blob: ee87ef972ead7667a60a1359e9347e9ebaf60bda [file] [log] [blame]
Dave Jiang91b99042007-07-19 01:49:52 -07001/*
2 * EDAC PCI component
3 *
4 * Author: Dave Jiang <djiang@mvista.com>
5 *
6 * 2007 (c) MontaVista Software, Inc. This file is licensed under
7 * the terms of the GNU General Public License version 2. This program
8 * is licensed "as is" without any warranty of any kind, whether express
9 * or implied.
10 *
11 */
12#include <linux/module.h>
13#include <linux/types.h>
14#include <linux/smp.h>
15#include <linux/init.h>
16#include <linux/sysctl.h>
17#include <linux/highmem.h>
18#include <linux/timer.h>
19#include <linux/slab.h>
20#include <linux/spinlock.h>
21#include <linux/list.h>
Dave Jiang91b99042007-07-19 01:49:52 -070022#include <linux/ctype.h>
23#include <linux/workqueue.h>
24#include <asm/uaccess.h>
25#include <asm/page.h>
26
27#include "edac_core.h"
28#include "edac_module.h"
29
30static DEFINE_MUTEX(edac_pci_ctls_mutex);
Robert P. J. Dayff6ac2a2008-04-29 01:03:17 -070031static LIST_HEAD(edac_pci_list);
Harry Ciao8641a382009-04-02 16:58:47 -070032static atomic_t pci_indexes = ATOMIC_INIT(0);
Dave Jiang91b99042007-07-19 01:49:52 -070033
Dave Jiang91b99042007-07-19 01:49:52 -070034/*
Doug Thompsond4c14652007-07-26 10:41:15 -070035 * edac_pci_alloc_ctl_info
36 *
37 * The alloc() function for the 'edac_pci' control info
38 * structure. The chip driver will allocate one of these for each
39 * edac_pci it is going to control/register with the EDAC CORE.
Dave Jiang91b99042007-07-19 01:49:52 -070040 */
Douglas Thompson079708b2007-07-19 01:49:58 -070041struct edac_pci_ctl_info *edac_pci_alloc_ctl_info(unsigned int sz_pvt,
Douglas Thompson052dfb42007-07-19 01:50:13 -070042 const char *edac_pci_name)
Dave Jiang91b99042007-07-19 01:49:52 -070043{
44 struct edac_pci_ctl_info *pci;
Mauro Carvalho Chehab93e4fe62012-04-16 10:18:12 -030045 void *p = NULL, *pvt;
Dave Jiang91b99042007-07-19 01:49:52 -070046 unsigned int size;
47
Joe Perches956b9ba2012-04-29 17:08:39 -030048 edac_dbg(1, "\n");
Doug Thompsond4c14652007-07-26 10:41:15 -070049
Mauro Carvalho Chehab93e4fe62012-04-16 10:18:12 -030050 pci = edac_align_ptr(&p, sizeof(*pci), 1);
51 pvt = edac_align_ptr(&p, 1, sz_pvt);
Dave Jiang91b99042007-07-19 01:49:52 -070052 size = ((unsigned long)pvt) + sz_pvt;
53
Doug Thompsond4c14652007-07-26 10:41:15 -070054 /* Alloc the needed control struct memory */
55 pci = kzalloc(size, GFP_KERNEL);
56 if (pci == NULL)
Dave Jiang91b99042007-07-19 01:49:52 -070057 return NULL;
58
Doug Thompsond4c14652007-07-26 10:41:15 -070059 /* Now much private space */
Dave Jiang91b99042007-07-19 01:49:52 -070060 pvt = sz_pvt ? ((char *)pci) + ((unsigned long)pvt) : NULL;
61
62 pci->pvt_info = pvt;
Dave Jiang91b99042007-07-19 01:49:52 -070063 pci->op_state = OP_ALLOC;
64
Douglas Thompson079708b2007-07-19 01:49:58 -070065 snprintf(pci->name, strlen(edac_pci_name) + 1, "%s", edac_pci_name);
Dave Jiang91b99042007-07-19 01:49:52 -070066
67 return pci;
68}
69EXPORT_SYMBOL_GPL(edac_pci_alloc_ctl_info);
70
71/*
72 * edac_pci_free_ctl_info()
Doug Thompsond4c14652007-07-26 10:41:15 -070073 *
74 * Last action on the pci control structure.
