forked from Minki/linux
baf26a7eae
This adds a new flag for the skb_frame_desc structure which is used to tag rts/cts frames that are generated by the driver. Through the tag we can recognize frames we have generated ourselves, so we don't report their tx status to mac80211. This patch is based on the original patch by Mattias Nissler <mattias.nissler@gmx.de>. Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
740 lines
18 KiB
C
740 lines
18 KiB
C
/*
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Copyright (C) 2004 - 2008 rt2x00 SourceForge Project
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<http://rt2x00.serialmonkey.com>
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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 as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the
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Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/*
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Module: rt2x00usb
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Abstract: rt2x00 generic usb device routines.
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/usb.h>
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#include <linux/bug.h>
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#include "rt2x00.h"
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#include "rt2x00usb.h"
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/*
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* Interfacing with the HW.
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*/
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int rt2x00usb_vendor_request(struct rt2x00_dev *rt2x00dev,
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const u8 request, const u8 requesttype,
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const u16 offset, const u16 value,
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void *buffer, const u16 buffer_length,
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const int timeout)
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{
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struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
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int status;
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unsigned int i;
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unsigned int pipe =
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(requesttype == USB_VENDOR_REQUEST_IN) ?
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usb_rcvctrlpipe(usb_dev, 0) : usb_sndctrlpipe(usb_dev, 0);
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for (i = 0; i < REGISTER_BUSY_COUNT; i++) {
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status = usb_control_msg(usb_dev, pipe, request, requesttype,
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value, offset, buffer, buffer_length,
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timeout);
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if (status >= 0)
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return 0;
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/*
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* Check for errors
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* -ENODEV: Device has disappeared, no point continuing.
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* All other errors: Try again.
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*/
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else if (status == -ENODEV)
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break;
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}
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ERROR(rt2x00dev,
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"Vendor Request 0x%02x failed for offset 0x%04x with error %d.\n",
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request, offset, status);
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return status;
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}
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EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request);
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int rt2x00usb_vendor_req_buff_lock(struct rt2x00_dev *rt2x00dev,
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const u8 request, const u8 requesttype,
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const u16 offset, void *buffer,
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const u16 buffer_length, const int timeout)
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{
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int status;
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BUG_ON(!mutex_is_locked(&rt2x00dev->usb_cache_mutex));
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/*
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* Check for Cache availability.
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*/
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if (unlikely(!rt2x00dev->csr.cache || buffer_length > CSR_CACHE_SIZE)) {
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ERROR(rt2x00dev, "CSR cache not available.\n");
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return -ENOMEM;
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}
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if (requesttype == USB_VENDOR_REQUEST_OUT)
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memcpy(rt2x00dev->csr.cache, buffer, buffer_length);
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status = rt2x00usb_vendor_request(rt2x00dev, request, requesttype,
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offset, 0, rt2x00dev->csr.cache,
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buffer_length, timeout);
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if (!status && requesttype == USB_VENDOR_REQUEST_IN)
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memcpy(buffer, rt2x00dev->csr.cache, buffer_length);
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return status;
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}
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EXPORT_SYMBOL_GPL(rt2x00usb_vendor_req_buff_lock);
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int rt2x00usb_vendor_request_buff(struct rt2x00_dev *rt2x00dev,
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const u8 request, const u8 requesttype,
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const u16 offset, void *buffer,
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const u16 buffer_length, const int timeout)
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{
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int status;
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mutex_lock(&rt2x00dev->usb_cache_mutex);
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status = rt2x00usb_vendor_req_buff_lock(rt2x00dev, request,
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requesttype, offset, buffer,
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buffer_length, timeout);
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mutex_unlock(&rt2x00dev->usb_cache_mutex);
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return status;
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}
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EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_buff);
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static void rt2x00usb_vendor_request_async_complete(struct urb *urb)
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{
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/*
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* We're done with it, descrease usage count and let the
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* usb layer delete it as soon as it is done with it.
