimited(dev, ...) do { \
266 static linux_ratelimit_t __ratelimited; \
267 if (linux_ratelimited(&__ratelimited)) \
268 dev_dbg(dev, __VA_ARGS__); \
269 } while (0)
270
271 static inline int
dev_err_probe(const struct device * dev,int err,const char * fmt,...)272 dev_err_probe(const struct device *dev, int err, const char *fmt, ...)
273 {
274 va_list args;
275
276 va_start(args, fmt);
277
278 /*
279 * On Linux, they look at the error code to determine if the message
280 * should be logged (not logged if -ENOMEM) and at which log level.
281 */
282 device_printf(dev->bsddev, fmt, args);
283
284 va_end(args);
285
286 return (err);
287 }
288
289 #define dev_err_ptr_probe(dev, err, fmt, ...) \
290 ERR_PTR(dev_err_probe((dev), (err), fmt, ##__VA_ARGS__)
291
292 #define dev_err_cast_probe(dev, err, fmt, ...) \
293 ERR_PTR(dev_err_probe((dev), PTR_ERR(err), fmt, ##__VA_ARGS__)
294
295 void lkpi_devres_release_free_list(struct device *);
296 void lkpi_devres_unlink(struct device *, void *);
297
298 static inline const char *
dev_driver_string(const struct device * dev)299 dev_driver_string(const struct device *dev)
300 {
301 driver_t *drv;
302 const char *str = "";
303
304 if (dev->bsddev != NULL) {
305 drv = device_get_driver(dev->bsddev);
306 if (drv != NULL)
307 str = drv->name;
308 }
309
310 return (str);
311 }
312
313 static inline void *
dev_get_drvdata(const struct device * dev)314 dev_get_drvdata(const struct device *dev)
315 {
316
317 return dev->driver_data;
318 }
319
320 static inline void
dev_set_drvdata(struct device * dev,void * data)321 dev_set_drvdata(struct device *dev, void *data)
322 {
323
324 dev->driver_data = data;
325 }
326
327 static inline struct device *
get_device(struct device * dev)328 get_device(struct device *dev)
329 {
330
331 if (dev)
332 kobject_get(&dev->kobj);
333
334 return (dev);
335 }
336
337 static inline char *
dev_name(const struct device * dev)338 dev_name(const struct device *dev)
339 {
340
341 return kobject_name(&dev->kobj);
342 }
343
344 static inline bool
dev_is_removable(struct device * dev)345 dev_is_removable(struct device *dev)
346 {
347
348 return (false);
349 }
350
351 #define dev_set_name(_dev, _fmt, ...) \
352 kobject_set_name(&(_dev)->kobj, (_fmt), ##__VA_ARGS__)
353
354 static inline void
put_device(struct device * dev)355 put_device(struct device *dev)
356 {
357
358 if (dev)
359 kobject_put(&dev->kobj);
360 }
361
362 struct class *lkpi_class_create(const char *name);
363 #if defined(LINUXKPI_VERSION) && LINUXKPI_VERSION >= 60400
364 #define class_create(name) lkpi_class_create(name)
365 #else
366 #define class_create(owner, name) lkpi_class_create(name)
367 #endif
368
369 static inline int
class_register(struct class * class)370 class_register(struct class *class)
371 {
372
373 class->bsdclass = devclass_create(class->name);
374 kobject_init(&class->kobj, &linux_class_ktype);
375 kobject_set_name(&class->kobj, class->name);
376 kobject_add(&class->kobj, &linux_class_root, class->name);
377
378 return (0);
379 }
380
381 static inline void
class_unregister(struct class * class)382 class_unregister(struct class *class)
383 {
384
385 kobject_put(&class->kobj);
386 }
387
kobj_to_dev(struct kobject * kobj)388 static inline struct device *kobj_to_dev(struct kobject *kobj)
389 {
390 return container_of(kobj, struct device, kobj);
391 }
392
393 struct device *device_create(struct class *class, struct device *parent,
394 dev_t devt, void *drvdata, const char *fmt, ...);
395 struct device *device_create_groups_vargs(struct class *class, struct device *parent,
396 dev_t devt, void *drvdata, const struct attribute_group **groups,
397 const char *fmt, va_list args);
398
399 /*
400 * Devices are registered and created for exporting to sysfs. Create
401 * implies register and register assumes the device fields have been
402 * setup appropriately before being called.