75 *
Joe Perches6f042b52008-02-03 17:12:34 +020076 * call the remove sysfs information, which will unregister
Doug Thompsond4c14652007-07-26 10:41:15 -070077 * this control struct's kobj. When that kobj's ref count
78 * goes to zero, its release function will be call and then
79 * kfree() the memory.
Dave Jiang91b99042007-07-19 01:49:52 -070080 */
81void edac_pci_free_ctl_info(struct edac_pci_ctl_info *pci)
82{
Joe Perches956b9ba2012-04-29 17:08:39 -030083 edac_dbg(1, "\n");
Douglas Thompson079708b2007-07-19 01:49:58 -070084
Doug Thompsond4c14652007-07-26 10:41:15 -070085 edac_pci_remove_sysfs(pci);
86}
Dave Jiang91b99042007-07-19 01:49:52 -070087EXPORT_SYMBOL_GPL(edac_pci_free_ctl_info);
88
89/*
90 * find_edac_pci_by_dev()
91 * scans the edac_pci list for a specific 'struct device *'
Doug Thompsond4c14652007-07-26 10:41:15 -070092 *
93 * return NULL if not found, or return control struct pointer
Dave Jiang91b99042007-07-19 01:49:52 -070094 */
Douglas Thompson079708b2007-07-19 01:49:58 -070095static struct edac_pci_ctl_info *find_edac_pci_by_dev(struct device *dev)
Dave Jiang91b99042007-07-19 01:49:52 -070096{
97 struct edac_pci_ctl_info *pci;
98 struct list_head *item;
99
Joe Perches956b9ba2012-04-29 17:08:39 -0300100 edac_dbg(1, "\n");
Dave Jiang91b99042007-07-19 01:49:52 -0700101
102 list_for_each(item, &edac_pci_list) {
103 pci = list_entry(item, struct edac_pci_ctl_info, link);
104
105 if (pci->dev == dev)
106 return pci;
107 }
108
109 return NULL;
110}
111
112/*
113 * add_edac_pci_to_global_list
114 * Before calling this function, caller must assign a unique value to
115 * edac_dev->pci_idx.
116 * Return:
117 * 0 on success
118 * 1 on failure
119 */
120static int add_edac_pci_to_global_list(struct edac_pci_ctl_info *pci)
121{
122 struct list_head *item, *insert_before;
123 struct edac_pci_ctl_info *rover;
124
Joe Perches956b9ba2012-04-29 17:08:39 -0300125 edac_dbg(1, "\n");
Doug Thompsond4c14652007-07-26 10:41:15 -0700126
Dave Jiang91b99042007-07-19 01:49:52 -0700127 insert_before = &edac_pci_list;
128
129 /* Determine if already on the list */
Doug Thompsond4c14652007-07-26 10:41:15 -0700130 rover = find_edac_pci_by_dev(pci->dev);
131 if (unlikely(rover != NULL))
Dave Jiang91b99042007-07-19 01:49:52 -0700132 goto fail0;
133
134 /* Insert in ascending order by 'pci_idx', so find position */
135 list_for_each(item, &edac_pci_list) {
136 rover = list_entry(item, struct edac_pci_ctl_info, link);
137
138 if (rover->pci_idx >= pci->pci_idx) {
139 if (unlikely(rover->pci_idx == pci->pci_idx))
140 goto fail1;
141
142 insert_before = item;
143 break;
144 }
145 }
146
147 list_add_tail_rcu(&pci->link, insert_before);
148 return 0;
149
Douglas Thompson052dfb42007-07-19 01:50:13 -0700150fail0:
Dave Jiang91b99042007-07-19 01:49:52 -0700151 edac_printk(KERN_WARNING, EDAC_PCI,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700152 "%s (%s) %s %s already assigned %d\n",
Kay Sievers281efb12009-01-06 14:42:57 -0800153 dev_name(rover->dev), edac_dev_name(rover),
Douglas Thompson052dfb42007-07-19 01:50:13 -0700154 rover->mod_name, rover->ctl_name, rover->pci_idx);
Dave Jiang91b99042007-07-19 01:49:52 -0700155 return 1;
156
Douglas Thompson052dfb42007-07-19 01:50:13 -0700157fail1:
Dave Jiang91b99042007-07-19 01:49:52 -0700158 edac_printk(KERN_WARNING, EDAC_PCI,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700159 "but in low-level driver: attempt to assign\n"
160 "\tduplicate pci_idx %d in %s()\n", rover->pci_idx,
161 __func__);
Dave Jiang91b99042007-07-19 01:49:52 -0700162 return 1;
163}
164
165/*
Dave Jiang91b99042007-07-19 01:49:52 -0700166 * del_edac_pci_from_global_list
Doug Thompsond4c14652007-07-26 10:41:15 -0700167 *
168 * remove the PCI control struct from the global list
Dave Jiang91b99042007-07-19 01:49:52 -0700169 */
170static void del_edac_pci_from_global_list(struct edac_pci_ctl_info *pci)
171{
172 list_del_rcu(&pci->link);
Lai Jiangshane2e77092011-05-26 16:25:58 -0700173
174 /* these are for safe removal of devices from global list while
175 * NMI handlers may be traversing list
176 */
177 synchronize_rcu();
178 INIT_LIST_HEAD(&pci->link);
Dave Jiang91b99042007-07-19 01:49:52 -0700179}
180
Adrian Bunk1a450272008-04-29 01:03:18 -0700181#if 0
182/* Older code, but might use in the future */
183
Dave Jiang91b99042007-07-19 01:49:52 -0700184/*
185 * edac_pci_find()
186 * Search for an edac_pci_ctl_info structure whose index is 'idx'
187 *
188 * If found, return a pointer to the structure
189 * Else return NULL.
