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Commit | Line | Data |
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fb7d879f OW |
1 | /* |
2 | * | |
3 | * Intel Management Engine Interface (Intel MEI) Linux driver | |
733ba91c | 4 | * Copyright (c) 2003-2012, Intel Corporation. |
fb7d879f OW |
5 | * |
6 | * This program is free software; you can redistribute it and/or modify it | |
7 | * under the terms and conditions of the GNU General Public License, | |
8 | * version 2, as published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope it will be useful, but WITHOUT | |
11 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | * more details. | |
14 | * | |
15 | */ | |
16 | ||
17 | ||
40e0b67b | 18 | #include <linux/export.h> |
fb7d879f OW |
19 | #include <linux/kthread.h> |
20 | #include <linux/interrupt.h> | |
21 | #include <linux/fs.h> | |
22 | #include <linux/jiffies.h> | |
1f180359 | 23 | #include <linux/slab.h> |
34af1913 | 24 | #include <linux/pm_runtime.h> |
fb7d879f | 25 | |
4f3afe1d | 26 | #include <linux/mei.h> |
47a73801 TW |
27 | |
28 | #include "mei_dev.h" | |
0edb23fc | 29 | #include "hbm.h" |
90e0b5f1 | 30 | #include "client.h" |
fb7d879f OW |
31 | |
32 | ||
4c6e22b8 | 33 | /** |
83ce0741 | 34 | * mei_irq_compl_handler - dispatch complete handlers |
4c6e22b8 TW |
35 | * for the completed callbacks |
36 | * | |
a8605ea2 | 37 | * @dev: mei device |
962ff7bc | 38 | * @cmpl_list: list of completed cbs |
4c6e22b8 | 39 | */ |
962ff7bc | 40 | void mei_irq_compl_handler(struct mei_device *dev, struct list_head *cmpl_list) |
4c6e22b8 TW |
41 | { |
42 | struct mei_cl_cb *cb, *next; | |
43 | struct mei_cl *cl; | |
44 | ||
962ff7bc | 45 | list_for_each_entry_safe(cb, next, cmpl_list, list) { |
4c6e22b8 | 46 | cl = cb->cl; |
c54bf3ab | 47 | list_del_init(&cb->list); |
4c6e22b8 | 48 | |
2bf94cab | 49 | dev_dbg(dev->dev, "completing call back.\n"); |
394a77d0 | 50 | mei_cl_complete(cl, cb); |
4c6e22b8 TW |
51 | } |
52 | } | |
40e0b67b | 53 | EXPORT_SYMBOL_GPL(mei_irq_compl_handler); |
6e0f180f | 54 | |
fb7d879f | 55 | /** |
6e0f180f | 56 | * mei_cl_hbm_equal - check if hbm is addressed to the client |
fb7d879f | 57 | * |
6e0f180f | 58 | * @cl: host client |
fb7d879f OW |
59 | * @mei_hdr: header of mei client message |
60 | * | |
a8605ea2 | 61 | * Return: true if matches, false otherwise |
fb7d879f | 62 | */ |
6e0f180f TW |
63 | static inline int mei_cl_hbm_equal(struct mei_cl *cl, |
64 | struct mei_msg_hdr *mei_hdr) | |
fb7d879f | 65 | { |
1df629ef | 66 | return mei_cl_host_addr(cl) == mei_hdr->host_addr && |
d49ed64a | 67 | mei_cl_me_id(cl) == mei_hdr->me_addr; |
6e0f180f | 68 | } |
fb7d879f | 69 | |
331e4187 TW |
70 | /** |
71 | * mei_irq_discard_msg - discard received message | |
72 | * | |
73 | * @dev: mei device | |
74 | * @hdr: message header | |
75 | */ | |
394a77d0 | 76 | static void mei_irq_discard_msg(struct mei_device *dev, struct mei_msg_hdr *hdr) |
331e4187 TW |
77 | { |
78 | /* | |
79 | * no need to check for size as it is guarantied | |
80 | * that length fits into rd_msg_buf | |
81 | */ | |
82 | mei_read_slots(dev, dev->rd_msg_buf, hdr->length); | |
