1 /* 2 * Copyright (c) 2014 Redpine Signals Inc. 3 * 4 * Permission to use, copy, modify, and/or distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 * 16 */ 17 18 #include <linux/firmware.h> 19 #include "rsi_usb.h" 20 21 /** 22 * rsi_usb_rx_thread() - This is a kernel thread to receive the packets from 23 * the USB device. 24 * @common: Pointer to the driver private structure. 25 * 26 * Return: None. 27 */ 28 void rsi_usb_rx_thread(struct rsi_common *common) 29 { 30 struct rsi_hw *adapter = common->priv; 31 struct rsi_91x_usbdev *dev = adapter->rsi_dev; 32 int status; 33 struct sk_buff *skb; 34 35 do { 36 rsi_wait_event(&dev->rx_thread.event, EVENT_WAIT_FOREVER); 37 rsi_reset_event(&dev->rx_thread.event); 38 39 while (true) { 40 if (atomic_read(&dev->rx_thread.thread_done)) 41 goto out; 42 43 skb = skb_dequeue(&dev->rx_q); 44 if (!skb) 45 break; 46 status = rsi_read_pkt(common, skb->data, 0); 47 if (status) { 48 rsi_dbg(ERR_ZONE, "%s: Failed To read data", 49 __func__); 50 break; 51 } 52 dev_kfree_skb(skb); 53 } 54 } while (1); 55 56 out: 57 rsi_dbg(INFO_ZONE, "%s: Terminated thread\n", __func__); 58 skb_queue_purge(&dev->rx_q); 59 kthread_complete_and_exit(&dev->rx_thread.completion, 0); 60 } 61 62