Commit | Line | Data |
---|---|---|
3e9b4a5e | 1 | /* |
759d5768 | 2 | * Copyright (c) 2006 QLogic, Inc. All rights reserved. |
3e9b4a5e BS |
3 | * Copyright (c) 2006 PathScale, Inc. All rights reserved. |
4 | * | |
5 | * This software is available to you under a choice of one of two | |
6 | * licenses. You may choose to be licensed under the terms of the GNU | |
7 | * General Public License (GPL) Version 2, available from the file | |
8 | * COPYING in the main directory of this source tree, or the | |
9 | * OpenIB.org BSD license below: | |
10 | * | |
11 | * Redistribution and use in source and binary forms, with or | |
12 | * without modification, are permitted provided that the following | |
13 | * conditions are met: | |
14 | * | |
15 | * - Redistributions of source code must retain the above | |
16 | * copyright notice, this list of conditions and the following | |
17 | * disclaimer. | |
18 | * | |
19 | * - Redistributions in binary form must reproduce the above | |
20 | * copyright notice, this list of conditions and the following | |
21 | * disclaimer in the documentation and/or other materials | |
22 | * provided with the distribution. | |
23 | * | |
24 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
25 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
26 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
27 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
28 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
29 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
30 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
31 | * SOFTWARE. | |
32 | */ | |
33 | ||
34 | #include <linux/version.h> | |
3e9b4a5e BS |
35 | #include <linux/module.h> |
36 | #include <linux/fs.h> | |
37 | #include <linux/mount.h> | |
38 | #include <linux/pagemap.h> | |
39 | #include <linux/init.h> | |
40 | #include <linux/namei.h> | |
41 | #include <linux/pci.h> | |
42 | ||
43 | #include "ipath_kernel.h" | |
44 | ||
45 | #define IPATHFS_MAGIC 0x726a77 | |
46 | ||
47 | static struct super_block *ipath_super; | |
48 | ||
49 | static int ipathfs_mknod(struct inode *dir, struct dentry *dentry, | |
2b8693c0 | 50 | int mode, const struct file_operations *fops, |
3e9b4a5e BS |
51 | void *data) |
52 | { | |
53 | int error; | |
54 | struct inode *inode = new_inode(dir->i_sb); | |
55 | ||
56 | if (!inode) { | |
57 | error = -EPERM; | |
58 | goto bail; | |
59 | } | |
60 | ||
61 | inode->i_mode = mode; | |
62 | inode->i_uid = 0; | |
63 | inode->i_gid = 0; | |
3e9b4a5e BS |
64 | inode->i_blocks = 0; |
65 | inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME; | |
8e18e294 | 66 | inode->i_private = data; |
3e9b4a5e BS |
67 | if ((mode & S_IFMT) == S_IFDIR) { |
68 | inode->i_op = &simple_dir_inode_operations; | |
d8c76e6f DH |
69 | inc_nlink(inode); |
70 | inc_nlink(dir); | |
3e9b4a5e BS |
71 | } |
72 | ||
73 | inode->i_fop = fops; | |
74 | ||
75 | d_instantiate(dentry, inode); | |
76 | error = 0; | |
77 | ||
78 | bail: | |
79 | return error; | |
80 | } | |
81 | ||
82 | static int create_file(const char *name, mode_t mode, | |
83 | struct dentry *parent, struct dentry **dentry, | |
2b8693c0 | 84 | const struct file_operations *fops, void *data) |
3e9b4a5e BS |
