Bluetooth: Use devm_kzalloc in btusb.c file

devm_kzalloc() eliminates the need to free memory explicitly
thereby saving some cleanup code.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index e272214110365510fcfcbb6f6f3f75778f65ed46..f637c2550016f72ca038707ed48868dc78a123e1 100644 (file)
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -952,7 +952,7 @@ static int btusb_probe(struct usb_interface *intf,
                        return -ENODEV;
        }
 
-       data = kzalloc(sizeof(*data), GFP_KERNEL);
+       data = devm_kzalloc(&intf->dev, sizeof(*data), GFP_KERNEL);
        if (!data)
                return -ENOMEM;
 
@@ -975,10 +975,8 @@ static int btusb_probe(struct usb_interface *intf,
                }
        }
 
-       if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
-               kfree(data);
+       if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep)
                return -ENODEV;
-       }
 
        data->cmdreq_type = USB_TYPE_CLASS;
 
@@ -998,10 +996,8 @@ static int btusb_probe(struct usb_interface *intf,
        init_usb_anchor(&data->deferred);
 
        hdev = hci_alloc_dev();
-       if (!hdev) {
-               kfree(data);
+       if (!hdev)
                return -ENOMEM;
-       }
 
        hdev->bus = HCI_USB;
        hci_set_drvdata(hdev, data);
@@ -1069,7 +1065,6 @@ static int btusb_probe(struct usb_interface *intf,
                                                        data->isoc, data);
                if (err < 0) {
                        hci_free_dev(hdev);
-                       kfree(data);
                        return err;
                }
        }
@@ -1077,7 +1072,6 @@ static int btusb_probe(struct usb_interface *intf,
        err = hci_register_dev(hdev);
        if (err < 0) {
                hci_free_dev(hdev);
-               kfree(data);
                return err;
        }
 
@@ -1110,7 +1104,6 @@ static void btusb_disconnect(struct usb_interface *intf)
                usb_driver_release_interface(&btusb_driver, data->isoc);
 
        hci_free_dev(hdev);
-       kfree(data);
 }
 
 #ifdef CONFIG_PM