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*/
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usb_put_urb(urb);
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}
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int rt2x00usb_vendor_request_async(struct rt2x00_dev *rt2x00dev,
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const u8 request, const u16 offset,
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const u16 value)
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{
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struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
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struct usb_ctrlrequest *ctrl;
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struct urb *urb;
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int status;
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urb = usb_alloc_urb(0, GFP_NOIO);
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if (!urb)
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return -ENOMEM;
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ctrl = kmalloc(sizeof(struct usb_ctrlrequest), GFP_NOIO);
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if (!ctrl) {
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status = -ENOMEM;
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goto exit;
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}
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ctrl->bRequestType= USB_VENDOR_REQUEST_OUT;
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ctrl->bRequest = request;
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ctrl->wValue = cpu_to_le16p(&value);
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ctrl->wIndex = cpu_to_le16p(&offset);
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ctrl->wLength = 0;
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usb_fill_control_urb(urb, usb_dev, usb_sndctrlpipe(usb_dev, 0),
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(unsigned char *)ctrl, NULL, 0,
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rt2x00usb_vendor_request_async_complete, NULL);
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status = usb_submit_urb(urb, GFP_ATOMIC);
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if (!status)
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goto exit;
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return 0;
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exit:
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usb_put_urb(urb);
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kfree(ctrl);
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return status;
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}
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EXPORT_SYMBOL_GPL(rt2x00usb_vendor_request_async);
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/*
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* TX data handlers.
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*/
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static void rt2x00usb_interrupt_txdone(struct urb *urb)
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{
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struct queue_entry *entry = (struct queue_entry *)urb->context;
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struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
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struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data;
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struct txdone_entry_desc txdesc;
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__le32 *txd = (__le32 *)entry->skb->data;
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u32 word;
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if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
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!__test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
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return;
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rt2x00_desc_read(txd, 0, &word);
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/*
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* Remove the descriptor data from the buffer.
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*/
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skb_pull(entry->skb, entry->queue->desc_size);
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/*
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* Obtain the status about this packet.
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*/
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txdesc.status = !urb->status ? TX_SUCCESS : TX_FAIL_RETRY;
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txdesc.retry = 0;
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txdesc.control = &priv_tx->control;
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rt2x00lib_txdone(entry, &txdesc);
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/*
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* Make this entry available for reuse.
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*/
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entry->flags = 0;
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rt2x00queue_index_inc(entry->queue, Q_INDEX_DONE);
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/*
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* If the data queue was full before the txdone handler
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* we must make sure the packet queue in the mac80211 stack
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* is reenabled when the txdone handler has finished.
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*/
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if (!rt2x00queue_full(entry->queue))
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ieee80211_wake_queue(rt2x00dev->hw, priv_tx->control.queue);
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}
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int rt2x00usb_write_tx_data(struct rt2x00_dev *rt2x00dev,
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struct data_queue *queue, struct sk_buff *skb,
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struct ieee80211_tx_control *control)
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{
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struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
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struct queue_entry *entry = rt2x00queue_get_entry(queue, Q_INDEX);
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struct queue_entry_priv_usb_tx *priv_tx = entry->priv_data;
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struct skb_frame_desc *skbdesc;
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u32 length;
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if (rt2x00queue_full(queue))
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return -EINVAL;
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if (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags)) {
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ERROR(rt2x00dev,
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"Arrived at non-free entry in the non-full queue %d.\n"
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"Please file bug report to %s.\n",
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control->queue, DRV_PROJECT);
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return -EINVAL;
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}
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/*
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* Add the descriptor in front of the skb.
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*/
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skb_push(skb, queue->desc_size);
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memset(skb->data, 0, queue->desc_size);
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/*
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* Fill in skb descriptor
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*/
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skbdesc = get_skb_frame_desc(skb);
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skbdesc->data = skb->data + queue->desc_size;
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skbdesc->data_len = skb->len - queue->desc_size;
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skbdesc->desc = skb->data;
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skbdesc->desc_len = queue->desc_size;
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skbdesc->entry = entry;
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rt2x00lib_write_tx_desc(rt2x00dev, skb, control);
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/*
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* USB devices cannot blindly pass the skb->len as the
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* length of the data to usb_fill_bulk_urb. Pass the skb
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* to the driver to determine what the length should be.
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*/
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length = rt2x00dev->ops->lib->get_tx_data_len(rt2x00dev, skb);
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/*
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* Initialize URB and send the frame to the device.
