[PATCH] shpchp - replace kmalloc() with kzalloc() and cleanup arg of sizeof()

This patch replaces kmalloc() and memset() pair with kzalloc() and
cleans up the arg of sizeof() in SHPCHP driver.
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/pci/hotplug/shpchp_core.c

@@ -117,22 +117,18 @@ static int init_slots(struct controller *ctrl)
 	u32 sun;
 
 	for (i = 0; i < ctrl->num_slots; i++) {
-		slot = kmalloc(sizeof(struct slot), GFP_KERNEL);
+		slot = kzalloc(sizeof(*slot), GFP_KERNEL);
 		if (!slot)
 			goto error;
-		memset(slot, 0, sizeof(struct slot));
 
-		hotplug_slot = kmalloc(sizeof(struct hotplug_slot),
-				       GFP_KERNEL);
+		hotplug_slot = kzalloc(sizeof(*hotplug_slot), GFP_KERNEL);
 		if (!hotplug_slot)
 			goto error_slot;
-		memset(hotplug_slot, 0, sizeof(struct hotplug_slot));
 		slot->hotplug_slot = hotplug_slot;
 
-		info = kmalloc(sizeof(struct hotplug_slot_info), GFP_KERNEL);
+		info = kzalloc(sizeof(*info), GFP_KERNEL);
 		if (!info)
 			goto error_hpslot;
-		memset(info, 0, sizeof (struct hotplug_slot_info));
 		hotplug_slot->info = info;
 
 		name = kmalloc(SLOT_NAME_SIZE, GFP_KERNEL);
@@ -383,12 +379,11 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (!is_shpc_capable(pdev))
 		return -ENODEV;
 
-	ctrl = kmalloc(sizeof(struct controller), GFP_KERNEL);
+	ctrl = kzalloc(sizeof(*ctrl), GFP_KERNEL);
 	if (!ctrl) {
 		err("%s : out of memory\n", __FUNCTION__);
 		goto err_out_none;
 	}
-	memset(ctrl, 0, sizeof(struct controller));
 	INIT_LIST_HEAD(&ctrl->slot_list);
 
 	rc = shpc_init(ctrl, pdev);
@@ -400,7 +395,7 @@ static int shpc_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	pci_set_drvdata(pdev, ctrl);
 
-	ctrl->pci_bus = kmalloc(sizeof (*ctrl->pci_bus), GFP_KERNEL);
+	ctrl->pci_bus = kmalloc(sizeof(*ctrl->pci_bus), GFP_KERNEL);
 	if (!ctrl->pci_bus) {
 		err("out of memory\n");
 		rc = -ENOMEM;

drivers/pci/hotplug/shpchp_hpc.c

@@ -1390,15 +1390,13 @@ int shpc_init(struct controller * ctrl, struct pci_dev * pdev)
 	ctrl->pci_dev = pdev;  /* pci_dev of the P2P bridge */
 
 	spin_lock_init(&list_lock);
-	php_ctlr = (struct php_ctlr_state_s *) kmalloc(sizeof(struct php_ctlr_state_s), GFP_KERNEL);
+	php_ctlr = kzalloc(sizeof(*php_ctlr), GFP_KERNEL);
 
 	if (!php_ctlr) {	/* allocate controller state data */
 		err("%s: HPC controller memory allocation error!\n", __FUNCTION__);
 		goto abort;
 	}
 
-	memset(php_ctlr, 0, sizeof(struct php_ctlr_state_s));
-
 	php_ctlr->pci_dev = pdev;	/* save pci_dev in context */
 
 	if ((pdev->vendor == PCI_VENDOR_ID_AMD) || (pdev->device ==