83 | dev_dbg(dev->dev, "discarding message " MEI_HDR_FMT "\n", | |
84 | MEI_HDR_PRM(hdr)); | |
85 | } | |
86 | ||
fb7d879f | 87 | /** |
ce23139c | 88 | * mei_cl_irq_read_msg - process client message |
fb7d879f | 89 | * |
3d33ff24 | 90 | * @cl: reading client |
fb7d879f | 91 | * @mei_hdr: header of mei client message |
962ff7bc | 92 | * @cmpl_list: completion list |
fb7d879f | 93 | * |
3d33ff24 | 94 | * Return: always 0 |
fb7d879f | 95 | */ |
394a77d0 AU |
96 | static int mei_cl_irq_read_msg(struct mei_cl *cl, |
97 | struct mei_msg_hdr *mei_hdr, | |
98 | struct list_head *cmpl_list) | |
fb7d879f | 99 | { |
3d33ff24 TW |
100 | struct mei_device *dev = cl->dev; |
101 | struct mei_cl_cb *cb; | |
f862b6b2 | 102 | size_t buf_sz; |
fb7d879f | 103 | |
a9bed610 TW |
104 | cb = list_first_entry_or_null(&cl->rd_pending, struct mei_cl_cb, list); |
105 | if (!cb) { | |
a808c80c AU |
106 | if (!mei_cl_is_fixed_address(cl)) { |
107 | cl_err(dev, cl, "pending read cb not found\n"); | |
dfe5f753 | 108 | goto discard; |
a808c80c AU |
109 | } |
110 | cb = mei_cl_alloc_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, cl->fp); | |
111 | if (!cb) | |
dfe5f753 | 112 | goto discard; |
a808c80c | 113 | list_add_tail(&cb->list, &cl->rd_pending); |
3d33ff24 | 114 | } |
6e0f180f | 115 | |
f3de9b63 | 116 | if (!mei_cl_is_connected(cl)) { |
a9bed610 TW |
117 | cl_dbg(dev, cl, "not connected\n"); |
118 | cb->status = -ENODEV; | |
dfe5f753 | 119 | goto discard; |
3d33ff24 | 120 | } |
6e0f180f | 121 | |
f862b6b2 TW |
122 | buf_sz = mei_hdr->length + cb->buf_idx; |
123 | /* catch for integer overflow */ | |
124 | if (buf_sz < cb->buf_idx) { | |
35bf7692 | 125 | cl_err(dev, cl, "message is too big len %d idx %zu\n", |
f862b6b2 | 126 | mei_hdr->length, cb->buf_idx); |
f862b6b2 | 127 | cb->status = -EMSGSIZE; |
dfe5f753 | 128 | goto discard; |
f862b6b2 TW |
129 | } |
130 | ||
131 | if (cb->buf.size < buf_sz) { | |
35bf7692 | 132 | cl_dbg(dev, cl, "message overflow. size %zu len %d idx %zu\n", |
5db7514d | 133 | cb->buf.size, mei_hdr->length, cb->buf_idx); |
dfe5f753 AU |
134 | cb->status = -EMSGSIZE; |
135 | goto discard; | |
fb7d879f OW |
136 | } |
137 | ||
dfe5f753 | 138 | mei_read_slots(dev, cb->buf.data + cb->buf_idx, mei_hdr->length); |
3d33ff24 TW |
139 | |
140 | cb->buf_idx += mei_hdr->length; | |
331e4187 | 141 | |
3d33ff24 | 142 | if (mei_hdr->msg_complete) { |
35bf7692 | 143 | cl_dbg(dev, cl, "completed read length = %zu\n", cb->buf_idx); |
962ff7bc | 144 | list_move_tail(&cb->list, cmpl_list); |
34af1913 AU |
145 | } else { |
146 | pm_runtime_mark_last_busy(dev->dev); | |
147 | pm_request_autosuspend(dev->dev); | |
3d33ff24 TW |
148 | } |
149 | ||
dfe5f753 | 150 | return 0; |
fb7d879f | 151 | |
dfe5f753 | 152 | discard: |
17ba8a08 | 153 | if (cb) |
962ff7bc | 154 | list_move_tail(&cb->list, cmpl_list); |
dfe5f753 | 155 | mei_irq_discard_msg(dev, mei_hdr); |
fb7d879f OW |
156 | return 0; |
157 | } | |
158 | ||
6bb948c9 TW |
159 | /** |
160 | * mei_cl_irq_disconnect_rsp - send disconnection response message | |
161 | * | |
162 | * @cl: client | |
163 | * @cb: callback block. | |
6bb948c9 TW |