85 | { |
86 | int error; | |
87 | ||
88 | *dentry = NULL; | |
89 | mutex_lock(&parent->d_inode->i_mutex); | |
90 | *dentry = lookup_one_len(name, parent, strlen(name)); | |
91 | if (!IS_ERR(dentry)) | |
92 | error = ipathfs_mknod(parent->d_inode, *dentry, | |
93 | mode, fops, data); | |
94 | else | |
95 | error = PTR_ERR(dentry); | |
96 | mutex_unlock(&parent->d_inode->i_mutex); | |
97 | ||
98 | return error; | |
99 | } | |
100 | ||
101 | static ssize_t atomic_stats_read(struct file *file, char __user *buf, | |
102 | size_t count, loff_t *ppos) | |
103 | { | |
104 | return simple_read_from_buffer(buf, count, ppos, &ipath_stats, | |
105 | sizeof ipath_stats); | |
106 | } | |
107 | ||
2b8693c0 | 108 | static const struct file_operations atomic_stats_ops = { |
3e9b4a5e BS |
109 | .read = atomic_stats_read, |
110 | }; | |
111 | ||
112 | #define NUM_COUNTERS sizeof(struct infinipath_counters) / sizeof(u64) | |
113 | ||
114 | static ssize_t atomic_counters_read(struct file *file, char __user *buf, | |
115 | size_t count, loff_t *ppos) | |
116 | { | |
117 | u64 counters[NUM_COUNTERS]; | |
118 | u16 i; | |
119 | struct ipath_devdata *dd; | |
120 | ||
1cfd6e64 | 121 | dd = file->f_path.dentry->d_inode->i_private; |
3e9b4a5e BS |
122 | |
123 | for (i = 0; i < NUM_COUNTERS; i++) | |
124 | counters[i] = ipath_snap_cntr(dd, i); | |
125 | ||
126 | return simple_read_from_buffer(buf, count, ppos, counters, | |
127 | sizeof counters); | |
128 | } | |
129 | ||
2b8693c0 | 130 | static const struct file_operations atomic_counters_ops = { |
3e9b4a5e BS |
131 | .read = atomic_counters_read, |
132 | }; | |
133 | ||
134 | static ssize_t atomic_node_info_read(struct file *file, char __user *buf, | |
135 | size_t count, loff_t *ppos) | |
136 | { | |
137 | u32 nodeinfo[10]; | |
138 | struct ipath_devdata *dd; | |
139 | u64 guid; | |
140 | ||
1cfd6e64 | 141 | dd = file->f_path.dentry->d_inode->i_private; |
3e9b4a5e BS |
142 | |
143 | guid = be64_to_cpu(dd->ipath_guid); | |
144 | ||
145 | nodeinfo[0] = /* BaseVersion is SMA */ | |
146 | /* ClassVersion is SMA */ | |
147 | (1 << 8) /* NodeType */ | |
148 | | (1 << 0); /* NumPorts */ | |
149 | nodeinfo[1] = (u32) (guid >> 32); | |
150 | nodeinfo[2] = (u32) (guid & 0xffffffff); | |
151 | /* PortGUID == SystemImageGUID for us */ | |
152 | nodeinfo[3] = nodeinfo[1]; | |
153 | /* PortGUID == SystemImageGUID for us */ | |
154 | nodeinfo[4] = nodeinfo[2]; | |
155 | /* PortGUID == NodeGUID for us */ | |
156 | nodeinfo[5] = nodeinfo[3]; | |
157 | /* PortGUID == NodeGUID for us */ | |
158 | nodeinfo[6] = nodeinfo[4]; | |
159 | nodeinfo[7] = (4 << 16) /* we support 4 pkeys */ | |
160 | | (dd->ipath_deviceid << 0); | |
161 | /* our chip version as 16 bits major, 16 bits minor */ | |
162 | nodeinfo[8] = dd->ipath_minrev | (dd->ipath_majrev << 16); | |
163 | nodeinfo[9] = (dd->ipath_unit << 24) | (dd->ipath_vendorid << 0); | |
164 | ||
165 | return simple_read_from_buffer(buf, count, ppos, nodeinfo, | |
166 | sizeof nodeinfo); | |
167 | } | |
168 | ||
2b8693c0 | 169 | static const struct file_operations atomic_node_info_ops = { |
3e9b4a5e BS |
170 | .read = atomic_node_info_read, |
171 | }; | |
172 | ||
173 | static ssize_t atomic_port_info_read(struct file *file, char __user *buf, | |