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*/
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__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
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usb_fill_bulk_urb(priv_tx->urb, usb_dev, usb_sndbulkpipe(usb_dev, 1),
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skb->data, length, rt2x00usb_interrupt_txdone, entry);
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usb_submit_urb(priv_tx->urb, GFP_ATOMIC);
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rt2x00queue_index_inc(queue, Q_INDEX);
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return 0;
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}
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EXPORT_SYMBOL_GPL(rt2x00usb_write_tx_data);
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/*
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* RX data handlers.
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*/
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static struct sk_buff* rt2x00usb_alloc_rxskb(struct data_queue *queue)
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{
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struct sk_buff *skb;
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unsigned int frame_size;
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/*
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* As alignment we use 2 and not NET_IP_ALIGN because we need
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* to be sure we have 2 bytes room in the head. (NET_IP_ALIGN
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* can be 0 on some hardware). We use these 2 bytes for frame
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* alignment later, we assume that the chance that
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* header_size % 4 == 2 is bigger then header_size % 2 == 0
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* and thus optimize alignment by reserving the 2 bytes in
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* advance.
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*/
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frame_size = queue->data_size + queue->desc_size;
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skb = dev_alloc_skb(frame_size + 2);
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if (!skb)
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return NULL;
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skb_reserve(skb, 2);
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skb_put(skb, frame_size);
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return skb;
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}
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static void rt2x00usb_interrupt_rxdone(struct urb *urb)
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{
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struct queue_entry *entry = (struct queue_entry *)urb->context;
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struct rt2x00_dev *rt2x00dev = entry->queue->rt2x00dev;
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struct sk_buff *skb;
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struct skb_frame_desc *skbdesc;
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struct rxdone_entry_desc rxdesc;
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if (!test_bit(DEVICE_ENABLED_RADIO, &rt2x00dev->flags) ||
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!test_and_clear_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags))
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return;
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/*
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* Check if the received data is simply too small
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* to be actually valid, or if the urb is signaling
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* a problem.
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*/
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if (urb->actual_length < entry->queue->desc_size || urb->status)
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goto skip_entry;
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/*
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* Fill in skb descriptor
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*/
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skbdesc = get_skb_frame_desc(entry->skb);
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memset(skbdesc, 0, sizeof(*skbdesc));
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skbdesc->entry = entry;
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memset(&rxdesc, 0, sizeof(rxdesc));
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rt2x00dev->ops->lib->fill_rxdone(entry, &rxdesc);
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/*
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* Allocate a new sk buffer to replace the current one.
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* If allocation fails, we should drop the current frame
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* so we can recycle the existing sk buffer for the new frame.
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*/
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skb = rt2x00usb_alloc_rxskb(entry->queue);
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if (!skb)
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goto skip_entry;
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/*
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* Send the frame to rt2x00lib for further processing.
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*/
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rt2x00lib_rxdone(entry, &rxdesc);
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/*
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* Replace current entry's skb with the newly allocated one,
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* and reinitialize the urb.
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*/
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entry->skb = skb;
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urb->transfer_buffer = entry->skb->data;
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urb->transfer_buffer_length = entry->skb->len;
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skip_entry:
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if (test_bit(DEVICE_ENABLED_RADIO, &entry->queue->rt2x00dev->flags)) {
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__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
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usb_submit_urb(urb, GFP_ATOMIC);
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}
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rt2x00queue_index_inc(entry->queue, Q_INDEX);
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}
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/*
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* Radio handlers
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*/
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void rt2x00usb_disable_radio(struct rt2x00_dev *rt2x00dev)
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{
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struct queue_entry_priv_usb_rx *priv_rx;
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struct queue_entry_priv_usb_tx *priv_tx;
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struct queue_entry_priv_usb_bcn *priv_bcn;
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struct data_queue *queue;
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unsigned int i;
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rt2x00usb_vendor_request_sw(rt2x00dev, USB_RX_CONTROL, 0x0000, 0x0000,
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REGISTER_TIMEOUT);
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/*
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* Cancel all queues.
