5 files changed, 44 insertions, 18 deletions

diff --git a/drivers/cpufreq/powernv-cpufreq.c b/drivers/cpufreq/powernv-cpufreq.c
index 56f4bc0d209e..8646eb197cd9 100644
--- a/drivers/cpufreq/powernv-cpufreq.c
+++ b/drivers/cpufreq/powernv-cpufreq.c
@@ -902,6 +902,7 @@ static struct notifier_block powernv_cpufreq_reboot_nb = {
 void powernv_cpufreq_work_fn(struct work_struct *work)
 {
 	struct chip *chip = container_of(work, struct chip, throttle);
+	struct cpufreq_policy *policy;
 	unsigned int cpu;
 	cpumask_t mask;
 
@@ -916,12 +917,14 @@ void powernv_cpufreq_work_fn(struct work_struct *work)
 	chip->restore = false;
 	for_each_cpu(cpu, &mask) {
 		int index;
-		struct cpufreq_policy policy;
 
-		cpufreq_get_policy(&policy, cpu);
-		index = cpufreq_table_find_index_c(&policy, policy.cur);
-		powernv_cpufreq_target_index(&policy, index);
-		cpumask_andnot(&mask, &mask, policy.cpus);
+		policy = cpufreq_cpu_get(cpu);
+		if (!policy)
+			continue;
+		index = cpufreq_table_find_index_c(policy, policy->cur);
+		powernv_cpufreq_target_index(policy, index);
+		cpumask_andnot(&mask, &mask, policy->cpus);
+		cpufreq_cpu_put(policy);
 	}
 out:
 	put_online_cpus();
@@ -1080,6 +1083,12 @@ free_and_return:
 
 static inline void clean_chip_info(void)
 {
+	int i;
+
+	/* flush any pending work items */
+	if (chips)
+		for (i = 0; i < nr_chips; i++)
+			cancel_work_sync(&chips[i].throttle);
 	kfree(chips);
 }
 
@@ -1108,9 +1117,6 @@ static int __init powernv_cpufreq_init(void)
 	if (rc)
 		goto out;
 
-	register_reboot_notifier(&powernv_cpufreq_reboot_nb);
-	opal_message_notifier_register(OPAL_MSG_OCC, &powernv_cpufreq_opal_nb);
-
 	if (powernv_pstate_info.wof_enabled)
 		powernv_cpufreq_driver.boost_enabled = true;
 	else
@@ -1119,15 +1125,17 @@ static int __init powernv_cpufreq_init(void)
 	rc = cpufreq_register_driver(&powernv_cpufreq_driver);
 	if (rc) {
 		pr_info("Failed to register the cpufreq driver (%d)\n", rc);
-		goto cleanup_notifiers;
+		goto cleanup;
 	}
 
 	if (powernv_pstate_info.wof_enabled)
 		cpufreq_enable_boost_support();
 
+	register_reboot_notifier(&powernv_cpufreq_reboot_nb);
+	opal_message_notifier_register(OPAL_MSG_OCC, &powernv_cpufreq_opal_nb);
+
 	return 0;
-cleanup_notifiers:
-	unregister_all_notifiers();
+cleanup:
 	clean_chip_info();
 out:
 	pr_info("Platform driver disabled. System does not support PState control\n");
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index 977946e4e613..c5eb509c72f0 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -140,7 +140,7 @@ static void dlpar_pci_add_bus(struct device_node *dn)
 	struct pci_controller *phb = pdn->phb;
 	struct pci_dev *dev = NULL;
 
-	eeh_add_device_tree_early(pdn);
+	pseries_eeh_init_edev_recursive(pdn);
 
 	/* Add EADS device to PHB bus, adding new entry to bus->devices */
 	dev = of_create_pci_dev(dn, phb->bus, pdn->devfn);
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index e408e4021cee..6504869efabc 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -288,11 +288,10 @@ EXPORT_SYMBOL_GPL(rpaphp_check_drc_props);
 
 static int is_php_type(char *drc_type)
 {
-	unsigned long value;
 	char *endptr;
 