174 | size_t count, loff_t *ppos) | |
175 | { | |
176 | u32 portinfo[13]; | |
177 | u32 tmp, tmp2; | |
178 | struct ipath_devdata *dd; | |
179 | ||
1cfd6e64 | 180 | dd = file->f_path.dentry->d_inode->i_private; |
3e9b4a5e BS |
181 | |
182 | /* so we only initialize non-zero fields. */ | |
183 | memset(portinfo, 0, sizeof portinfo); | |
184 | ||
185 | /* | |
186 | * Notimpl yet M_Key (64) | |
187 | * Notimpl yet GID (64) | |
188 | */ | |
189 | ||
190 | portinfo[4] = (dd->ipath_lid << 16); | |
191 | ||
192 | /* | |
0fd41363 BS |
193 | * Notimpl yet SMLID. |
194 | * CapabilityMask is 0, we don't support any of these | |
3e9b4a5e BS |
195 | * DiagCode is 0; we don't store any diag info for now Notimpl yet |
196 | * M_KeyLeasePeriod (we don't support M_Key) | |
197 | */ | |
198 | ||
199 | /* LocalPortNum is whichever port number they ask for */ | |
200 | portinfo[7] = (dd->ipath_unit << 24) | |
201 | /* LinkWidthEnabled */ | |
202 | | (2 << 16) | |
203 | /* LinkWidthSupported (really 2, but not IB valid) */ | |
204 | | (3 << 8) | |
205 | /* LinkWidthActive */ | |
206 | | (2 << 0); | |
207 | tmp = dd->ipath_lastibcstat & IPATH_IBSTATE_MASK; | |
208 | tmp2 = 5; | |
209 | if (tmp == IPATH_IBSTATE_INIT) | |
210 | tmp = 2; | |
211 | else if (tmp == IPATH_IBSTATE_ARM) | |
212 | tmp = 3; | |
213 | else if (tmp == IPATH_IBSTATE_ACTIVE) | |
214 | tmp = 4; | |
215 | else { | |
216 | tmp = 0; /* down */ | |
217 | tmp2 = tmp & 0xf; | |
218 | } | |
219 | ||
220 | portinfo[8] = (1 << 28) /* LinkSpeedSupported */ | |
221 | | (tmp << 24) /* PortState */ | |
222 | | (tmp2 << 20) /* PortPhysicalState */ | |
223 | | (2 << 16) | |
224 | ||
225 | /* LinkDownDefaultState */ | |
226 | /* M_KeyProtectBits == 0 */ | |
227 | /* NotImpl yet LMC == 0 (we can support all values) */ | |
228 | | (1 << 4) /* LinkSpeedActive */ | |
229 | | (1 << 0); /* LinkSpeedEnabled */ | |
230 | switch (dd->ipath_ibmtu) { | |
231 | case 4096: | |
232 | tmp = 5; | |
233 | break; | |
234 | case 2048: | |
235 | tmp = 4; | |
236 | break; | |
237 | case 1024: | |
238 | tmp = 3; | |
239 | break; | |
240 | case 512: | |
241 | tmp = 2; | |
242 | break; | |
243 | case 256: | |
244 | tmp = 1; | |
245 | break; | |
246 | default: /* oops, something is wrong */ | |
247 | ipath_dbg("Problem, ipath_ibmtu 0x%x not a valid IB MTU, " | |
248 | "treat as 2048\n", dd->ipath_ibmtu); | |
249 | tmp = 4; | |
250 | break; | |
251 | } | |
252 | portinfo[9] = (tmp << 28) | |
253 | /* NeighborMTU */ | |
254 | /* Notimpl MasterSMSL */ | |
255 | | (1 << 20) | |
256 | ||
257 | /* VLCap */ | |
258 | /* Notimpl InitType (actually, an SMA decision) */ | |
259 | /* VLHighLimit is 0 (only one VL) */ | |
260 | ; /* VLArbitrationHighCap is 0 (only one VL) */ | |
261 | portinfo[10] = /* VLArbitrationLowCap is 0 (only one VL) */ | |
262 | /* InitTypeReply is SMA decision */ | |
263 | (5 << 16) /* MTUCap 4096 */ | |
264 | | (7 << 13) /* VLStallCount */ | |
265 | | (0x1f << 8) /* HOQLife */ | |
266 | | (1 << 4) | |
267 | ||
268 | /* OperationalVLs 0 */ | |
269 | /* PartitionEnforcementInbound */ | |
270 | /* PartitionEnforcementOutbound not enforced */ | |
271 | /* FilterRawinbound not enforced */ | |
