Staging: gasket: Use temporaries to reduce line length.

Using temporaries for gasket_page_table entries to remove scnprintf()
statements and reduce line length, as suggested by Joe Perches. Thanks!

Signed-off-by: Sandro Volery <sandro@volery.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20190910061928.GA9623@volery
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/gasket/apex_driver.c

@@ -509,6 +509,8 @@ static ssize_t sysfs_show(struct device *device, struct device_attribute *attr,
 	struct gasket_dev *gasket_dev;
 	struct gasket_sysfs_attribute *gasket_attr;
 	enum sysfs_attribute_type type;
+	struct gasket_page_table *gpt;
+	uint val;
 
 	gasket_dev = gasket_sysfs_get_device_data(device);
 	if (!gasket_dev) {
@@ -524,29 +526,25 @@ static ssize_t sysfs_show(struct device *device, struct device_attribute *attr,
 	}
 
 	type = (enum sysfs_attribute_type)gasket_attr->data.attr_type;
+	gpt = gasket_dev->page_table[0];
 	switch (type) {
 	case ATTR_KERNEL_HIB_PAGE_TABLE_SIZE:
-		ret = scnprintf(buf, PAGE_SIZE, "%u\n",
-				gasket_page_table_num_entries(
-					gasket_dev->page_table[0]));
+		val = gasket_page_table_num_entries(gpt);
 		break;
 	case ATTR_KERNEL_HIB_SIMPLE_PAGE_TABLE_SIZE:
-		ret = scnprintf(buf, PAGE_SIZE, "%u\n",
-				gasket_page_table_num_simple_entries(
-					gasket_dev->page_table[0]));
+		val = gasket_page_table_num_simple_entries(gpt);
 		break;
 	case ATTR_KERNEL_HIB_NUM_ACTIVE_PAGES:
-		ret = scnprintf(buf, PAGE_SIZE, "%u\n",
-				gasket_page_table_num_active_pages(
-					gasket_dev->page_table[0]));
+		val = gasket_page_table_num_active_pages(gpt);
 		break;
 	default:
 		dev_dbg(gasket_dev->dev, "Unknown attribute: %s\n",
 			attr->attr.name);
 		ret = 0;
-		break;
+		goto exit;
 	}
-
+	ret = scnprintf(buf, PAGE_SIZE, "%u\n", val);
+exit:
 	gasket_sysfs_put_attr(device, gasket_attr);
 	gasket_sysfs_put_device_data(device, gasket_dev);
 	return ret;