2 * edac_mc kernel module
3 * (C) 2005, 2006 Linux Networx (http://lnxi.com)
4 * This file may be distributed under the terms of the
5 * GNU General Public License.
7 * Written Doug Thompson <norsk5@xmission.com>
11 #include <linux/module.h>
12 #include <linux/sysdev.h>
13 #include <linux/ctype.h>
16 #include "edac_module.h"
18 /* MC EDAC Controls, setable by module parameter, and sysfs */
19 static int log_ue = 1;
20 static int log_ce = 1;
21 static int panic_on_ue;
22 static int poll_msec = 1000;
24 /* Getter functions for above */
35 int edac_get_panic_on_ue()
40 int edac_get_poll_msec()
45 /* Parameter declarations for above */
46 module_param(panic_on_ue, int, 0644);
47 MODULE_PARM_DESC(panic_on_ue, "Panic on uncorrected error: 0=off 1=on");
48 module_param(log_ue, int, 0644);
49 MODULE_PARM_DESC(log_ue, "Log uncorrectable error to console: 0=off 1=on");
50 module_param(log_ce, int, 0644);
51 MODULE_PARM_DESC(log_ce, "Log correctable error to console: 0=off 1=on");
52 module_param(poll_msec, int, 0644);
53 MODULE_PARM_DESC(poll_msec, "Polling period in milliseconds");
57 * various constants for Memory Controllers
59 static const char *mem_types[] = {
60 [MEM_EMPTY] = "Empty",
61 [MEM_RESERVED] = "Reserved",
62 [MEM_UNKNOWN] = "Unknown",
66 [MEM_SDR] = "Unbuffered-SDR",
67 [MEM_RDR] = "Registered-SDR",
68 [MEM_DDR] = "Unbuffered-DDR",
69 [MEM_RDDR] = "Registered-DDR",
73 static const char *dev_types[] = {
74 [DEV_UNKNOWN] = "Unknown",
84 static const char *edac_caps[] = {
85 [EDAC_UNKNOWN] = "Unknown",
87 [EDAC_RESERVED] = "Reserved",
88 [EDAC_PARITY] = "PARITY",
90 [EDAC_SECDED] = "SECDED",
91 [EDAC_S2ECD2ED] = "S2ECD2ED",
92 [EDAC_S4ECD4ED] = "S4ECD4ED",
93 [EDAC_S8ECD8ED] = "S8ECD8ED",
94 [EDAC_S16ECD16ED] = "S16ECD16ED"
98 * sysfs object: /sys/devices/system/edac
99 * need to export to other files in this modules
101 struct sysdev_class edac_class = {
102 set_kset_name("edac"),
106 * /sys/devices/system/edac/mc
108 static struct kobject edac_memctrl_kobj;
110 /* We use these to wait for the reference counts on edac_memctrl_kobj and
111 * edac_pci_kobj to reach 0.
113 static struct completion edac_memctrl_kobj_complete;
116 * /sys/devices/system/edac/mc;
117 * data structures and methods
119 static ssize_t memctrl_int_show(void *ptr, char *buffer)
121 int *value = (int*) ptr;
122 return sprintf(buffer, "%u\n", *value);
125 static ssize_t memctrl_int_store(void *ptr, const char *buffer, size_t count)
127 int *value = (int*) ptr;
129 if (isdigit(*buffer))
130 *value = simple_strtoul(buffer, NULL, 0);
135 struct memctrl_dev_attribute {
136 struct attribute attr;
138 ssize_t (*show)(void *,char *);
139 ssize_t (*store)(void *, const char *, size_t);
142 /* Set of show/store abstract level functions for memory control object */
143 static ssize_t memctrl_dev_show(struct kobject *kobj,
144 struct attribute *attr, char *buffer)
146 struct memctrl_dev_attribute *memctrl_dev;
147 memctrl_dev = (struct memctrl_dev_attribute*)attr;
149 if (memctrl_dev->show)
150 return memctrl_dev->show(memctrl_dev->value, buffer);
155 static ssize_t memctrl_dev_store(struct kobject *kobj, struct attribute *attr,
156 const char *buffer, size_t count)
158 struct memctrl_dev_attribute *memctrl_dev;
159 memctrl_dev = (struct memctrl_dev_attribute*)attr;
161 if (memctrl_dev->store)
162 return memctrl_dev->store(memctrl_dev->value, buffer, count);
167 static struct sysfs_ops memctrlfs_ops = {