272 | ; /* FilterRawOutbound not enforced */ | |
273 | /* M_KeyViolations are not counted by hardware, SMA can count */ | |
274 | tmp = ipath_read_creg32(dd, dd->ipath_cregs->cr_errpkey); | |
275 | /* P_KeyViolations are counted by hardware. */ | |
276 | portinfo[11] = ((tmp & 0xffff) << 0); | |
277 | portinfo[12] = | |
278 | /* Q_KeyViolations are not counted by hardware */ | |
279 | (1 << 8) | |
280 | ||
281 | /* GUIDCap */ | |
282 | /* SubnetTimeOut handled by SMA */ | |
283 | /* RespTimeValue handled by SMA */ | |
284 | ; | |
285 | /* LocalPhyErrors are programmed to max */ | |
286 | portinfo[12] |= (0xf << 20) | |
287 | | (0xf << 16) /* OverRunErrors are programmed to max */ | |
288 | ; | |
289 | ||
290 | return simple_read_from_buffer(buf, count, ppos, portinfo, | |
291 | sizeof portinfo); | |
292 | } | |
293 | ||
2b8693c0 | 294 | static const struct file_operations atomic_port_info_ops = { |
3e9b4a5e BS |
295 | .read = atomic_port_info_read, |
296 | }; | |
297 | ||
298 | static ssize_t flash_read(struct file *file, char __user *buf, | |
299 | size_t count, loff_t *ppos) | |
300 | { | |
301 | struct ipath_devdata *dd; | |
302 | ssize_t ret; | |
303 | loff_t pos; | |
304 | char *tmp; | |
305 | ||
306 | pos = *ppos; | |
307 | ||
308 | if ( pos < 0) { | |
309 | ret = -EINVAL; | |
310 | goto bail; | |
311 | } | |
312 | ||
313 | if (pos >= sizeof(struct ipath_flash)) { | |
314 | ret = 0; | |
315 | goto bail; | |
316 | } | |
317 | ||
318 | if (count > sizeof(struct ipath_flash) - pos) | |
319 | count = sizeof(struct ipath_flash) - pos; | |
320 | ||
321 | tmp = kmalloc(count, GFP_KERNEL); | |
322 | if (!tmp) { | |
323 | ret = -ENOMEM; | |
324 | goto bail; | |
325 | } | |
326 | ||
1cfd6e64 | 327 | dd = file->f_path.dentry->d_inode->i_private; |
3e9b4a5e BS |
328 | if (ipath_eeprom_read(dd, pos, tmp, count)) { |
329 | ipath_dev_err(dd, "failed to read from flash\n"); | |
330 | ret = -ENXIO; | |
331 | goto bail_tmp; | |
332 | } | |
333 | ||
334 | if (copy_to_user(buf, tmp, count)) { | |
335 | ret = -EFAULT; | |
336 | goto bail_tmp; | |
337 | } | |
338 | ||
339 | *ppos = pos + count; | |
340 | ret = count; | |
341 | ||
342 | bail_tmp: | |
343 | kfree(tmp); | |
344 | ||
345 | bail: | |
346 | return ret; | |
347 | } | |
348 | ||
349 | static ssize_t flash_write(struct file *file, const char __user *buf, | |
350 | size_t count, loff_t *ppos) | |
351 | { | |
352 | struct ipath_devdata *dd; | |
353 | ssize_t ret; | |
354 | loff_t pos; | |
355 | char *tmp; | |
356 | ||
357 | pos = *ppos; | |
358 | ||
7dae5bff | 359 | if (pos != 0) { |
3e9b4a5e BS |
360 | ret = -EINVAL; |
361 | goto bail; | |
362 | } | |
363 | ||
7dae5bff BS |
364 | if (count != sizeof(struct ipath_flash)) { |
365 | ret = -EINVAL; | |
3e9b4a5e BS |
366 | goto bail; |
367 | } | |
368 | ||
3e9b4a5e BS |
369 | tmp = kmalloc(count, GFP_KERNEL); |
370 | if (!tmp) { | |
371 | ret = -ENOMEM; | |
372 | goto bail; | |
373 | } | |
374 | ||
375 | if (copy_from_user(tmp, buf, count)) { | |
376 | ret = -EFAULT; | |
377 | goto bail_tmp; | |
378 | } | |
379 | ||
1cfd6e64 | 380 | dd = file->f_path.dentry->d_inode->i_private; |
3e9b4a5e BS |
381 | if (ipath_eeprom_write(dd, pos, tmp, count)) { |
382 | ret = -ENXIO; | |