164 | * @cmpl_list: complete list. |
165 | * | |
a8605ea2 | 166 | * Return: 0, OK; otherwise, error. |
6bb948c9 TW |
167 | */ |
168 | static int mei_cl_irq_disconnect_rsp(struct mei_cl *cl, struct mei_cl_cb *cb, | |
962ff7bc | 169 | struct list_head *cmpl_list) |
6bb948c9 TW |
170 | { |
171 | struct mei_device *dev = cl->dev; | |
9d098192 TW |
172 | u32 msg_slots; |
173 | int slots; | |
6bb948c9 TW |
174 | int ret; |
175 | ||
9d098192 TW |
176 | slots = mei_hbuf_empty_slots(dev); |
177 | msg_slots = mei_data2slots(sizeof(struct hbm_client_connect_response)); | |
6bb948c9 | 178 | |
9d098192 | 179 | if (slots < msg_slots) |
6bb948c9 TW |
180 | return -EMSGSIZE; |
181 | ||
6bb948c9 | 182 | ret = mei_hbm_cl_disconnect_rsp(dev, cl); |
962ff7bc | 183 | list_move_tail(&cb->list, cmpl_list); |
6bb948c9 TW |
184 | |
185 | return ret; | |
186 | } | |
187 | ||
fb7d879f | 188 | /** |
ce23139c | 189 | * mei_cl_irq_read - processes client read related operation from the |
6220d6a0 | 190 | * interrupt thread context - request for flow control credits |
fb7d879f | 191 | * |
6220d6a0 TW |
192 | * @cl: client |
193 | * @cb: callback block. | |
fb7d879f OW |
194 | * @cmpl_list: complete list. |
195 | * | |
a8605ea2 | 196 | * Return: 0, OK; otherwise, error. |
fb7d879f | 197 | */ |
6220d6a0 | 198 | static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb, |
962ff7bc | 199 | struct list_head *cmpl_list) |
fb7d879f | 200 | { |
6220d6a0 | 201 | struct mei_device *dev = cl->dev; |
9d098192 TW |
202 | u32 msg_slots; |
203 | int slots; | |
2ebf8c94 TW |
204 | int ret; |
205 | ||
ff1586a7 AU |
206 | if (!list_empty(&cl->rd_pending)) |
207 | return 0; | |
208 | ||
9d098192 TW |
209 | msg_slots = mei_data2slots(sizeof(struct hbm_flow_control)); |
210 | slots = mei_hbuf_empty_slots(dev); | |
2ebf8c94 | 211 | |
9d098192 | 212 | if (slots < msg_slots) |
c8c8d080 | 213 | return -EMSGSIZE; |
7bdf72d3 | 214 | |
2ebf8c94 TW |
215 | ret = mei_hbm_cl_flow_control_req(dev, cl); |
216 | if (ret) { | |
217 | cl->status = ret; | |
6220d6a0 | 218 | cb->buf_idx = 0; |
962ff7bc | 219 | list_move_tail(&cb->list, cmpl_list); |
2ebf8c94 | 220 | return ret; |
1ccb7b62 | 221 | } |
2ebf8c94 | 222 | |
a9bed610 | 223 | list_move_tail(&cb->list, &cl->rd_pending); |
1ccb7b62 | 224 | |
fb7d879f OW |
225 | return 0; |
226 | } | |
227 | ||
603c53e4 AU |
228 | static inline bool hdr_is_hbm(struct mei_msg_hdr *mei_hdr) |
229 | { | |
230 | return mei_hdr->host_addr == 0 && mei_hdr->me_addr == 0; | |
231 | } | |
232 | ||
233 | static inline bool hdr_is_fixed(struct mei_msg_hdr *mei_hdr) | |
234 | { | |
235 | return mei_hdr->host_addr == 0 && mei_hdr->me_addr != 0; | |
236 | } | |
237 | ||
fb7d879f | 238 | /** |
393b148f | 239 | * mei_irq_read_handler - bottom half read routine after ISR to |
fb7d879f OW |
240 | * handle the read processing. |
241 | * | |
fb7d879f | 242 | * @dev: the device structure |
06ecd645 | 243 | * @cmpl_list: An instance of our list structure |
fb7d879f OW |
244 | * @slots: slots to read. |
245 | * | |
a8605ea2 | 246 | * Return: 0 on success, <0 on failure. |
fb7d879f | 247 | */ |