168 .show = memctrl_dev_show,
169 .store = memctrl_dev_store
172 #define MEMCTRL_ATTR(_name,_mode,_show,_store) \
173 static struct memctrl_dev_attribute attr_##_name = { \
174 .attr = {.name = __stringify(_name), .mode = _mode }, \
180 #define MEMCTRL_STRING_ATTR(_name,_data,_mode,_show,_store) \
181 static struct memctrl_dev_attribute attr_##_name = { \
182 .attr = {.name = __stringify(_name), .mode = _mode }, \
188 /* csrow<id> control files */
189 MEMCTRL_ATTR(panic_on_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store);
190 MEMCTRL_ATTR(log_ue,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store);
191 MEMCTRL_ATTR(log_ce,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store);
192 MEMCTRL_ATTR(poll_msec,S_IRUGO|S_IWUSR,memctrl_int_show,memctrl_int_store);
194 /* Base Attributes of the memory ECC object */
195 static struct memctrl_dev_attribute *memctrl_attr[] = {
203 /* Main MC kobject release() function */
204 static void edac_memctrl_master_release(struct kobject *kobj)
206 debugf1("%s()\n", __func__);
207 complete(&edac_memctrl_kobj_complete);
210 static struct kobj_type ktype_memctrl = {
211 .release = edac_memctrl_master_release,
212 .sysfs_ops = &memctrlfs_ops,
213 .default_attrs = (struct attribute **) memctrl_attr,
216 /* Initialize the main sysfs entries for edac:
217 * /sys/devices/system/edac
224 int edac_sysfs_memctrl_setup(void)
228 debugf1("%s()\n", __func__);
230 /* create the /sys/devices/system/edac directory */
231 err = sysdev_class_register(&edac_class);
234 debugf1("%s() error=%d\n", __func__, err);
238 /* Init the MC's kobject */
239 memset(&edac_memctrl_kobj, 0, sizeof (edac_memctrl_kobj));
240 edac_memctrl_kobj.parent = &edac_class.kset.kobj;
241 edac_memctrl_kobj.ktype = &ktype_memctrl;
243 /* generate sysfs "..../edac/mc" */
244 err = kobject_set_name(&edac_memctrl_kobj,"mc");
249 /* FIXME: maybe new sysdev_create_subdir() */
250 err = kobject_register(&edac_memctrl_kobj);
253 debugf1("Failed to register '.../edac/mc'\n");
257 debugf1("Registered '.../edac/mc' kobject\n");
262 sysdev_class_unregister(&edac_class);
268 * the '..../edac/mc' kobject followed by '..../edac' itself
270 void edac_sysfs_memctrl_teardown(void)
272 debugf0("MC: " __FILE__ ": %s()\n", __func__);
274 /* Unregister the MC's kobject and wait for reference count to reach 0.
276 init_completion(&edac_memctrl_kobj_complete);
277 kobject_unregister(&edac_memctrl_kobj);
278 wait_for_completion(&edac_memctrl_kobj_complete);
280 /* Unregister the 'edac' object */
281 sysdev_class_unregister(&edac_class);
285 /* EDAC sysfs CSROW data structures and methods
288 /* Set of more default csrow<id> attribute show/store functions */
289 static ssize_t csrow_ue_count_show(struct csrow_info *csrow, char *data, int private)
291 return sprintf(data,"%u\n", csrow->ue_count);
294 static ssize_t csrow_ce_count_show(struct csrow_info *csrow, char *data, int private)
296 return sprintf(data,"%u\n", csrow->ce_count);
299 static ssize_t csrow_size_show(struct csrow_info *csrow, char *data, int private)
301 return sprintf(data,"%u\n", PAGES_TO_MiB(csrow->nr_pages));
304 static ssize_t csrow_mem_type_show(struct csrow_info *csrow, char *data, int private)
306 return sprintf(data,"%s\n", mem_types[csrow->mtype]);
309 static ssize_t csrow_dev_type_show(struct csrow_info *csrow, char *data, int private)
311 return sprintf(data,"%s\n", dev_types[csrow->dtype]);