383 | ipath_dev_err(dd, "failed to write to flash\n"); | |
384 | goto bail_tmp; | |
385 | } | |
386 | ||
387 | *ppos = pos + count; | |
388 | ret = count; | |
389 | ||
390 | bail_tmp: | |
391 | kfree(tmp); | |
392 | ||
393 | bail: | |
394 | return ret; | |
395 | } | |
396 | ||
2b8693c0 | 397 | static const struct file_operations flash_ops = { |
3e9b4a5e BS |
398 | .read = flash_read, |
399 | .write = flash_write, | |
400 | }; | |
401 | ||
402 | static int create_device_files(struct super_block *sb, | |
403 | struct ipath_devdata *dd) | |
404 | { | |
405 | struct dentry *dir, *tmp; | |
406 | char unit[10]; | |
407 | int ret; | |
408 | ||
409 | snprintf(unit, sizeof unit, "%02d", dd->ipath_unit); | |
410 | ret = create_file(unit, S_IFDIR|S_IRUGO|S_IXUGO, sb->s_root, &dir, | |
411 | (struct file_operations *) &simple_dir_operations, | |
412 | dd); | |
413 | if (ret) { | |
414 | printk(KERN_ERR "create_file(%s) failed: %d\n", unit, ret); | |
415 | goto bail; | |
416 | } | |
417 | ||
418 | ret = create_file("atomic_counters", S_IFREG|S_IRUGO, dir, &tmp, | |
419 | &atomic_counters_ops, dd); | |
420 | if (ret) { | |
421 | printk(KERN_ERR "create_file(%s/atomic_counters) " | |
422 | "failed: %d\n", unit, ret); | |
423 | goto bail; | |
424 | } | |
425 | ||
426 | ret = create_file("node_info", S_IFREG|S_IRUGO, dir, &tmp, | |
427 | &atomic_node_info_ops, dd); | |
428 | if (ret) { | |
429 | printk(KERN_ERR "create_file(%s/node_info) " | |
430 | "failed: %d\n", unit, ret); | |
431 | goto bail; | |
432 | } | |
433 | ||
434 | ret = create_file("port_info", S_IFREG|S_IRUGO, dir, &tmp, | |
435 | &atomic_port_info_ops, dd); | |
436 | if (ret) { | |
437 | printk(KERN_ERR "create_file(%s/port_info) " | |
438 | "failed: %d\n", unit, ret); | |
439 | goto bail; | |
440 | } | |
441 | ||
442 | ret = create_file("flash", S_IFREG|S_IWUSR|S_IRUGO, dir, &tmp, | |
443 | &flash_ops, dd); | |
444 | if (ret) { | |
445 | printk(KERN_ERR "create_file(%s/flash) " | |
446 | "failed: %d\n", unit, ret); | |
447 | goto bail; | |
448 | } | |
449 | ||
450 | bail: | |
451 | return ret; | |
452 | } | |
453 | ||
454 | static void remove_file(struct dentry *parent, char *name) | |
455 | { | |
456 | struct dentry *tmp; | |
457 | ||
458 | tmp = lookup_one_len(name, parent, strlen(name)); | |
459 | ||
460 | spin_lock(&dcache_lock); | |
461 | spin_lock(&tmp->d_lock); | |
462 | if (!(d_unhashed(tmp) && tmp->d_inode)) { | |
463 | dget_locked(tmp); | |
464 | __d_drop(tmp); | |
465 | spin_unlock(&tmp->d_lock); | |
466 | spin_unlock(&dcache_lock); | |
467 | simple_unlink(parent->d_inode, tmp); | |
468 | } else { | |
469 | spin_unlock(&tmp->d_lock); | |
470 | spin_unlock(&dcache_lock); | |
471 | } | |
472 | } | |
473 | ||
474 | static int remove_device_files(struct super_block *sb, | |
475 | struct ipath_devdata *dd) | |
476 | { | |
477 | struct dentry *dir, *root; | |
478 | char unit[10]; | |
479 | int ret; | |
480 | ||
481 | root = dget(sb->s_root); | |
482 | mutex_lock(&root->d_inode->i_mutex); | |
483 | snprintf(unit, sizeof unit, "%02d", dd->ipath_unit); | |
484 | dir = lookup_one_len(unit, root, strlen(unit)); | |
485 | ||
486 | if (IS_ERR(dir)) { | |
487 | ret = PTR_ERR(dir); | |
