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Diffstat (limited to 'drivers/uwb/neh.c')
-rw-r--r--drivers/uwb/neh.c46
1 files changed, 32 insertions, 14 deletions
diff --git a/drivers/uwb/neh.c b/drivers/uwb/neh.c
index 9b4eb64327ac..48b4ece1a627 100644
--- a/drivers/uwb/neh.c
+++ b/drivers/uwb/neh.c
@@ -254,7 +254,6 @@ error_kzalloc:
static void __uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
{
- del_timer(&neh->timer);
__uwb_rc_ctx_put(rc, neh);
list_del(&neh->list_node);
}
@@ -275,6 +274,7 @@ void uwb_rc_neh_rm(struct uwb_rc *rc, struct uwb_rc_neh *neh)
__uwb_rc_neh_rm(rc, neh);
spin_unlock_irqrestore(&rc->neh_lock, flags);
+ del_timer_sync(&neh->timer);
uwb_rc_neh_put(neh);
}
@@ -438,9 +438,10 @@ static void uwb_rc_neh_grok_event(struct uwb_rc *rc, struct uwb_rceb *rceb, size
rceb->bEventContext, size);
} else {
neh = uwb_rc_neh_lookup(rc, rceb);
- if (neh)
+ if (neh) {
+ del_timer_sync(&neh->timer);
uwb_rc_neh_cb(neh, rceb, size);
- else
+ } else
dev_warn(dev, "event 0x%02x/%04x/%02x (%zu bytes): nobody cared\n",
rceb->bEventType, le16_to_cpu(rceb->wEvent),
rceb->bEventContext, size);
@@ -562,16 +563,22 @@ EXPORT_SYMBOL_GPL(uwb_rc_neh_grok);
*/
void uwb_rc_neh_error(struct uwb_rc *rc, int error)
{
- struct uwb_rc_neh *neh, *next;
+ struct uwb_rc_neh *neh;
unsigned long flags;
- BUG_ON(error >= 0);
- spin_lock_irqsave(&rc->neh_lock, flags);
- list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
+ for (;;) {
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ if (list_empty(&rc->neh_list)) {
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+ break;
+ }
+ neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node);
__uwb_rc_neh_rm(rc, neh);
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+ del_timer_sync(&neh->timer);
uwb_rc_neh_cb(neh, NULL, error);
}
- spin_unlock_irqrestore(&rc->neh_lock, flags);
}
EXPORT_SYMBOL_GPL(uwb_rc_neh_error);
@@ -583,10 +590,14 @@ static void uwb_rc_neh_timer(unsigned long arg)
unsigned long flags;
spin_lock_irqsave(&rc->neh_lock, flags);
- __uwb_rc_neh_rm(rc, neh);
+ if (neh->context)
+ __uwb_rc_neh_rm(rc, neh);
+ else
+ neh = NULL;
spin_unlock_irqrestore(&rc->neh_lock, flags);
- uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT);
+ if (neh)
+ uwb_rc_neh_cb(neh, NULL, -ETIMEDOUT);
}
/** Initializes the @rc's neh subsystem
@@ -605,12 +616,19 @@ void uwb_rc_neh_create(struct uwb_rc *rc)
void uwb_rc_neh_destroy(struct uwb_rc *rc)
{
unsigned long flags;
- struct uwb_rc_neh *neh, *next;
+ struct uwb_rc_neh *neh;
- spin_lock_irqsave(&rc->neh_lock, flags);
- list_for_each_entry_safe(neh, next, &rc->neh_list, list_node) {
+ for (;;) {
+ spin_lock_irqsave(&rc->neh_lock, flags);
+ if (list_empty(&rc->neh_list)) {
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+ break;
+ }
+ neh = list_first_entry(&rc->neh_list, struct uwb_rc_neh, list_node);
__uwb_rc_neh_rm(rc, neh);
+ spin_unlock_irqrestore(&rc->neh_lock, flags);
+
+ del_timer_sync(&neh->timer);
uwb_rc_neh_put(neh);
}
- spin_unlock_irqrestore(&rc->neh_lock, flags);
}