314 static ssize_t csrow_edac_mode_show(struct csrow_info *csrow, char *data, int private)
316 return sprintf(data,"%s\n", edac_caps[csrow->edac_mode]);
319 /* show/store functions for DIMM Label attributes */
320 static ssize_t channel_dimm_label_show(struct csrow_info *csrow,
321 char *data, int channel)
323 return snprintf(data, EDAC_MC_LABEL_LEN,"%s",
324 csrow->channels[channel].label);
327 static ssize_t channel_dimm_label_store(struct csrow_info *csrow,
332 ssize_t max_size = 0;
334 max_size = min((ssize_t)count,(ssize_t)EDAC_MC_LABEL_LEN-1);
335 strncpy(csrow->channels[channel].label, data, max_size);
336 csrow->channels[channel].label[max_size] = '\0';
341 /* show function for dynamic chX_ce_count attribute */
342 static ssize_t channel_ce_count_show(struct csrow_info *csrow,
346 return sprintf(data, "%u\n", csrow->channels[channel].ce_count);
349 /* csrow specific attribute structure */
350 struct csrowdev_attribute {
351 struct attribute attr;
352 ssize_t (*show)(struct csrow_info *,char *,int);
353 ssize_t (*store)(struct csrow_info *, const char *,size_t,int);
357 #define to_csrow(k) container_of(k, struct csrow_info, kobj)
358 #define to_csrowdev_attr(a) container_of(a, struct csrowdev_attribute, attr)
360 /* Set of show/store higher level functions for default csrow attributes */
361 static ssize_t csrowdev_show(struct kobject *kobj,
362 struct attribute *attr,
365 struct csrow_info *csrow = to_csrow(kobj);
366 struct csrowdev_attribute *csrowdev_attr = to_csrowdev_attr(attr);
368 if (csrowdev_attr->show)
369 return csrowdev_attr->show(csrow,
371 csrowdev_attr->private);
375 static ssize_t csrowdev_store(struct kobject *kobj, struct attribute *attr,
376 const char *buffer, size_t count)
378 struct csrow_info *csrow = to_csrow(kobj);
379 struct csrowdev_attribute * csrowdev_attr = to_csrowdev_attr(attr);
381 if (csrowdev_attr->store)
382 return csrowdev_attr->store(csrow,
385 csrowdev_attr->private);
389 static struct sysfs_ops csrowfs_ops = {
390 .show = csrowdev_show,
391 .store = csrowdev_store
394 #define CSROWDEV_ATTR(_name,_mode,_show,_store,_private) \
395 static struct csrowdev_attribute attr_##_name = { \
396 .attr = {.name = __stringify(_name), .mode = _mode }, \
399 .private = _private, \
402 /* default cwrow<id>/attribute files */
403 CSROWDEV_ATTR(size_mb,S_IRUGO,csrow_size_show,NULL,0);
404 CSROWDEV_ATTR(dev_type,S_IRUGO,csrow_dev_type_show,NULL,0);
405 CSROWDEV_ATTR(mem_type,S_IRUGO,csrow_mem_type_show,NULL,0);
406 CSROWDEV_ATTR(edac_mode,S_IRUGO,csrow_edac_mode_show,NULL,0);
407 CSROWDEV_ATTR(ue_count,S_IRUGO,csrow_ue_count_show,NULL,0);
408 CSROWDEV_ATTR(ce_count,S_IRUGO,csrow_ce_count_show,NULL,0);
410 /* default attributes of the CSROW<id> object */
411 static struct csrowdev_attribute *default_csrow_attr[] = {
422 /* possible dynamic channel DIMM Label attribute files */
423 CSROWDEV_ATTR(ch0_dimm_label,S_IRUGO|S_IWUSR,
424 channel_dimm_label_show,
425 channel_dimm_label_store,
427 CSROWDEV_ATTR(ch1_dimm_label,S_IRUGO|S_IWUSR,
428 channel_dimm_label_show,
429 channel_dimm_label_store,
431 CSROWDEV_ATTR(ch2_dimm_label,S_IRUGO|S_IWUSR,
432 channel_dimm_label_show,
433 channel_dimm_label_store,
435 CSROWDEV_ATTR(ch3_dimm_label,S_IRUGO|S_IWUSR,
436 channel_dimm_label_show,
437 channel_dimm_label_store,
439 CSROWDEV_ATTR(ch4_dimm_label,S_IRUGO|S_IWUSR,
440 channel_dimm_label_show,
441 channel_dimm_label_store,
443 CSROWDEV_ATTR(ch5_dimm_label,S_IRUGO|S_IWUSR,
