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Diffstat (limited to 'arch/powerpc/platforms/pseries/eeh_event.c')
-rw-r--r--arch/powerpc/platforms/pseries/eeh_event.c50
1 files changed, 28 insertions, 22 deletions
diff --git a/arch/powerpc/platforms/pseries/eeh_event.c b/arch/powerpc/platforms/pseries/eeh_event.c
index 40020c65c89e..8f2d12935b99 100644
--- a/arch/powerpc/platforms/pseries/eeh_event.c
+++ b/arch/powerpc/platforms/pseries/eeh_event.c
@@ -18,6 +18,7 @@
* Copyright (c) 2005 Linas Vepstas <linas@linas.org>
*/
+#include <linux/delay.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/pci.h>
@@ -56,38 +57,43 @@ static int eeh_event_handler(void * dummy)
{
unsigned long flags;
struct eeh_event *event;
+ struct pci_dn *pdn;
daemonize ("eehd");
+ set_current_state(TASK_INTERRUPTIBLE);
- while (1) {
- set_current_state(TASK_INTERRUPTIBLE);
+ spin_lock_irqsave(&eeh_eventlist_lock, flags);
+ event = NULL;
- spin_lock_irqsave(&eeh_eventlist_lock, flags);
- event = NULL;
+ /* Unqueue the event, get ready to process. */
+ if (!list_empty(&eeh_eventlist)) {
+ event = list_entry(eeh_eventlist.next, struct eeh_event, list);
+ list_del(&event->list);
+ }
+ spin_unlock_irqrestore(&eeh_eventlist_lock, flags);
- /* Unqueue the event, get ready to process. */
- if (!list_empty(&eeh_eventlist)) {
- event = list_entry(eeh_eventlist.next, struct eeh_event, list);
- list_del(&event->list);
- }
- spin_unlock_irqrestore(&eeh_eventlist_lock, flags);
+ if (event == NULL)
+ return 0;
- if (event == NULL)
- break;
+ /* Serialize processing of EEH events */
+ mutex_lock(&eeh_event_mutex);
+ eeh_mark_slot(event->dn, EEH_MODE_RECOVERING);
- /* Serialize processing of EEH events */
- mutex_lock(&eeh_event_mutex);
- eeh_mark_slot(event->dn, EEH_MODE_RECOVERING);
+ printk(KERN_INFO "EEH: Detected PCI bus error on device %s\n",
+ pci_name(event->dev));
- printk(KERN_INFO "EEH: Detected PCI bus error on device %s\n",
- pci_name(event->dev));
+ pdn = handle_eeh_events(event);
- handle_eeh_events(event);
+ eeh_clear_slot(event->dn, EEH_MODE_RECOVERING);
+ pci_dev_put(event->dev);
+ kfree(event);
+ mutex_unlock(&eeh_event_mutex);
- eeh_clear_slot(event->dn, EEH_MODE_RECOVERING);
- pci_dev_put(event->dev);
- kfree(event);
- mutex_unlock(&eeh_event_mutex);
+ /* If there are no new errors after an hour, clear the counter. */
+ if (pdn && pdn->eeh_freeze_count>0) {
+ msleep_interruptible (3600*1000);
+ if (pdn->eeh_freeze_count>0)
+ pdn->eeh_freeze_count--;
}
return 0;