1 files changed, 38 insertions, 95 deletions

diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 43d8ddb2d679..3677495c4f91 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -72,7 +72,6 @@ static int get_power_status	(struct hotplug_slot *slot, u8 *value);
 static int get_attention_status	(struct hotplug_slot *slot, u8 *value);
 static int get_latch_status	(struct hotplug_slot *slot, u8 *value);
 static int get_adapter_status	(struct hotplug_slot *slot, u8 *value);
-static int get_address		(struct hotplug_slot *slot, u32 *value);
 static int get_max_bus_speed	(struct hotplug_slot *slot, enum pci_bus_speed *value);
 static int get_cur_bus_speed	(struct hotplug_slot *slot, enum pci_bus_speed *value);
 
@@ -85,7 +84,6 @@ static struct hotplug_slot_ops pciehp_hotplug_slot_ops = {
 	.get_attention_status =	get_attention_status,
 	.get_latch_status =	get_latch_status,
 	.get_adapter_status =	get_adapter_status,
-	.get_address =		get_address,
   	.get_max_bus_speed =	get_max_bus_speed,
   	.get_cur_bus_speed =	get_cur_bus_speed,
 };
@@ -185,23 +183,10 @@ static struct hotplug_slot_attribute hotplug_slot_attr_lock = {
  */
 static void release_slot(struct hotplug_slot *hotplug_slot)
 {
-	struct slot *slot = hotplug_slot->private;
-
 	dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
 
-	kfree(slot->hotplug_slot->info);
-	kfree(slot->hotplug_slot);
-	kfree(slot);
-}
-
-static void make_slot_name(struct slot *slot)
-{
-	if (pciehp_slot_with_bus)
-		snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%04d_%04d",
-			 slot->bus, slot->number);
-	else
-		snprintf(slot->hotplug_slot->name, SLOT_NAME_SIZE, "%d",
-			 slot->number);
+	kfree(hotplug_slot->info);
+	kfree(hotplug_slot);
 }
 
 static int init_slots(struct controller *ctrl)
@@ -210,56 +195,45 @@ static int init_slots(struct controller *ctrl)
 	struct hotplug_slot *hotplug_slot;
 	struct hotplug_slot_info *info;
 	int retval = -ENOMEM;
-	int i;
-
-	for (i = 0; i < ctrl->num_slots; i++) {
-		slot = kzalloc(sizeof(*slot), GFP_KERNEL);
-		if (!slot)
-			goto error;
 
+	list_for_each_entry(slot, &ctrl->slot_list, slot_list) {
 		hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
 		if (!hotplug_slot)
-			goto error_slot;
-		slot->hotplug_slot = hotplug_slot;
+			goto error;
 
 		info = kzalloc(sizeof(*info), GFP_KERNEL);
 		if (!info)
 			goto error_hpslot;
-		hotplug_slot->info = info;
-
-		hotplug_slot->name = slot->name;
-
-		slot->hp_slot = i;
-		slot->ctrl = ctrl;
-		slot->bus = ctrl->pci_dev->subordinate->number;
-		slot->device = ctrl->slot_device_offset + i;
-		slot->hpc_ops = ctrl->hpc_ops;
-		slot->number = ctrl->first_slot;
-		mutex_init(&slot->lock);
-		INIT_DELAYED_WORK(&slot->work, pciehp_queue_pushbutton_work);
 
 		/* register this slot with the hotplug pci core */
+		hotplug_slot->info = info;
+		hotplug_slot->name = slot->name;
 		hotplug_slot->private = slot;
 		hotplug_slot->release = &release_slot;
-		make_slot_name(slot);
 		hotplug_slot->ops = &pciehp_hotplug_slot_ops;
-
 		get_power_status(hotplug_slot, &info->power_status);
 		get_attention_status(hotplug_slot, &info->attention_status);
 		get_latch_status(hotplug_slot, &info->latch_status);
 		get_adapter_status(hotplug_slot, &info->adapter_status);
+		slot->hotplug_slot = hotplug_slot;
 
 		dbg("Registering bus=%x dev=%x hp_slot=%x sun=%x "
 		    "slot_device_offset=%x\n", slot->bus, slot->device,
 		    slot->hp_slot, slot->number, ctrl->slot_device_offset);
-		retval = pci_hp_register(hotplug_slot);
+		retval = pci_hp_register(hotplug_slot,
+					 ctrl->pci_dev->subordinate,
+					 slot->device);
 		if (retval) {
-			err ("pci_hp_register failed with error %d\n", retval);
+			err("pci_hp_register failed with error %d\n", retval);
+			if (retval == -EEXIST)
+				err("Failed to register slot because of name "
+				    "collision. Try \'pciehp_slot_with_bus\' "
+				    "module option.\n");
 			goto error_info;
 		}
 		/* create additional sysfs entries */
 		if (EMI(ctrl)) {
-			retval = sysfs_create_file(&hotplug_slot->kobj,
+			retval = sysfs_create_file(&hotplug_slot->pci_slot->kobj,
 				&hotplug_slot_attr_lock.attr);
 			if (retval) {
 				pci_hp_deregister(hotplug_slot);
@@ -267,8 +241,6 @@ static int init_slots(struct controller *ctrl)
 				goto error_info;
 			}
 		}
-
-		list_add(&slot->slot_list, &ctrl->slot_list);
 	}
 
 	return 0;
@@ -276,27 +248,18 @@ error_info:
 	kfree(info);
 error_hpslot:
 	kfree(hotplug_slot);
-error_slot:
-	kfree(slot);
 error:
 	return retval;
 }
 
 static void cleanup_slots(struct controller *ctrl)
 {
-	struct list_head *tmp;
-	struct list_head *next;
 	struct slot *slot;
 