190 *
191 * Caller must hold pci_ctls_mutex.
192 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700193struct edac_pci_ctl_info *edac_pci_find(int idx)
Dave Jiang91b99042007-07-19 01:49:52 -0700194{
195 struct list_head *item;
196 struct edac_pci_ctl_info *pci;
197
198 /* Iterage over list, looking for exact match of ID */
199 list_for_each(item, &edac_pci_list) {
200 pci = list_entry(item, struct edac_pci_ctl_info, link);
201
202 if (pci->pci_idx >= idx) {
203 if (pci->pci_idx == idx)
204 return pci;
205
Douglas Thompson079708b2007-07-19 01:49:58 -0700206 /* not on list, so terminate early */
Dave Jiang91b99042007-07-19 01:49:52 -0700207 break;
208 }
209 }
210
211 return NULL;
212}
213EXPORT_SYMBOL_GPL(edac_pci_find);
Adrian Bunk1a450272008-04-29 01:03:18 -0700214#endif
Dave Jiang91b99042007-07-19 01:49:52 -0700215
216/*
217 * edac_pci_workq_function()
Doug Thompsond4c14652007-07-26 10:41:15 -0700218 *
219 * periodic function that performs the operation
220 * scheduled by a workq request, for a given PCI control struct
Dave Jiang91b99042007-07-19 01:49:52 -0700221 */
Dave Jiang91b99042007-07-19 01:49:52 -0700222static void edac_pci_workq_function(struct work_struct *work_req)
223{
Jean Delvarefbeb4382009-04-13 14:40:21 -0700224 struct delayed_work *d_work = to_delayed_work(work_req);
Dave Jiang91b99042007-07-19 01:49:52 -0700225 struct edac_pci_ctl_info *pci = to_edac_pci_ctl_work(d_work);
Doug Thompsond4c14652007-07-26 10:41:15 -0700226 int msec;
227 unsigned long delay;
Dave Jiang91b99042007-07-19 01:49:52 -0700228
Joe Perches956b9ba2012-04-29 17:08:39 -0300229 edac_dbg(3, "checking\n");
Dave Jiang91b99042007-07-19 01:49:52 -0700230
Doug Thompsond4c14652007-07-26 10:41:15 -0700231 mutex_lock(&edac_pci_ctls_mutex);
Dave Jiang91b99042007-07-19 01:49:52 -0700232
Doug Thompsond4c14652007-07-26 10:41:15 -0700233 if (pci->op_state == OP_RUNNING_POLL) {
234 /* we might be in POLL mode, but there may NOT be a poll func
235 */
236 if ((pci->edac_check != NULL) && edac_pci_get_check_errors())
237 pci->edac_check(pci);
Dave Jiang91b99042007-07-19 01:49:52 -0700238
Doug Thompsond4c14652007-07-26 10:41:15 -0700239 /* if we are on a one second period, then use round */
240 msec = edac_pci_get_poll_msec();
241 if (msec == 1000)
Anton Blanchardc2ae24c2008-02-07 00:14:51 -0800242 delay = round_jiffies_relative(msecs_to_jiffies(msec));
Doug Thompsond4c14652007-07-26 10:41:15 -0700243 else
244 delay = msecs_to_jiffies(msec);
245
246 /* Reschedule only if we are in POLL mode */
247 queue_delayed_work(edac_workqueue, &pci->work, delay);
248 }
249
250 mutex_unlock(&edac_pci_ctls_mutex);
Dave Jiang91b99042007-07-19 01:49:52 -0700251}
252
253/*
254 * edac_pci_workq_setup()
255 * initialize a workq item for this edac_pci instance
256 * passing in the new delay period in msec
Doug Thompsond4c14652007-07-26 10:41:15 -0700257 *
258 * locking model:
259 * called when 'edac_pci_ctls_mutex' is locked
Dave Jiang91b99042007-07-19 01:49:52 -0700260 */
261static void edac_pci_workq_setup(struct edac_pci_ctl_info *pci,
Douglas Thompson079708b2007-07-19 01:49:58 -0700262 unsigned int msec)
Dave Jiang91b99042007-07-19 01:49:52 -0700263{
Joe Perches956b9ba2012-04-29 17:08:39 -0300264 edac_dbg(0, "\n");
Dave Jiang91b99042007-07-19 01:49:52 -0700265
Dave Jiang91b99042007-07-19 01:49:52 -0700266 INIT_DELAYED_WORK(&pci->work, edac_pci_workq_function);
Dave Jiang4de78c62007-07-19 01:49:54 -0700267 queue_delayed_work(edac_workqueue, &pci->work,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700268 msecs_to_jiffies(edac_pci_get_poll_msec()));
Dave Jiang91b99042007-07-19 01:49:52 -0700269}
270
271/*
272 * edac_pci_workq_teardown()
273 * stop the workq processing on this edac_pci instance
274 */
275static void edac_pci_workq_teardown(struct edac_pci_ctl_info *pci)
276{
277 int status;
278
Joe Perches956b9ba2012-04-29 17:08:39 -0300279 edac_dbg(0, "\n");
Doug Thompsond4c14652007-07-26 10:41:15 -0700280
Dave Jiang91b99042007-07-19 01:49:52 -0700281 status = cancel_delayed_work(&pci->work);
282 if (status == 0)
283 flush_workqueue(edac_workqueue);
284}
285
286/*
287 * edac_pci_reset_delay_period
Doug Thompsond4c14652007-07-26 10:41:15 -0700288 *
289 * called with a new period value for the workq period
290 * a) stop current workq timer
291 * b) restart workq timer with new value
Dave Jiang91b99042007-07-19 01:49:52 -0700292 */
293void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci,
Douglas Thompson079708b2007-07-19 01:49:58 -0700294 unsigned long value)
Dave Jiang91b99042007-07-19 01:49:52 -0700295{
Joe Perches956b9ba2012-04-29 17:08:39 -0300296 edac_dbg(0, "\n");
Dave Jiang91b99042007-07-19 01:49:52 -0700297
298 edac_pci_workq_teardown(pci);
299
Doug Thompsond4c14652007-07-26 10:41:15 -0700300 /* need to lock for the setup */
301 mutex_lock(&edac_pci_ctls_mutex);
302
Dave Jiang91b99042007-07-19 01:49:52 -0700303 edac_pci_workq_setup(pci, value);
304
Doug Thompsond4c14652007-07-26 10:41:15 -0700305 mutex_unlock(&edac_pci_ctls_mutex);
Dave Jiang91b99042007-07-19 01:49:52 -0700306}
307EXPORT_SYMBOL_GPL(edac_pci_reset_delay_period);
308
309/*
Harry Ciao8641a382009-04-02 16:58:47 -0700310 * edac_pci_alloc_index: Allocate a unique PCI index number
311 *
312 * Return:
313 * allocated index number
314 *
315 */
316int edac_pci_alloc_index(void)
317{
318 return atomic_inc_return(&pci_indexes) - 1;
319}
320EXPORT_SYMBOL_GPL(edac_pci_alloc_index);
321
322/*
Dave Jiang91b99042007-07-19 01:49:52 -0700323 * edac_pci_add_device: Insert the 'edac_dev' structure into the
324 * edac_pci global list and create sysfs entries associated with
325 * edac_pci structure.
326 * @pci: pointer to the edac_device structure to be added to the list
327 * @edac_idx: A unique numeric identifier to be assigned to the
328 * 'edac_pci' structure.
