opal: Remove events notifier
All users of the old opal events notifier have been converted over to
the irq domain so remove the event notifier functions.
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/platforms/powernv/opal.c b/arch/powerpc/platforms/powernv/opal.c
index cd5718b..8403307 100644
--- a/arch/powerpc/platforms/powernv/opal.c
+++ b/arch/powerpc/platforms/powernv/opal.c
@@ -53,11 +53,7 @@
struct device_node *opal_node;
static DEFINE_SPINLOCK(opal_write_lock);
-static ATOMIC_NOTIFIER_HEAD(opal_notifier_head);
static struct atomic_notifier_head opal_msg_notifier_head[OPAL_MSG_TYPE_MAX];
-static DEFINE_SPINLOCK(opal_notifier_lock);
-static uint64_t last_notified_mask = 0x0ul;
-static atomic_t opal_notifier_hold = ATOMIC_INIT(0);
static uint32_t opal_heartbeat;
static void opal_reinit_cores(void)
@@ -223,82 +219,6 @@
}
machine_early_initcall(powernv, opal_register_exception_handlers);
-int opal_notifier_register(struct notifier_block *nb)
-{
- if (!nb) {
- pr_warning("%s: Invalid argument (%p)\n",
- __func__, nb);
- return -EINVAL;
- }
-
- atomic_notifier_chain_register(&opal_notifier_head, nb);
- return 0;
-}
-EXPORT_SYMBOL_GPL(opal_notifier_register);
-
-int opal_notifier_unregister(struct notifier_block *nb)
-{
- if (!nb) {
- pr_warning("%s: Invalid argument (%p)\n",
- __func__, nb);
- return -EINVAL;
- }
-
- atomic_notifier_chain_unregister(&opal_notifier_head, nb);
- return 0;
-}
-EXPORT_SYMBOL_GPL(opal_notifier_unregister);
-
-void opal_do_notifier(uint64_t events)
-{
- unsigned long flags;
- uint64_t changed_mask;
-
- if (atomic_read(&opal_notifier_hold))
- return;
-
- spin_lock_irqsave(&opal_notifier_lock, flags);
- changed_mask = last_notified_mask ^ events;
- last_notified_mask = events;
- spin_unlock_irqrestore(&opal_notifier_lock, flags);
-
- /*
- * We feed with the event bits and changed bits for
- * enough information to the callback.
- */
- atomic_notifier_call_chain(&opal_notifier_head,
- events, (void *)changed_mask);
-}
-
-void opal_notifier_update_evt(uint64_t evt_mask,
- uint64_t evt_val)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&opal_notifier_lock, flags);
- last_notified_mask &= ~evt_mask;
- last_notified_mask |= evt_val;
- spin_unlock_irqrestore(&opal_notifier_lock, flags);
-}
-
-void opal_notifier_enable(void)
-{
- int64_t rc;
- __be64 evt = 0;
-
- atomic_set(&opal_notifier_hold, 0);
-
- /* Process pending events */
- rc = opal_poll_events(&evt);
- if (rc == OPAL_SUCCESS && evt)
- opal_do_notifier(be64_to_cpu(evt));
-}
-
-void opal_notifier_disable(void)
-{
- atomic_set(&opal_notifier_hold, 1);
-}
-
/*
* Opal message notifier based on message type. Allow subscribers to get
* notified for specific messgae type.
@@ -570,10 +490,8 @@
local_paca->hmi_event_available = 0;
rc = opal_poll_events(&evt);
- if (rc == OPAL_SUCCESS && evt) {
- opal_do_notifier(be64_to_cpu(evt));
+ if (rc == OPAL_SUCCESS && evt)
opal_handle_events(be64_to_cpu(evt));
- }
return 1;
}