444 channel_dimm_label_show,
445 channel_dimm_label_store,
448 /* Total possible dynamic DIMM Label attribute file table */
449 static struct csrowdev_attribute *dynamic_csrow_dimm_attr[] = {
450 &attr_ch0_dimm_label,
451 &attr_ch1_dimm_label,
452 &attr_ch2_dimm_label,
453 &attr_ch3_dimm_label,
454 &attr_ch4_dimm_label,
458 /* possible dynamic channel ce_count attribute files */
459 CSROWDEV_ATTR(ch0_ce_count,S_IRUGO|S_IWUSR,
460 channel_ce_count_show,
463 CSROWDEV_ATTR(ch1_ce_count,S_IRUGO|S_IWUSR,
464 channel_ce_count_show,
467 CSROWDEV_ATTR(ch2_ce_count,S_IRUGO|S_IWUSR,
468 channel_ce_count_show,
471 CSROWDEV_ATTR(ch3_ce_count,S_IRUGO|S_IWUSR,
472 channel_ce_count_show,
475 CSROWDEV_ATTR(ch4_ce_count,S_IRUGO|S_IWUSR,
476 channel_ce_count_show,
479 CSROWDEV_ATTR(ch5_ce_count,S_IRUGO|S_IWUSR,
480 channel_ce_count_show,
484 /* Total possible dynamic ce_count attribute file table */
485 static struct csrowdev_attribute *dynamic_csrow_ce_count_attr[] = {
495 #define EDAC_NR_CHANNELS 6
497 /* Create dynamic CHANNEL files, indexed by 'chan', under specifed CSROW */
498 static int edac_create_channel_files(struct kobject *kobj, int chan)
502 if (chan >= EDAC_NR_CHANNELS)
505 /* create the DIMM label attribute file */
506 err = sysfs_create_file(kobj,
507 (struct attribute *) dynamic_csrow_dimm_attr[chan]);
510 /* create the CE Count attribute file */
511 err = sysfs_create_file(kobj,
512 (struct attribute *) dynamic_csrow_ce_count_attr[chan]);
514 debugf1("%s() dimm labels and ce_count files created", __func__);
520 /* No memory to release for this kobj */
521 static void edac_csrow_instance_release(struct kobject *kobj)
523 struct csrow_info *cs;
525 cs = container_of(kobj, struct csrow_info, kobj);
526 complete(&cs->kobj_complete);
529 /* the kobj_type instance for a CSROW */
530 static struct kobj_type ktype_csrow = {
531 .release = edac_csrow_instance_release,
532 .sysfs_ops = &csrowfs_ops,
533 .default_attrs = (struct attribute **) default_csrow_attr,
536 /* Create a CSROW object under specifed edac_mc_device */
537 static int edac_create_csrow_object(
538 struct kobject *edac_mci_kobj,
539 struct csrow_info *csrow,
545 memset(&csrow->kobj, 0, sizeof(csrow->kobj));
547 /* generate ..../edac/mc/mc<id>/csrow<index> */
549 csrow->kobj.parent = edac_mci_kobj;
550 csrow->kobj.ktype = &ktype_csrow;
552 /* name this instance of csrow<id> */
553 err = kobject_set_name(&csrow->kobj,"csrow%d",index);
557 /* Instanstiate the csrow object */
558 err = kobject_register(&csrow->kobj);
560 /* Create the dyanmic attribute files on this csrow,
561 * namely, the DIMM labels and the channel ce_count
563 for (chan = 0; chan < csrow->nr_channels; chan++) {
564 err = edac_create_channel_files(&csrow->kobj,chan);
574 /* default sysfs methods and data structures for the main MCI kobject */
576 static ssize_t mci_reset_counters_store(struct mem_ctl_info *mci,
577 const char *data, size_t count)
581 mci->ue_noinfo_count = 0;
582 mci->ce_noinfo_count = 0;
586 for (row = 0; row < mci->nr_csrows; row++) {
587 struct csrow_info *ri = &mci->csrows[row];
592 for (chan = 0; chan < ri->nr_channels; chan++)
593 ri->channels[chan].ce_count = 0;
596 mci->start_time = jiffies;
600 /* memory scrubbing */
601 static ssize_t mci_sdram_scrub_rate_store(struct mem_ctl_info *mci,
602 const char *data, size_t count)
606 if (mci->set_sdram_scrub_rate) {
608 memctrl_int_store(&bandwidth, data, count);