329 *
330 * Return:
331 * 0 Success
332 * !0 Failure
333 */
334int edac_pci_add_device(struct edac_pci_ctl_info *pci, int edac_idx)
335{
Joe Perches956b9ba2012-04-29 17:08:39 -0300336 edac_dbg(0, "\n");
Dave Jiang91b99042007-07-19 01:49:52 -0700337
338 pci->pci_idx = edac_idx;
Doug Thompsond4c14652007-07-26 10:41:15 -0700339 pci->start_time = jiffies;
Dave Jiang91b99042007-07-19 01:49:52 -0700340
Doug Thompsond4c14652007-07-26 10:41:15 -0700341 mutex_lock(&edac_pci_ctls_mutex);
Dave Jiang91b99042007-07-19 01:49:52 -0700342
343 if (add_edac_pci_to_global_list(pci))
344 goto fail0;
345
Dave Jiang91b99042007-07-19 01:49:52 -0700346 if (edac_pci_create_sysfs(pci)) {
347 edac_pci_printk(pci, KERN_WARNING,
348 "failed to create sysfs pci\n");
349 goto fail1;
350 }
351
352 if (pci->edac_check != NULL) {
353 pci->op_state = OP_RUNNING_POLL;
354
355 edac_pci_workq_setup(pci, 1000);
356 } else {
357 pci->op_state = OP_RUNNING_INTERRUPT;
358 }
359
360 edac_pci_printk(pci, KERN_INFO,
Douglas Thompson079708b2007-07-19 01:49:58 -0700361 "Giving out device to module '%s' controller '%s':"
362 " DEV '%s' (%s)\n",
363 pci->mod_name,
364 pci->ctl_name,
Stephen Rothwell17aa7e02008-05-05 13:54:19 +1000365 edac_dev_name(pci), edac_op_state_to_string(pci->op_state));
Dave Jiang91b99042007-07-19 01:49:52 -0700366
Doug Thompsond4c14652007-07-26 10:41:15 -0700367 mutex_unlock(&edac_pci_ctls_mutex);
Dave Jiang91b99042007-07-19 01:49:52 -0700368 return 0;
369
Doug Thompsond4c14652007-07-26 10:41:15 -0700370 /* error unwind stack */
Douglas Thompson052dfb42007-07-19 01:50:13 -0700371fail1:
Dave Jiang91b99042007-07-19 01:49:52 -0700372 del_edac_pci_from_global_list(pci);
Douglas Thompson052dfb42007-07-19 01:50:13 -0700373fail0:
Doug Thompsond4c14652007-07-26 10:41:15 -0700374 mutex_unlock(&edac_pci_ctls_mutex);
Dave Jiang91b99042007-07-19 01:49:52 -0700375 return 1;
376}
377EXPORT_SYMBOL_GPL(edac_pci_add_device);
378
379/*
380 * edac_pci_del_device()
381 * Remove sysfs entries for specified edac_pci structure and
382 * then remove edac_pci structure from global list
383 *
384 * @dev:
385 * Pointer to 'struct device' representing edac_pci structure
386 * to remove
387 *
388 * Return:
389 * Pointer to removed edac_pci structure,
390 * or NULL if device not found
391 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700392struct edac_pci_ctl_info *edac_pci_del_device(struct device *dev)
Dave Jiang91b99042007-07-19 01:49:52 -0700393{
394 struct edac_pci_ctl_info *pci;
395
Joe Perches956b9ba2012-04-29 17:08:39 -0300396 edac_dbg(0, "\n");
Dave Jiang91b99042007-07-19 01:49:52 -0700397
Doug Thompsond4c14652007-07-26 10:41:15 -0700398 mutex_lock(&edac_pci_ctls_mutex);
Dave Jiang91b99042007-07-19 01:49:52 -0700399
Doug Thompsond4c14652007-07-26 10:41:15 -0700400 /* ensure the control struct is on the global list
401 * if not, then leave
402 */
403 pci = find_edac_pci_by_dev(dev);
404 if (pci == NULL) {
405 mutex_unlock(&edac_pci_ctls_mutex);
Dave Jiang91b99042007-07-19 01:49:52 -0700406 return NULL;
407 }
408
409 pci->op_state = OP_OFFLINE;
410
Dave Jiang91b99042007-07-19 01:49:52 -0700411 del_edac_pci_from_global_list(pci);
412
Doug Thompsond4c14652007-07-26 10:41:15 -0700413 mutex_unlock(&edac_pci_ctls_mutex);
414
415 /* stop the workq timer */
416 edac_pci_workq_teardown(pci);