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*/
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for (i = 0; i < rt2x00dev->rx->limit; i++) {
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priv_rx = rt2x00dev->rx->entries[i].priv_data;
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usb_kill_urb(priv_rx->urb);
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}
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tx_queue_for_each(rt2x00dev, queue) {
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for (i = 0; i < queue->limit; i++) {
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priv_tx = queue->entries[i].priv_data;
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usb_kill_urb(priv_tx->urb);
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}
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}
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for (i = 0; i < rt2x00dev->bcn->limit; i++) {
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priv_bcn = rt2x00dev->bcn->entries[i].priv_data;
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usb_kill_urb(priv_bcn->urb);
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if (priv_bcn->guardian_urb)
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usb_kill_urb(priv_bcn->guardian_urb);
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}
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if (!test_bit(DRIVER_REQUIRE_ATIM_QUEUE, &rt2x00dev->flags))
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return;
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for (i = 0; i < rt2x00dev->bcn[1].limit; i++) {
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priv_tx = rt2x00dev->bcn[1].entries[i].priv_data;
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usb_kill_urb(priv_tx->urb);
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}
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}
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EXPORT_SYMBOL_GPL(rt2x00usb_disable_radio);
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/*
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* Device initialization handlers.
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*/
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void rt2x00usb_init_rxentry(struct rt2x00_dev *rt2x00dev,
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struct queue_entry *entry)
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{
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struct usb_device *usb_dev = rt2x00dev_usb_dev(rt2x00dev);
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struct queue_entry_priv_usb_rx *priv_rx = entry->priv_data;
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usb_fill_bulk_urb(priv_rx->urb, usb_dev,
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usb_rcvbulkpipe(usb_dev, 1),
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entry->skb->data, entry->skb->len,
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rt2x00usb_interrupt_rxdone, entry);
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__set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
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usb_submit_urb(priv_rx->urb, GFP_ATOMIC);
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}
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EXPORT_SYMBOL_GPL(rt2x00usb_init_rxentry);
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void rt2x00usb_init_txentry(struct rt2x00_dev *rt2x00dev,
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struct queue_entry *entry)
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{
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entry->flags = 0;
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}
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EXPORT_SYMBOL_GPL(rt2x00usb_init_txentry);
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static int rt2x00usb_alloc_urb(struct rt2x00_dev *rt2x00dev,
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struct data_queue *queue)
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{
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struct queue_entry_priv_usb_rx *priv_rx;
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struct queue_entry_priv_usb_tx *priv_tx;
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struct queue_entry_priv_usb_bcn *priv_bcn;
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struct urb *urb;
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unsigned int guardian =
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test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
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unsigned int i;
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/*
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* Allocate the URB's
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*/
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for (i = 0; i < queue->limit; i++) {
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!urb)
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return -ENOMEM;
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if (queue->qid == QID_RX) {
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priv_rx = queue->entries[i].priv_data;
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priv_rx->urb = urb;
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} else if (queue->qid == QID_MGMT && guardian) {
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priv_bcn = queue->entries[i].priv_data;
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priv_bcn->urb = urb;
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urb = usb_alloc_urb(0, GFP_KERNEL);
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if (!urb)
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return -ENOMEM;
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priv_bcn->guardian_urb = urb;
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} else {
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priv_tx = queue->entries[i].priv_data;
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priv_tx->urb = urb;
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}
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}
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return 0;
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}
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static void rt2x00usb_free_urb(struct rt2x00_dev *rt2x00dev,
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struct data_queue *queue)
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{
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struct queue_entry_priv_usb_rx *priv_rx;
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struct queue_entry_priv_usb_tx *priv_tx;
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struct queue_entry_priv_usb_bcn *priv_bcn;
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struct urb *urb;
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unsigned int guardian =
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test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags);
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unsigned int i;
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|
|
if (!queue->entries)
|
|
return;
|
|
|
|
for (i = 0; i < queue->limit; i++) {
|
|
if (queue->qid == QID_RX) {
|
|
priv_rx = queue->entries[i].priv_data;
|
|
urb = priv_rx->urb;
|
|
} else if (queue->qid == QID_MGMT && guardian) {
|
|
priv_bcn = queue->entries[i].priv_data;
|
|
|
|
usb_kill_urb(priv_bcn->guardian_urb);
|
|
usb_free_urb(priv_bcn->guardian_urb);
|
|
|
|
urb = priv_bcn->urb;
|
|
} else {
|
|
priv_tx = queue->entries[i].priv_data;
|
|
urb = priv_tx->urb;
|
|
}
|
|
|
|
usb_kill_urb(urb);
|
|
usb_free_urb(urb);
|
|
if (queue->entries[i].skb)
|
|
kfree_skb(queue->entries[i].skb);
|
|
}
|
|
}
|
|
|
|
int rt2x00usb_initialize(struct rt2x00_dev *rt2x00dev)
|
|
{
|
|
struct data_queue *queue;
|
|
struct sk_buff *skb;
|
|
unsigned int entry_size;
|
|
unsigned int i;
|
|
int uninitialized_var(status);
|
|
|
|
/*
|
|
* Allocate DMA
|
|
*/
|
|
queue_for_each(rt2x00dev, queue) {
|
|
status = rt2x00usb_alloc_urb(rt2x00dev, queue);
|
|
if (status)
|
|
goto exit;
|
|
}
|
|
|
|
/*
|
|
* For the RX queue, skb's should be allocated.