610 if (!(*mci->set_sdram_scrub_rate)(mci, &bandwidth)) {
611 edac_printk(KERN_DEBUG, EDAC_MC,
612 "Scrub rate set successfully, applied: %d\n",
615 /* FIXME: error codes maybe? */
616 edac_printk(KERN_DEBUG, EDAC_MC,
617 "Scrub rate set FAILED, could not apply: %d\n",
621 /* FIXME: produce "not implemented" ERROR for user-side. */
622 edac_printk(KERN_WARNING, EDAC_MC,
623 "Memory scrubbing 'set'control is not implemented!\n");
628 static ssize_t mci_sdram_scrub_rate_show(struct mem_ctl_info *mci, char *data)
632 if (mci->get_sdram_scrub_rate) {
633 if (!(*mci->get_sdram_scrub_rate)(mci, &bandwidth)) {
634 edac_printk(KERN_DEBUG, EDAC_MC,
635 "Scrub rate successfully, fetched: %d\n",
638 /* FIXME: error codes maybe? */
639 edac_printk(KERN_DEBUG, EDAC_MC,
640 "Scrub rate fetch FAILED, got: %d\n",
644 /* FIXME: produce "not implemented" ERROR for user-side. */
645 edac_printk(KERN_WARNING, EDAC_MC,
646 "Memory scrubbing 'get' control is not implemented!\n");
648 return sprintf(data, "%d\n", bandwidth);
651 /* default attribute files for the MCI object */
652 static ssize_t mci_ue_count_show(struct mem_ctl_info *mci, char *data)
654 return sprintf(data,"%d\n", mci->ue_count);
657 static ssize_t mci_ce_count_show(struct mem_ctl_info *mci, char *data)
659 return sprintf(data,"%d\n", mci->ce_count);
662 static ssize_t mci_ce_noinfo_show(struct mem_ctl_info *mci, char *data)
664 return sprintf(data,"%d\n", mci->ce_noinfo_count);
667 static ssize_t mci_ue_noinfo_show(struct mem_ctl_info *mci, char *data)
669 return sprintf(data,"%d\n", mci->ue_noinfo_count);
672 static ssize_t mci_seconds_show(struct mem_ctl_info *mci, char *data)
674 return sprintf(data,"%ld\n", (jiffies - mci->start_time) / HZ);
677 static ssize_t mci_ctl_name_show(struct mem_ctl_info *mci, char *data)
679 return sprintf(data,"%s\n", mci->ctl_name);
682 static ssize_t mci_size_mb_show(struct mem_ctl_info *mci, char *data)
684 int total_pages, csrow_idx;
686 for (total_pages = csrow_idx = 0; csrow_idx < mci->nr_csrows;
688 struct csrow_info *csrow = &mci->csrows[csrow_idx];
690 if (!csrow->nr_pages)
693 total_pages += csrow->nr_pages;
696 return sprintf(data,"%u\n", PAGES_TO_MiB(total_pages));
699 struct mcidev_attribute {
700 struct attribute attr;
701 ssize_t (*show)(struct mem_ctl_info *,char *);
702 ssize_t (*store)(struct mem_ctl_info *, const char *,size_t);
705 #define to_mci(k) container_of(k, struct mem_ctl_info, edac_mci_kobj)
706 #define to_mcidev_attr(a) container_of(a, struct mcidev_attribute, attr)
708 /* MCI show/store functions for top most object */
709 static ssize_t mcidev_show(struct kobject *kobj, struct attribute *attr,
712 struct mem_ctl_info *mem_ctl_info = to_mci(kobj);
713 struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr);
715 if (mcidev_attr->show)
716 return mcidev_attr->show(mem_ctl_info, buffer);
721 static ssize_t mcidev_store(struct kobject *kobj, struct attribute *attr,
722 const char *buffer, size_t count)
724 struct mem_ctl_info *mem_ctl_info = to_mci(kobj);
725 struct mcidev_attribute * mcidev_attr = to_mcidev_attr(attr);
727 if (mcidev_attr->store)
728 return mcidev_attr->store(mem_ctl_info, buffer, count);
733 static struct sysfs_ops mci_ops = {
735 .store = mcidev_store
738 #define MCIDEV_ATTR(_name,_mode,_show,_store) \
739 static struct mcidev_attribute mci_attr_##_name = { \
740 .attr = {.name = __stringify(_name), .mode = _mode }, \