Dave Jiang91b99042007-07-19 01:49:52 -0700417
418 edac_printk(KERN_INFO, EDAC_PCI,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700419 "Removed device %d for %s %s: DEV %s\n",
Stephen Rothwell17aa7e02008-05-05 13:54:19 +1000420 pci->pci_idx, pci->mod_name, pci->ctl_name, edac_dev_name(pci));
Dave Jiang91b99042007-07-19 01:49:52 -0700421
422 return pci;
423}
424EXPORT_SYMBOL_GPL(edac_pci_del_device);
425
Doug Thompsond4c14652007-07-26 10:41:15 -0700426/*
427 * edac_pci_generic_check
428 *
429 * a Generic parity check API
430 */
Adrian Bunk1a450272008-04-29 01:03:18 -0700431static void edac_pci_generic_check(struct edac_pci_ctl_info *pci)
Dave Jiang91b99042007-07-19 01:49:52 -0700432{
Joe Perches956b9ba2012-04-29 17:08:39 -0300433 edac_dbg(4, "\n");
Dave Jiang91b99042007-07-19 01:49:52 -0700434 edac_pci_do_parity_check();
435}
436
Doug Thompsond4c14652007-07-26 10:41:15 -0700437/* free running instance index counter */
Douglas Thompsonf0440912007-07-19 01:50:19 -0700438static int edac_pci_idx;
Dave Jiang91b99042007-07-19 01:49:52 -0700439#define EDAC_PCI_GENCTL_NAME "EDAC PCI controller"
440
441struct edac_pci_gen_data {
442 int edac_idx;
443};
444
Doug Thompsond4c14652007-07-26 10:41:15 -0700445/*
446 * edac_pci_create_generic_ctl
447 *
448 * A generic constructor for a PCI parity polling device
449 * Some systems have more than one domain of PCI busses.
450 * For systems with one domain, then this API will
451 * provide for a generic poller.
452 *
453 * This routine calls the edac_pci_alloc_ctl_info() for
454 * the generic device, with default values
455 */
Douglas Thompson079708b2007-07-19 01:49:58 -0700456struct edac_pci_ctl_info *edac_pci_create_generic_ctl(struct device *dev,
Douglas Thompson052dfb42007-07-19 01:50:13 -0700457 const char *mod_name)
Dave Jiang91b99042007-07-19 01:49:52 -0700458{
459 struct edac_pci_ctl_info *pci;
460 struct edac_pci_gen_data *pdata;
461
462 pci = edac_pci_alloc_ctl_info(sizeof(*pdata), EDAC_PCI_GENCTL_NAME);
463 if (!pci)
464 return NULL;
465
466 pdata = pci->pvt_info;
467 pci->dev = dev;
468 dev_set_drvdata(pci->dev, pci);
469 pci->dev_name = pci_name(to_pci_dev(dev));
470
471 pci->mod_name = mod_name;
472 pci->ctl_name = EDAC_PCI_GENCTL_NAME;
473 pci->edac_check = edac_pci_generic_check;
474
475 pdata->edac_idx = edac_pci_idx++;
476
477 if (edac_pci_add_device(pci, pdata->edac_idx) > 0) {
Joe Perches956b9ba2012-04-29 17:08:39 -0300478 edac_dbg(3, "failed edac_pci_add_device()\n");
Dave Jiang91b99042007-07-19 01:49:52 -0700479 edac_pci_free_ctl_info(pci);
480 return NULL;
481 }
482
483 return pci;
484}
485EXPORT_SYMBOL_GPL(edac_pci_create_generic_ctl);
486
Doug Thompsond4c14652007-07-26 10:41:15 -0700487/*
488 * edac_pci_release_generic_ctl
489 *
490 * The release function of a generic EDAC PCI polling device
491 */
Dave Jiang91b99042007-07-19 01:49:52 -0700492void edac_pci_release_generic_ctl(struct edac_pci_ctl_info *pci)
493{
Joe Perches956b9ba2012-04-29 17:08:39 -0300494 edac_dbg(0, "pci mod=%s\n", pci->mod_name);
Doug Thompsond4c14652007-07-26 10:41:15 -0700495
Dave Jiang91b99042007-07-19 01:49:52 -0700496 edac_pci_del_device(pci->dev);
497 edac_pci_free_ctl_info(pci);
498}
Dave Jiang91b99042007-07-19 01:49:52 -0700499EXPORT_SYMBOL_GPL(edac_pci_release_generic_ctl);