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67 lines
1.5 KiB
C
67 lines
1.5 KiB
C
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/*
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* usb port device code
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*
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* Copyright (C) 2012 Intel Corp
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*
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* Author: Lan Tianyu <tianyu.lan@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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*/
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#include "hub.h"
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static void usb_port_device_release(struct device *dev)
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{
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struct usb_port *port_dev = to_usb_port(dev);
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kfree(port_dev);
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}
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struct device_type usb_port_device_type = {
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.name = "usb_port",
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.release = usb_port_device_release,
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};
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int usb_hub_create_port_device(struct usb_hub *hub, int port1)
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{
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struct usb_port *port_dev = NULL;
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int retval;
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port_dev = kzalloc(sizeof(*port_dev), GFP_KERNEL);
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if (!port_dev) {
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retval = -ENOMEM;
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goto exit;
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}
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hub->ports[port1 - 1] = port_dev;
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port_dev->dev.parent = hub->intfdev;
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port_dev->dev.type = &usb_port_device_type;
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dev_set_name(&port_dev->dev, "port%d", port1);
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retval = device_register(&port_dev->dev);
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if (retval)
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goto error_register;
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return 0;
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error_register:
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put_device(&port_dev->dev);
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exit:
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return retval;
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}
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void usb_hub_remove_port_device(struct usb_hub *hub,
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int port1)
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{
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device_unregister(&hub->ports[port1 - 1]->dev);
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}
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