403 */
404 static inline void
device_initialize(struct device * dev)405 device_initialize(struct device *dev)
406 {
407 device_t bsddev = NULL;
408 int unit = -1;
409
410 if (dev->devt) {
411 unit = MINOR(dev->devt);
412 bsddev = devclass_get_device(dev->class->bsdclass, unit);
413 dev->bsddev_attached_here = false;
414 } else if (dev->parent == NULL) {
415 bsddev = devclass_get_device(dev->class->bsdclass, 0);
416 dev->bsddev_attached_here = false;
417 } else {
418 dev->bsddev_attached_here = true;
419 }
420
421 if (bsddev == NULL && dev->parent != NULL) {
422 bsddev = device_add_child(dev->parent->bsddev,
423 dev->class->kobj.name, unit);
424 }
425
426 if (bsddev != NULL)
427 device_set_softc(bsddev, dev);
428
429 dev->bsddev = bsddev;
430 MPASS(dev->bsddev != NULL);
431 kobject_init(&dev->kobj, &linux_dev_ktype);
432
433 spin_lock_init(&dev->devres_lock);
434 INIT_LIST_HEAD(&dev->devres_head);
435 }
436
437 static inline int
device_add(struct device * dev)438 device_add(struct device *dev)
439 {
440 if (dev->bsddev != NULL) {
441 if (dev->devt == 0)
442 dev->devt = makedev(0, device_get_unit(dev->bsddev));
443 }
444
445 /*
446 * Do not change:
447 * the specific location is used by IB user space tools (PR298485).
448 */
449 kobject_add(&dev->kobj, &dev->class->kobj, dev_name(dev));
450
451 if (dev->groups)
452 return (sysfs_create_groups(&dev->kobj, dev->groups));
453
454 return (0);
455 }
456
457 static inline void
device_create_release(struct device * dev)458 device_create_release(struct device *dev)
459 {
460 kfree(dev);
461 }
462
463 static inline struct device *
device_create_with_groups(struct class * class,struct device * parent,dev_t devt,void * drvdata,const struct attribute_group ** groups,const char * fmt,...)464 device_create_with_groups(struct class *class,
465 struct device *parent, dev_t devt, void *drvdata,
466 const struct attribute_group **groups, const char *fmt, ...)
467 {
468 va_list vargs;
469 struct device *dev;
470
471 va_start(vargs, fmt);
472 dev = device_create_groups_vargs(class, parent, devt, drvdata,
473 groups, fmt, vargs);
474 va_end(vargs);
475 return dev;
476 }
477
478 static inline bool
device_is_registered(struct device * dev)479 device_is_registered(struct device *dev)
480 {
481
482 return (dev->bsddev != NULL);
483 }
484
485 static inline int
device_register(struct device * dev)486 device_register(struct device *dev)
487 {
488 device_t bsddev = NULL;
489 int unit = -1;
490
491 if (device_is_registered(dev))
492 goto done;
493
494 if (dev->devt) {
495 unit = MINOR(dev->devt);
496 bsddev = devclass_get_device(dev->class->bsdclass, unit);
497 dev->bsddev_attached_here = false;
498 } else if (dev->parent == NULL) {
499 bsddev = devclass_get_device(dev->class->bsdclass, 0);
500 dev->bsddev_attached_here = false;
501 } else {
502 dev->bsddev_attached_here = true;
503 }
504 if (bsddev == NULL && dev->parent != NULL) {
505 bsddev = device_add_child(dev->parent->bsddev,
506 dev->class->kobj.name, unit);
507 }
508 if (bsddev != NULL) {
509 if (dev->devt == 0)
510 dev->devt = makedev(0, device_get_unit(bsddev));
511 device_set_softc(bsddev, dev);
512 }
513 dev->bsddev = bsddev;
514 done:
515 kobject_init(&dev->kobj, &linux_dev_ktype);
516 kobject_add(&dev->kobj, &dev->class->kobj, dev_name(dev));
517
518 sysfs_create_groups(&dev->kobj, dev->class->dev_groups);
519
520 return (0);
521 }
522
523 static inline void
device_unregister(struct device * dev)524 device_unregister(struct device *dev)
525 {
526 device_t bsddev;
527
528 sysfs_remove_groups(&dev->kobj, dev->class->dev_groups);
529
530 bsddev = dev->bsddev;
531 dev->bsddev = NULL;
532
533 if (bsddev != NULL && dev->bsddev_attached_here) {
534 bus_topo_lock();
535 device_delete_child(device_get_parent(bsddev), bsddev);
536 bus_topo_unlock();
537 }
538 put_device(dev);
539 }
540
541 static inline void
device_del(struct device * dev)542 device_del(struct device *dev)
543 {
544 device_t bsddev;
545
546 bsddev = dev->bsddev;
547 dev->bsddev = NULL;
548
549 if (bsddev != NULL && dev->bsddev_attached_here) {
550 bus_topo_lock();
551 device_delete_child(device_get_parent(bsddev), bsddev);
552 bus_topo_unlock();
553 }
554 }
555
556 static inline void
device_destroy(struct class * class,dev_t devt)557 device_destroy(struct class *class, dev_t devt)
558 {
559 device_t bsddev;
560 int unit;
561
562 unit = MINOR(devt);
563 bsddev = devclass_get_device(class->bsdclass, unit);
564 if (bsddev != NULL)
565 device_unregister(device_get_softc(bsddev));
566 }
567
568 static inline void
device_release_driver(struct device * dev)569 device_release_driver(struct device *dev)
570 {
571
572 pr_debug("%s: TODO\n", __func__);
573 #if 0
574 /* This leads to panics. Disable temporarily. Keep to rework. */
575
576 /* We also need to cleanup LinuxKPI bits. What else? */
577 lkpi_devres_release_free_list(dev);
578 dev_set_drvdata(dev, NULL);
579 /* Do not call dev->release! */
580
581 bus_topo_lock();
582 if (device_is_attached(dev->bsddev))
583 device_detach(dev->bsddev);
584 bus_topo_unlock();
585 #endif
586 }
587
588 static inline int
device_reprobe(struct device * dev)589 device_reprobe(struct device *dev)
590 {
591 int error;
592
593 device_release_driver(dev);
594 bus_topo_lock();
595 error = device_probe_and_attach(dev->bsddev);
596 bus_topo_unlock();
597
598 return (-error);
599 }
600
601 static inline void
device_set_wakeup_enable(struct device * dev __unused,bool enable __unused)602 device_set_wakeup_enable(struct device *dev __unused, bool enable __unused)
603 {
604
605 /*
606 * XXX-BZ TODO This is used by wireless drivers supporting WoWLAN which
607 * we currently do not support.
