From a85796ee514954b1ef5efe8928ef38777aab8c2d Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Tue, 16 Apr 2013 18:01:30 +0200 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/symbolserial.c | 30 +++++++++++++++++++----------- 1 file changed, 19 insertions(+), 11 deletions(-) diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c index 2c2bfa1..9b16489 100644 --- 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 * Copyright (C) 2009 Greg Kroah-Hartman * 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, -- 2.7.4