06ecd645 | 248 | int mei_irq_read_handler(struct mei_device *dev, |
962ff7bc | 249 | struct list_head *cmpl_list, s32 *slots) |
fb7d879f OW |
250 | { |
251 | struct mei_msg_hdr *mei_hdr; | |
10ee9074 TW |
252 | struct mei_cl *cl; |
253 | int ret; | |
fb7d879f OW |
254 | |
255 | if (!dev->rd_msg_hdr) { | |
827eef51 | 256 | dev->rd_msg_hdr = mei_read_hdr(dev); |
fb7d879f | 257 | (*slots)--; |
2bf94cab | 258 | dev_dbg(dev->dev, "slots =%08x.\n", *slots); |
fb7d879f OW |
259 | } |
260 | mei_hdr = (struct mei_msg_hdr *) &dev->rd_msg_hdr; | |
2bf94cab | 261 | dev_dbg(dev->dev, MEI_HDR_FMT, MEI_HDR_PRM(mei_hdr)); |
fb7d879f OW |
262 | |
263 | if (mei_hdr->reserved || !dev->rd_msg_hdr) { | |
2bf94cab | 264 | dev_err(dev->dev, "corrupted message header 0x%08X\n", |
10ee9074 | 265 | dev->rd_msg_hdr); |
fb7d879f OW |
266 | ret = -EBADMSG; |
267 | goto end; | |
268 | } | |
269 | ||
10ee9074 | 270 | if (mei_slots2data(*slots) < mei_hdr->length) { |
2bf94cab | 271 | dev_err(dev->dev, "less data available than length=%08x.\n", |
fb7d879f OW |
272 | *slots); |
273 | /* we can't read the message */ | |
b1b94b5d | 274 | ret = -ENODATA; |
fb7d879f OW |
275 | goto end; |
276 | } | |
277 | ||
10ee9074 | 278 | /* HBM message */ |
603c53e4 | 279 | if (hdr_is_hbm(mei_hdr)) { |
544f9460 TW |
280 | ret = mei_hbm_dispatch(dev, mei_hdr); |
281 | if (ret) { | |
2bf94cab | 282 | dev_dbg(dev->dev, "mei_hbm_dispatch failed ret = %d\n", |
544f9460 TW |
283 | ret); |
284 | goto end; | |
285 | } | |
10ee9074 TW |
286 | goto reset_slots; |
287 | } | |
15d4acc5 | 288 | |
83ce0741 | 289 | /* find recipient cl */ |
10ee9074 TW |
290 | list_for_each_entry(cl, &dev->file_list, link) { |
291 | if (mei_cl_hbm_equal(cl, mei_hdr)) { | |
292 | cl_dbg(dev, cl, "got a message\n"); | |
293 | break; | |
294 | } | |
295 | } | |
296 | ||
83ce0741 | 297 | /* if no recipient cl was found we assume corrupted header */ |
10ee9074 | 298 | if (&cl->link == &dev->file_list) { |
603c53e4 AU |
299 | /* A message for not connected fixed address clients |
300 | * should be silently discarded | |
301 | */ | |
302 | if (hdr_is_fixed(mei_hdr)) { | |
303 | mei_irq_discard_msg(dev, mei_hdr); | |
304 | ret = 0; | |
305 | goto reset_slots; | |
306 | } | |
2bf94cab | 307 | dev_err(dev->dev, "no destination client found 0x%08X\n", |
10ee9074 TW |
308 | dev->rd_msg_hdr); |
309 | ret = -EBADMSG; | |
310 | goto end; | |
311 | } | |
312 | ||
394a77d0 | 313 | ret = mei_cl_irq_read_msg(cl, mei_hdr, cmpl_list); |
fb7d879f | 314 | |
3d33ff24 | 315 | |
10ee9074 | 316 | reset_slots: |
fb7d879f OW |
317 | /* reset the number of slots and header */ |
318 | *slots = mei_count_full_read_slots(dev); | |
319 | dev->rd_msg_hdr = 0; | |
320 | ||
321 | if (*slots == -EOVERFLOW) { | |
322 | /* overflow - reset */ | |
2bf94cab | 323 | dev_err(dev->dev, "resetting due to slots overflow.\n"); |
fb7d879f OW |
324 | /* set the event since message has been read */ |
325 | ret = -ERANGE; | |
326 | goto end; | |
327 | } | |
328 | end: | |
329 | return ret; | |
330 | } | |
40e0b67b | 331 | EXPORT_SYMBOL_GPL(mei_irq_read_handler); |
fb7d879f OW |
332 | |
333 | ||
334 | /** | |
06ecd645 TW |