608 */
609 }
610
611 static inline int
device_wakeup_enable(struct device * dev)612 device_wakeup_enable(struct device *dev)
613 {
614
615 device_set_wakeup_enable(dev, true);
616 return (0);
617 }
618
619 static inline bool
device_iommu_mapped(struct device * dev __unused)620 device_iommu_mapped(struct device *dev __unused)
621 {
622 return (false);
623 }
624
625 #define dev_pm_set_driver_flags(dev, flags) do { \
626 } while (0)
627
628 static inline void
linux_class_kfree(struct class * class)629 linux_class_kfree(struct class *class)
630 {
631
632 kfree(class);
633 }
634
635 static inline void
class_destroy(struct class * class)636 class_destroy(struct class *class)
637 {
638
639 if (class == NULL)
640 return;
641 class_unregister(class);
642 }
643
644 static inline int
device_create_file(struct device * dev,const struct device_attribute * attr)645 device_create_file(struct device *dev, const struct device_attribute *attr)
646 {
647
648 if (dev)
649 return sysfs_create_file(&dev->kobj, &attr->attr);
650 return -EINVAL;
651 }
652
653 static inline void
device_remove_file(struct device * dev,const struct device_attribute * attr)654 device_remove_file(struct device *dev, const struct device_attribute *attr)
655 {
656
657 if (dev)
658 sysfs_remove_file(&dev->kobj, &attr->attr);
659 }
660
661 static inline int
class_create_file(struct class * class,const struct class_attribute * attr)662 class_create_file(struct class *class, const struct class_attribute *attr)
663 {
664
665 if (class)
666 return sysfs_create_file(&class->kobj, &attr->attr);
667 return -EINVAL;
668 }
669
670 static inline void
class_remove_file(struct class * class,const struct class_attribute * attr)671 class_remove_file(struct class *class, const struct class_attribute *attr)
672 {
673
674 if (class)
675 sysfs_remove_file(&class->kobj, &attr->attr);
676 }
677
678 #define dev_to_node(dev) linux_dev_to_node(dev)
679 #define of_node_to_nid(node) -1
680 int linux_dev_to_node(struct device *);
681
682 char *kvasprintf(gfp_t, const char *, va_list);
683 char *kasprintf(gfp_t, const char *, ...);
684 char *lkpi_devm_kasprintf(struct device *, gfp_t, const char *, ...);
685
686 #define devm_kasprintf(_dev, _gfp, _fmt, ...) \
687 lkpi_devm_kasprintf(_dev, _gfp, _fmt, ##__VA_ARGS__)
688
689 #define devm_kzalloc(_dev, _size, _gfp) \
690 devm_kmalloc((_dev), (_size), (_gfp) | __GFP_ZERO)
691
692 #define devm_kcalloc(_dev, _sizen, _size, _gfp) \
693 devm_kmalloc((_dev), ((_sizen) * (_size)), (_gfp) | __GFP_ZERO)
694
695 int lkpi_devm_add_action(struct device *dev, void (*action)(void *), void *data);
696 #define devm_add_action(dev, action, data) \
697 lkpi_devm_add_action(dev, action, data);
698 int lkpi_devm_add_action_or_reset(struct device *dev, void (*action)(void *), void *data);
699 #define devm_add_action_or_reset(dev, action, data) \
700 lkpi_devm_add_action_or_reset(dev, action, data)
701
702 int lkpi_devm_device_add_group(struct device *dev, const struct attribute_group *group);
703 #define devm_device_add_group(dev, group) \
704 lkpi_devm_device_add_group(dev, group)
705
706 #endif /* _LINUXKPI_LINUX_DEVICE_H_ */
707