USB: symbolserial: move private-data allocation to port_probe

Allocate port-private data in port-probe rather than in attach.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c
index 2c2bfa1..9b16489 100644 (file)
--- a/drivers/usb/serial/symbolserial.c
+++ b/drivers/usb/serial/symbolserial.c
@@ -1,6 +1,7 @@
 /*
  * Symbol USB barcode to serial driver
  *
+ * Copyright (C) 2013 Johan Hovold <jhovold@gmail.com>
  * Copyright (C) 2009 Greg Kroah-Hartman <gregkh@suse.de>
  * Copyright (C) 2009 Novell Inc.
  *
@@ -35,7 +36,7 @@ struct symbol_private {
 static void symbol_int_callback(struct urb *urb)
 {
        struct usb_serial_port *port = urb->context;
-       struct symbol_private *priv = usb_get_serial_data(port->serial);
+       struct symbol_private *priv = usb_get_serial_port_data(port);
        unsigned char *data = urb->transfer_buffer;
        int status = urb->status;
        int result;
@@ -153,30 +154,36 @@ static void symbol_unthrottle(struct tty_struct *tty)
 
 static int symbol_startup(struct usb_serial *serial)
 {
-       struct symbol_private *priv;
-
        if (!serial->num_interrupt_in) {
                dev_err(&serial->dev->dev, "no interrupt-in endpoint\n");
                return -ENODEV;
        }
 
-       /* create our private serial structure */
+       return 0;
+}
+
+static int symbol_port_probe(struct usb_serial_port *port)
+{
+       struct symbol_private *priv;
+
        priv = kzalloc(sizeof(*priv), GFP_KERNEL);
-       if (priv == NULL) {
-               dev_err(&serial->dev->dev, "%s - Out of memory\n", __func__);
+       if (!priv)
                return -ENOMEM;
-       }
+
        spin_lock_init(&priv->lock);
 
-       usb_set_serial_data(serial, priv);
+       usb_set_serial_port_data(port, priv);
+
        return 0;
 }
 
-static void symbol_release(struct usb_serial *serial)
+static int symbol_port_remove(struct usb_serial_port *port)
 {
-       struct symbol_private *priv = usb_get_serial_data(serial);
+       struct symbol_private *priv = usb_get_serial_port_data(port);
 
        kfree(priv);
+
+       return 0;
 }
 
 static struct usb_serial_driver symbol_device = {
@@ -187,9 +194,10 @@ static struct usb_serial_driver symbol_device = {
        .id_table =             id_table,
        .num_ports =            1,
        .attach =               symbol_startup,
+       .port_probe =           symbol_port_probe,
+       .port_remove =          symbol_port_remove,
        .open =                 symbol_open,
        .close =                symbol_close,
-       .release =              symbol_release,
        .throttle =             symbol_throttle,
        .unthrottle =           symbol_unthrottle,
        .read_int_callback =    symbol_int_callback,