335 | * mei_irq_write_handler - dispatch write requests |
336 | * after irq received | |
fb7d879f | 337 | * |
fb7d879f | 338 | * @dev: the device structure |
9a84d616 | 339 | * @cmpl_list: An instance of our list structure |
fb7d879f | 340 | * |
a8605ea2 | 341 | * Return: 0 on success, <0 on failure. |
fb7d879f | 342 | */ |
962ff7bc | 343 | int mei_irq_write_handler(struct mei_device *dev, struct list_head *cmpl_list) |
fb7d879f OW |
344 | { |
345 | ||
346 | struct mei_cl *cl; | |
6220d6a0 | 347 | struct mei_cl_cb *cb, *next; |
9a84d616 | 348 | s32 slots; |
fb7d879f OW |
349 | int ret; |
350 | ||
6aae48ff TW |
351 | |
352 | if (!mei_hbuf_acquire(dev)) | |
fb7d879f | 353 | return 0; |
6aae48ff | 354 | |
9a84d616 TW |
355 | slots = mei_hbuf_empty_slots(dev); |
356 | if (slots <= 0) | |
7d5e0e59 TW |
357 | return -EMSGSIZE; |
358 | ||
fb7d879f | 359 | /* complete all waiting for write CB */ |
2bf94cab | 360 | dev_dbg(dev->dev, "complete all waiting for write cb.\n"); |
fb7d879f | 361 | |
962ff7bc | 362 | list_for_each_entry_safe(cb, next, &dev->write_waiting_list, list) { |
6220d6a0 | 363 | cl = cb->cl; |
b7cd2d9f TW |
364 | |
365 | cl->status = 0; | |
c54bf3ab TW |
366 | cl_dbg(dev, cl, "MEI WRITE COMPLETE\n"); |
367 | cl->writing_state = MEI_WRITE_COMPLETE; | |
962ff7bc | 368 | list_move_tail(&cb->list, cmpl_list); |
fb7d879f OW |
369 | } |
370 | ||
fb7d879f | 371 | /* complete control write list CB */ |
2bf94cab | 372 | dev_dbg(dev->dev, "complete control write list cb.\n"); |
962ff7bc | 373 | list_for_each_entry_safe(cb, next, &dev->ctrl_wr_list, list) { |
6220d6a0 | 374 | cl = cb->cl; |
6220d6a0 | 375 | switch (cb->fop_type) { |
5a8373fb | 376 | case MEI_FOP_DISCONNECT: |
c8372094 | 377 | /* send disconnect message */ |
5a8373fb | 378 | ret = mei_cl_irq_disconnect(cl, cb, cmpl_list); |
c8372094 TW |
379 | if (ret) |
380 | return ret; | |
fb7d879f | 381 | |
c8372094 | 382 | break; |
4b8960b4 | 383 | case MEI_FOP_READ: |
c8372094 | 384 | /* send flow control message */ |
9d098192 | 385 | ret = mei_cl_irq_read(cl, cb, cmpl_list); |
c8372094 TW |
386 | if (ret) |
387 | return ret; | |
fb7d879f | 388 | |
c8372094 | 389 | break; |
02a7eecc | 390 | case MEI_FOP_CONNECT: |
c8372094 | 391 | /* connect message */ |
9d098192 | 392 | ret = mei_cl_irq_connect(cl, cb, cmpl_list); |
c8372094 TW |
393 | if (ret) |
394 | return ret; | |
fb7d879f | 395 | |
c8372094 | 396 | break; |
6bb948c9 TW |
397 | case MEI_FOP_DISCONNECT_RSP: |
398 | /* send disconnect resp */ | |
9d098192 | 399 | ret = mei_cl_irq_disconnect_rsp(cl, cb, cmpl_list); |
6bb948c9 TW |
400 | if (ret) |
401 | return ret; | |
31a5ef24 | 402 | break; |
51678ccb TW |
403 | |
404 | case MEI_FOP_NOTIFY_START: | |
405 | case MEI_FOP_NOTIFY_STOP: | |
406 | ret = mei_cl_irq_notify(cl, cb, cmpl_list); | |
407 | if (ret) | |
408 | return ret; | |
409 | break; | |
c8372094 TW |
410 | default: |
411 | BUG(); | |
fb7d879f | 412 | } |
c8372094 | 413 | |
fb7d879f OW |
414 | } |
415 | /* complete write list CB */ | |
2bf94cab | 416 | dev_dbg(dev->dev, "complete write list cb.\n"); |
962ff7bc | 417 | list_for_each_entry_safe(cb, next, &dev->write_list, list) { |