488 | printk(KERN_ERR "Lookup of %s failed\n", unit); | |
489 | goto bail; | |
490 | } | |
491 | ||
492 | remove_file(dir, "flash"); | |
493 | remove_file(dir, "port_info"); | |
494 | remove_file(dir, "node_info"); | |
495 | remove_file(dir, "atomic_counters"); | |
496 | d_delete(dir); | |
497 | ret = simple_rmdir(root->d_inode, dir); | |
498 | ||
499 | bail: | |
500 | mutex_unlock(&root->d_inode->i_mutex); | |
501 | dput(root); | |
502 | return ret; | |
503 | } | |
504 | ||
505 | static int ipathfs_fill_super(struct super_block *sb, void *data, | |
506 | int silent) | |
507 | { | |
508 | struct ipath_devdata *dd, *tmp; | |
509 | unsigned long flags; | |
510 | int ret; | |
511 | ||
512 | static struct tree_descr files[] = { | |
513 | [1] = {"atomic_stats", &atomic_stats_ops, S_IRUGO}, | |
514 | {""}, | |
515 | }; | |
516 | ||
517 | ret = simple_fill_super(sb, IPATHFS_MAGIC, files); | |
518 | if (ret) { | |
519 | printk(KERN_ERR "simple_fill_super failed: %d\n", ret); | |
520 | goto bail; | |
521 | } | |
522 | ||
523 | spin_lock_irqsave(&ipath_devs_lock, flags); | |
524 | ||
525 | list_for_each_entry_safe(dd, tmp, &ipath_dev_list, ipath_list) { | |
526 | spin_unlock_irqrestore(&ipath_devs_lock, flags); | |
527 | ret = create_device_files(sb, dd); | |
528 | if (ret) { | |
529 | deactivate_super(sb); | |
530 | goto bail; | |
531 | } | |
532 | spin_lock_irqsave(&ipath_devs_lock, flags); | |
533 | } | |
534 | ||
535 | spin_unlock_irqrestore(&ipath_devs_lock, flags); | |
536 | ||
537 | bail: | |
538 | return ret; | |
539 | } | |
540 | ||
454e2398 DH |
541 | static int ipathfs_get_sb(struct file_system_type *fs_type, int flags, |
542 | const char *dev_name, void *data, struct vfsmount *mnt) | |
3e9b4a5e | 543 | { |
454e2398 DH |
544 | int ret = get_sb_single(fs_type, flags, data, |
545 | ipathfs_fill_super, mnt); | |
546 | if (ret >= 0) | |
547 | ipath_super = mnt->mnt_sb; | |
548 | return ret; | |
3e9b4a5e BS |
549 | } |
550 | ||
551 | static void ipathfs_kill_super(struct super_block *s) | |
552 | { | |
553 | kill_litter_super(s); | |
554 | ipath_super = NULL; | |
555 | } | |
556 | ||
557 | int ipathfs_add_device(struct ipath_devdata *dd) | |
558 | { | |
559 | int ret; | |
560 | ||
561 | if (ipath_super == NULL) { | |
562 | ret = 0; | |
563 | goto bail; | |
564 | } | |
565 | ||
566 | ret = create_device_files(ipath_super, dd); | |
567 | ||
568 | bail: | |
569 | return ret; | |
570 | } | |
571 | ||
572 | int ipathfs_remove_device(struct ipath_devdata *dd) | |
573 | { | |
574 | int ret; | |
575 | ||
576 | if (ipath_super == NULL) { | |
577 | ret = 0; | |
578 | goto bail; | |
579 | } | |
580 | ||
581 | ret = remove_device_files(ipath_super, dd); | |
582 | ||
583 | bail: | |
584 | return ret; | |
585 | } | |
586 | ||
587 | static struct file_system_type ipathfs_fs_type = { | |
588 | .owner = THIS_MODULE, | |
589 | .name = "ipathfs", | |
590 | .get_sb = ipathfs_get_sb, | |
591 | .kill_sb = ipathfs_kill_super, | |
592 | }; | |
593 | ||
594 | int __init ipath_init_ipathfs(void) | |
595 | { | |
596 | return register_filesystem(&ipathfs_fs_type); | |
597 | } | |
598 | ||
599 | void __exit ipath_exit_ipathfs(void) | |
600 | { | |
601 | unregister_filesystem(&ipathfs_fs_type); | |
602 | } |