-	list_for_each_safe(tmp, next, &ctrl->slot_list) {
-		slot = list_entry(tmp, struct slot, slot_list);
-		list_del(&slot->slot_list);
+	list_for_each_entry(slot, &ctrl->slot_list, slot_list) {
 		if (EMI(ctrl))
-			sysfs_remove_file(&slot->hotplug_slot->kobj,
+			sysfs_remove_file(&slot->hotplug_slot->pci_slot->kobj,
 				&hotplug_slot_attr_lock.attr);
-		cancel_delayed_work(&slot->work);
-		flush_scheduled_work();
-		flush_workqueue(pciehp_wq);
 		pci_hp_deregister(slot->hotplug_slot);
 	}
 }
@@ -394,19 +357,8 @@ static int get_adapter_status(struct hotplug_slot *hotplug_slot, u8 *value)
 	return 0;
 }
 
-static int get_address(struct hotplug_slot *hotplug_slot, u32 *value)
-{
-	struct slot *slot = hotplug_slot->private;
-	struct pci_bus *bus = slot->ctrl->pci_dev->subordinate;
-
-	dbg("%s - physical_slot = %s\n", __func__, hotplug_slot->name);
-
-	*value = (pci_domain_nr(bus) << 16) | (slot->bus << 8) | slot->device;
-
-	return 0;
-}
-
-static int get_max_bus_speed(struct hotplug_slot *hotplug_slot, enum pci_bus_speed *value)
+static int get_max_bus_speed(struct hotplug_slot *hotplug_slot,
+				enum pci_bus_speed *value)
 {
 	struct slot *slot = hotplug_slot->private;
 	int retval;
@@ -440,34 +392,30 @@ static int pciehp_probe(struct pcie_device *dev, const struct pcie_port_service_
 	struct controller *ctrl;
 	struct slot *t_slot;
 	u8 value;
-	struct pci_dev *pdev;
+	struct pci_dev *pdev = dev->port;
 
-	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
-	if (!ctrl) {
-		err("%s : out of memory\n", __func__);
+	if (pciehp_force)
+		dbg("Bypassing BIOS check for pciehp use on %s\n",
+		    pci_name(pdev));
+	else if (pciehp_get_hp_hw_control_from_firmware(pdev))
 		goto err_out_none;
-	}
-	INIT_LIST_HEAD(&ctrl->slot_list);
-
-	pdev = dev->port;
-	ctrl->pci_dev = pdev;
 
-	rc = pcie_init(ctrl, dev);
-	if (rc) {
+	ctrl = pcie_init(dev);
+	if (!ctrl) {
 		dbg("%s: controller initialization failed\n", PCIE_MODULE_NAME);
-		goto err_out_free_ctrl;
+		goto err_out_none;
 	}
-
-	pci_set_drvdata(pdev, ctrl);
-
-	dbg("%s: ctrl bus=0x%x, device=%x, function=%x, irq=%x\n",
-	    __func__, pdev->bus->number, PCI_SLOT(pdev->devfn),
-	    PCI_FUNC(pdev->devfn), pdev->irq);
+	set_service_data(dev, ctrl);
 
 	/* Setup the slot information structures */
 	rc = init_slots(ctrl);
 	if (rc) {
-		err("%s: slot initialization failed\n", PCIE_MODULE_NAME);
+		if (rc == -EBUSY)
+			warn("%s: slot already registered by another "
+				"hotplug driver\n", PCIE_MODULE_NAME);
+		else
+			err("%s: slot initialization failed\n",
+				PCIE_MODULE_NAME);
 		goto err_out_release_ctlr;
 	}
 
@@ -491,20 +439,16 @@ err_out_free_ctrl_slot:
 	cleanup_slots(ctrl);
 err_out_release_ctlr:
 	ctrl->hpc_ops->release_ctlr(ctrl);
-err_out_free_ctrl:
-	kfree(ctrl);
 err_out_none:
 	return -ENODEV;
 }
 
 static void pciehp_remove (struct pcie_device *dev)
 {
-	struct pci_dev *pdev = dev->port;
-	struct controller *ctrl = pci_get_drvdata(pdev);
+	struct controller *ctrl = get_service_data(dev);
 
 	cleanup_slots(ctrl);
 	ctrl->hpc_ops->release_ctlr(ctrl);
-	kfree(ctrl);
 }
 
 #ifdef CONFIG_PM
@@ -518,13 +462,12 @@ static int pciehp_resume (struct pcie_device *dev)
 {
 	printk("%s ENTRY\n", __func__);
 	if (pciehp_force) {
-		struct pci_dev *pdev = dev->port;
-		struct controller *ctrl = pci_get_drvdata(pdev);
+		struct controller *ctrl = get_service_data(dev);
 		struct slot *t_slot;
 		u8 status;
 
 		/* reinitialize the chipset's event detection logic */
-		pcie_init_hardware_part2(ctrl, dev);
+		pcie_enable_notification(ctrl);
 
 		t_slot = pciehp_find_slot(ctrl, ctrl->slot_device_offset);