745 /* default Control file */
746 MCIDEV_ATTR(reset_counters,S_IWUSR,NULL,mci_reset_counters_store);
748 /* default Attribute files */
749 MCIDEV_ATTR(mc_name,S_IRUGO,mci_ctl_name_show,NULL);
750 MCIDEV_ATTR(size_mb,S_IRUGO,mci_size_mb_show,NULL);
751 MCIDEV_ATTR(seconds_since_reset,S_IRUGO,mci_seconds_show,NULL);
752 MCIDEV_ATTR(ue_noinfo_count,S_IRUGO,mci_ue_noinfo_show,NULL);
753 MCIDEV_ATTR(ce_noinfo_count,S_IRUGO,mci_ce_noinfo_show,NULL);
754 MCIDEV_ATTR(ue_count,S_IRUGO,mci_ue_count_show,NULL);
755 MCIDEV_ATTR(ce_count,S_IRUGO,mci_ce_count_show,NULL);
757 /* memory scrubber attribute file */
758 MCIDEV_ATTR(sdram_scrub_rate,S_IRUGO|S_IWUSR,mci_sdram_scrub_rate_show,mci_sdram_scrub_rate_store);
760 static struct mcidev_attribute *mci_attr[] = {
761 &mci_attr_reset_counters,
764 &mci_attr_seconds_since_reset,
765 &mci_attr_ue_noinfo_count,
766 &mci_attr_ce_noinfo_count,
769 &mci_attr_sdram_scrub_rate,
774 * Release of a MC controlling instance
776 static void edac_mci_instance_release(struct kobject *kobj)
778 struct mem_ctl_info *mci;
781 debugf0("%s() idx=%d\n", __func__, mci->mc_idx);
782 complete(&mci->kobj_complete);
785 static struct kobj_type ktype_mci = {
786 .release = edac_mci_instance_release,
787 .sysfs_ops = &mci_ops,
788 .default_attrs = (struct attribute **) mci_attr,
792 #define EDAC_DEVICE_SYMLINK "device"
795 * Create a new Memory Controller kobject instance,
796 * mc<id> under the 'mc' directory
802 int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
806 struct csrow_info *csrow;
807 struct kobject *edac_mci_kobj=&mci->edac_mci_kobj;
809 debugf0("%s() idx=%d\n", __func__, mci->mc_idx);
810 memset(edac_mci_kobj, 0, sizeof(*edac_mci_kobj));
812 /* set the name of the mc<id> object */
813 err = kobject_set_name(edac_mci_kobj,"mc%d",mci->mc_idx);
817 /* link to our parent the '..../edac/mc' object */
818 edac_mci_kobj->parent = &edac_memctrl_kobj;
819 edac_mci_kobj->ktype = &ktype_mci;
821 /* register the mc<id> kobject */
822 err = kobject_register(edac_mci_kobj);
826 /* create a symlink for the device */
827 err = sysfs_create_link(edac_mci_kobj, &mci->dev->kobj,
828 EDAC_DEVICE_SYMLINK);
832 /* Make directories for each CSROW object
833 * under the mc<id> kobject
835 for (i = 0; i < mci->nr_csrows; i++) {
836 csrow = &mci->csrows[i];
838 /* Only expose populated CSROWs */
839 if (csrow->nr_pages > 0) {
840 err = edac_create_csrow_object(edac_mci_kobj,csrow,i);
848 /* CSROW error: backout what has already been registered, */
850 for ( i--; i >= 0; i--) {
851 if (csrow->nr_pages > 0) {
852 init_completion(&csrow->kobj_complete);
853 kobject_unregister(&mci->csrows[i].kobj);
854 wait_for_completion(&csrow->kobj_complete);
859 init_completion(&mci->kobj_complete);
860 kobject_unregister(edac_mci_kobj);
861 wait_for_completion(&mci->kobj_complete);
866 * remove a Memory Controller instance
868 void edac_remove_sysfs_mci_device(struct mem_ctl_info *mci)
872 debugf0("%s()\n", __func__);
874 /* remove all csrow kobjects */
875 for (i = 0; i < mci->nr_csrows; i++) {
876 if (mci->csrows[i].nr_pages > 0) {
877 init_completion(&mci->csrows[i].kobj_complete);
878 kobject_unregister(&mci->csrows[i].kobj);
879 wait_for_completion(&mci->csrows[i].kobj_complete);
883 sysfs_remove_link(&mci->edac_mci_kobj, EDAC_DEVICE_SYMLINK);
884 init_completion(&mci->kobj_complete);
885 kobject_unregister(&mci->edac_mci_kobj);
886 wait_for_completion(&mci->kobj_complete);