|
|
*/
|
|
entry_size = rt2x00dev->rx->data_size + rt2x00dev->rx->desc_size;
|
|
for (i = 0; i < rt2x00dev->rx->limit; i++) {
|
|
skb = rt2x00usb_alloc_rxskb(rt2x00dev->rx);
|
|
if (!skb)
|
|
goto exit;
|
|
|
|
rt2x00dev->rx->entries[i].skb = skb;
|
|
}
|
|
|
|
return 0;
|
|
|
|
exit:
|
|
rt2x00usb_uninitialize(rt2x00dev);
|
|
|
|
return status;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_initialize);
|
|
|
|
void rt2x00usb_uninitialize(struct rt2x00_dev *rt2x00dev)
|
|
{
|
|
struct data_queue *queue;
|
|
|
|
queue_for_each(rt2x00dev, queue)
|
|
rt2x00usb_free_urb(rt2x00dev, queue);
|
|
}
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_uninitialize);
|
|
|
|
/*
|
|
* USB driver handlers.
|
|
*/
|
|
static void rt2x00usb_free_reg(struct rt2x00_dev *rt2x00dev)
|
|
{
|
|
kfree(rt2x00dev->rf);
|
|
rt2x00dev->rf = NULL;
|
|
|
|
kfree(rt2x00dev->eeprom);
|
|
rt2x00dev->eeprom = NULL;
|
|
|
|
kfree(rt2x00dev->csr.cache);
|
|
rt2x00dev->csr.cache = NULL;
|
|
}
|
|
|
|
static int rt2x00usb_alloc_reg(struct rt2x00_dev *rt2x00dev)
|
|
{
|
|
rt2x00dev->csr.cache = kzalloc(CSR_CACHE_SIZE, GFP_KERNEL);
|
|
if (!rt2x00dev->csr.cache)
|
|
goto exit;
|
|
|
|
rt2x00dev->eeprom = kzalloc(rt2x00dev->ops->eeprom_size, GFP_KERNEL);
|
|
if (!rt2x00dev->eeprom)
|
|
goto exit;
|
|
|
|
rt2x00dev->rf = kzalloc(rt2x00dev->ops->rf_size, GFP_KERNEL);
|
|
if (!rt2x00dev->rf)
|
|
goto exit;
|
|
|
|
return 0;
|
|
|
|
exit:
|
|
ERROR_PROBE("Failed to allocate registers.\n");
|
|
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
|
|
return -ENOMEM;
|
|
}
|
|
|
|
int rt2x00usb_probe(struct usb_interface *usb_intf,
|
|
const struct usb_device_id *id)
|
|
{
|
|
struct usb_device *usb_dev = interface_to_usbdev(usb_intf);
|
|
struct rt2x00_ops *ops = (struct rt2x00_ops *)id->driver_info;
|
|
struct ieee80211_hw *hw;
|
|
struct rt2x00_dev *rt2x00dev;
|
|
int retval;
|
|
|
|
usb_dev = usb_get_dev(usb_dev);
|
|
|
|
hw = ieee80211_alloc_hw(sizeof(struct rt2x00_dev), ops->hw);
|
|
if (!hw) {
|
|
ERROR_PROBE("Failed to allocate hardware.\n");
|
|
retval = -ENOMEM;
|
|
goto exit_put_device;
|
|
}
|
|
|
|
usb_set_intfdata(usb_intf, hw);
|
|
|
|
rt2x00dev = hw->priv;
|
|
rt2x00dev->dev = usb_intf;
|
|
rt2x00dev->ops = ops;
|
|
rt2x00dev->hw = hw;
|
|
mutex_init(&rt2x00dev->usb_cache_mutex);
|
|
|
|
rt2x00dev->usb_maxpacket =
|
|
usb_maxpacket(usb_dev, usb_sndbulkpipe(usb_dev, 1), 1);
|
|
if (!rt2x00dev->usb_maxpacket)