 	/* PCI Hotplug nodes have an integer for drc_type */
-	value = simple_strtoul(drc_type, &endptr, 10);
+	simple_strtoul(drc_type, &endptr, 10);
 	if (endptr == drc_type)
 		return 0;
 
@@ -494,6 +493,8 @@ static int enable_slot(struct hotplug_slot *hotplug_slot)
 		return retval;
 
 	if (state == PRESENT) {
+		pseries_eeh_init_edev_recursive(PCI_DN(slot->dn));
+
 		pci_lock_rescan_remove();
 		pci_hp_add_devices(slot->bus);
 		pci_unlock_rescan_remove();
diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c
index beca61badeea..c380bdacd146 100644
--- a/drivers/pci/hotplug/rpaphp_pci.c
+++ b/drivers/pci/hotplug/rpaphp_pci.c
@@ -95,8 +95,10 @@ int rpaphp_enable_slot(struct slot *slot)
 			return -EINVAL;
 		}
 
-		if (list_empty(&bus->devices))
+		if (list_empty(&bus->devices)) {
+			pseries_eeh_init_edev_recursive(PCI_DN(slot->dn));
 			pci_hp_add_devices(bus);
+		}
 
 		if (!list_empty(&bus->devices)) {
 			slot->state = CONFIGURED;
diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c
index 769e0a5d1dfc..3c6dd06ec5fb 100644
--- a/drivers/tty/ehv_bytechan.c
+++ b/drivers/tty/ehv_bytechan.c
@@ -136,6 +136,21 @@ static int find_console_handle(void)
 	return 1;
 }
 
+static unsigned int local_ev_byte_channel_send(unsigned int handle,
+					       unsigned int *count,
+					       const char *p)
+{
+	char buffer[EV_BYTE_CHANNEL_MAX_BYTES];
+	unsigned int c = *count;
+
+	if (c < sizeof(buffer)) {
+		memcpy(buffer, p, c);
+		memset(&buffer[c], 0, sizeof(buffer) - c);
+		p = buffer;
+	}
+	return ev_byte_channel_send(handle, count, p);
+}
+
 /*************************** EARLY CONSOLE DRIVER ***************************/
 
 #ifdef CONFIG_PPC_EARLY_DEBUG_EHV_BC
@@ -154,7 +169,7 @@ static void byte_channel_spin_send(const char data)
 
 	do {
 		count = 1;
-		ret = ev_byte_channel_send(CONFIG_PPC_EARLY_DEBUG_EHV_BC_HANDLE,
+		ret = local_ev_byte_channel_send(CONFIG_PPC_EARLY_DEBUG_EHV_BC_HANDLE,
 					   &count, &data);
 	} while (ret == EV_EAGAIN);
 }
@@ -221,7 +236,7 @@ static int ehv_bc_console_byte_channel_send(unsigned int handle, const char *s,
 	while (count) {
 		len = min_t(unsigned int, count, EV_BYTE_CHANNEL_MAX_BYTES);
 		do {
-			ret = ev_byte_channel_send(handle, &len, s);
+			ret = local_ev_byte_channel_send(handle, &len, s);
 		} while (ret == EV_EAGAIN);
 		count -= len;
 		s += len;
@@ -401,7 +416,7 @@ static void ehv_bc_tx_dequeue(struct ehv_bc_data *bc)
 			    CIRC_CNT_TO_END(bc->head, bc->tail, BUF_SIZE),
 			    EV_BYTE_CHANNEL_MAX_BYTES);
 
-		ret = ev_byte_channel_send(bc->handle, &len, bc->buf + bc->tail);
+		ret = local_ev_byte_channel_send(bc->handle, &len, bc->buf + bc->tail);
 
 		/* 'len' is valid only if the return code is 0 or EV_EAGAIN */
 		if (!ret || (ret == EV_EAGAIN))