6220d6a0 | 418 | cl = cb->cl; |
394a77d0 | 419 | ret = mei_cl_irq_write(cl, cb, cmpl_list); |
be9d87a7 TW |
420 | if (ret) |
421 | return ret; | |
fb7d879f OW |
422 | } |
423 | return 0; | |
424 | } | |
40e0b67b | 425 | EXPORT_SYMBOL_GPL(mei_irq_write_handler); |
fb7d879f OW |
426 | |
427 | ||
18901357 AU |
428 | /** |
429 | * mei_connect_timeout - connect/disconnect timeouts | |
430 | * | |
431 | * @cl: host client | |
432 | */ | |
433 | static void mei_connect_timeout(struct mei_cl *cl) | |
434 | { | |
435 | struct mei_device *dev = cl->dev; | |
436 | ||
437 | if (cl->state == MEI_FILE_CONNECTING) { | |
438 | if (dev->hbm_f_dot_supported) { | |
439 | cl->state = MEI_FILE_DISCONNECT_REQUIRED; | |
440 | wake_up(&cl->wait); | |
441 | return; | |
442 | } | |
443 | } | |
444 | mei_reset(dev); | |
445 | } | |
fb7d879f | 446 | |
1892fc2e AU |
447 | #define MEI_STALL_TIMER_FREQ (2 * HZ) |
448 | /** | |
449 | * mei_schedule_stall_timer - re-arm stall_timer work | |
450 | * | |
451 | * Schedule stall timer | |
452 | * | |
453 | * @dev: the device structure | |
454 | */ | |
455 | void mei_schedule_stall_timer(struct mei_device *dev) | |
456 | { | |
457 | schedule_delayed_work(&dev->timer_work, MEI_STALL_TIMER_FREQ); | |
458 | } | |
459 | ||
fb7d879f OW |
460 | /** |
461 | * mei_timer - timer function. | |
462 | * | |
463 | * @work: pointer to the work_struct structure | |
464 | * | |
fb7d879f | 465 | */ |
a61c6530 | 466 | void mei_timer(struct work_struct *work) |
fb7d879f | 467 | { |
31f88f57 | 468 | struct mei_cl *cl; |
fb7d879f | 469 | struct mei_device *dev = container_of(work, |
a61c6530 | 470 | struct mei_device, timer_work.work); |
1892fc2e | 471 | bool reschedule_timer = false; |
fb7d879f OW |
472 | |
473 | mutex_lock(&dev->device_lock); | |
66ae460b TW |
474 | |
475 | /* Catch interrupt stalls during HBM init handshake */ | |
476 | if (dev->dev_state == MEI_DEV_INIT_CLIENTS && | |
477 | dev->hbm_state != MEI_HBM_IDLE) { | |
478 | ||
479 | if (dev->init_clients_timer) { | |
480 | if (--dev->init_clients_timer == 0) { | |
2bf94cab | 481 | dev_err(dev->dev, "timer: init clients timeout hbm_state = %d.\n", |
66ae460b | 482 | dev->hbm_state); |
33ec0826 | 483 | mei_reset(dev); |
66ae460b | 484 | goto out; |
fb7d879f | 485 | } |
1892fc2e | 486 | reschedule_timer = true; |
fb7d879f | 487 | } |
fb7d879f | 488 | } |
66ae460b TW |
489 | |
490 | if (dev->dev_state != MEI_DEV_ENABLED) | |
491 | goto out; | |
492 | ||
fb7d879f | 493 | /*** connect/disconnect timeouts ***/ |
31f88f57 TW |
494 | list_for_each_entry(cl, &dev->file_list, link) { |
495 | if (cl->timer_count) { | |
496 | if (--cl->timer_count == 0) { | |
2bf94cab | 497 | dev_err(dev->dev, "timer: connect/disconnect timeout.\n"); |
18901357 | 498 | mei_connect_timeout(cl); |
fb7d879f OW |
499 | goto out; |
500 | } | |
1892fc2e | 501 | reschedule_timer = true; |
fb7d879f OW |
502 | } |
503 | } | |
504 | ||
fb7d879f | 505 | out: |
1892fc2e AU |
506 | if (dev->dev_state != MEI_DEV_DISABLED && reschedule_timer) |
507 | mei_schedule_stall_timer(dev); | |
508 | ||
441ab50f | 509 | mutex_unlock(&dev->device_lock); |
fb7d879f | 510 | } |