|
|
rt2x00dev->usb_maxpacket = 1;
|
|
|
|
retval = rt2x00usb_alloc_reg(rt2x00dev);
|
|
if (retval)
|
|
goto exit_free_device;
|
|
|
|
retval = rt2x00lib_probe_dev(rt2x00dev);
|
|
if (retval)
|
|
goto exit_free_reg;
|
|
|
|
return 0;
|
|
|
|
exit_free_reg:
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
|
|
exit_free_device:
|
|
ieee80211_free_hw(hw);
|
|
|
|
exit_put_device:
|
|
usb_put_dev(usb_dev);
|
|
|
|
usb_set_intfdata(usb_intf, NULL);
|
|
|
|
return retval;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_probe);
|
|
|
|
void rt2x00usb_disconnect(struct usb_interface *usb_intf)
|
|
{
|
|
struct ieee80211_hw *hw = usb_get_intfdata(usb_intf);
|
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
|
|
|
/*
|
|
* Free all allocated data.
|
|
*/
|
|
rt2x00lib_remove_dev(rt2x00dev);
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
ieee80211_free_hw(hw);
|
|
|
|
/*
|
|
* Free the USB device data.
|
|
*/
|
|
usb_set_intfdata(usb_intf, NULL);
|
|
usb_put_dev(interface_to_usbdev(usb_intf));
|
|
}
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_disconnect);
|
|
|
|
#ifdef CONFIG_PM
|
|
int rt2x00usb_suspend(struct usb_interface *usb_intf, pm_message_t state)
|
|
{
|
|
struct ieee80211_hw *hw = usb_get_intfdata(usb_intf);
|
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
|
int retval;
|
|
|
|
retval = rt2x00lib_suspend(rt2x00dev, state);
|
|
if (retval)
|
|
return retval;
|
|
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
|
|
/*
|
|
* Decrease usbdev refcount.
|
|
*/
|
|
usb_put_dev(interface_to_usbdev(usb_intf));
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_suspend);
|
|
|
|
int rt2x00usb_resume(struct usb_interface *usb_intf)
|
|
{
|
|
struct ieee80211_hw *hw = usb_get_intfdata(usb_intf);
|
|
struct rt2x00_dev *rt2x00dev = hw->priv;
|
|
int retval;
|
|
|
|
usb_get_dev(interface_to_usbdev(usb_intf));
|
|
|
|
retval = rt2x00usb_alloc_reg(rt2x00dev);
|
|
if (retval)
|
|
return retval;
|
|
|
|
retval = rt2x00lib_resume(rt2x00dev);
|
|
if (retval)
|
|
goto exit_free_reg;
|
|
|
|
return 0;
|
|
|
|
exit_free_reg:
|
|
rt2x00usb_free_reg(rt2x00dev);
|
|
|
|
return retval;
|
|
}
|
|
EXPORT_SYMBOL_GPL(rt2x00usb_resume);
|
|
#endif /* CONFIG_PM */
|
|
|
|
/*
|
|
* rt2x00usb module information.
|
|
*/
|
|
MODULE_AUTHOR(DRV_PROJECT);
|
|
MODULE_VERSION(DRV_VERSION);
|
|
MODULE_DESCRIPTION("rt2x00 usb library");
|
|
MODULE_LICENSE("GPL");
|