diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00.h b/drivers/net/wireless/ralink/rt2x00/rt2x00.h index 6418620f95ff..3dacede7da5e 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h @@ -38,6 +38,7 @@ #include #include #include +#include #include @@ -1002,6 +1003,8 @@ struct rt2x00_dev { /* Extra TX headroom required for alignment purposes. */ unsigned int extra_tx_headroom; + + struct usb_anchor *anchor; }; struct rt2x00_bar_list_entry { diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c index 5639ed816813..b2f7c586045d 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c @@ -1422,11 +1422,14 @@ void rt2x00lib_remove_dev(struct rt2x00_dev *rt2x00dev) cancel_work_sync(&rt2x00dev->intf_work); cancel_delayed_work_sync(&rt2x00dev->autowakeup_work); cancel_work_sync(&rt2x00dev->sleep_work); +#ifdef CONFIG_RT2X00_LIB_USB if (rt2x00_is_usb(rt2x00dev)) { + usb_kill_anchored_urbs(rt2x00dev->anchor); hrtimer_cancel(&rt2x00dev->txstatus_timer); cancel_work_sync(&rt2x00dev->rxdone_work); cancel_work_sync(&rt2x00dev->txdone_work); } +#endif if (rt2x00dev->workqueue) destroy_workqueue(rt2x00dev->workqueue); diff --git a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c index 7627af6098eb..7cf26c6124d1 100644 --- a/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c +++ b/drivers/net/wireless/ralink/rt2x00/rt2x00usb.c @@ -171,8 +171,11 @@ static void rt2x00usb_register_read_async_cb(struct urb *urb) { struct rt2x00_async_read_data *rd = urb->context; if (rd->callback(rd->rt2x00dev, urb->status, le32_to_cpu(rd->reg))) { - if (usb_submit_urb(urb, GFP_ATOMIC) < 0) + usb_anchor_urb(urb, rd->rt2x00dev->anchor); + if (usb_submit_urb(urb, GFP_ATOMIC) < 0) { + usb_unanchor_urb(urb); kfree(rd); + } } else kfree(rd); } @@ -206,8 +209,11 @@ void rt2x00usb_register_read_async(struct rt2x00_dev *rt2x00dev, usb_fill_control_urb(urb, usb_dev, usb_rcvctrlpipe(usb_dev, 0), (unsigned char *)(&rd->cr), &rd->reg, sizeof(rd->reg), rt2x00usb_register_read_async_cb, rd); - if (usb_submit_urb(urb, GFP_ATOMIC) < 0) + usb_anchor_urb(urb, rt2x00dev->anchor); + if (usb_submit_urb(urb, GFP_ATOMIC) < 0) { + usb_unanchor_urb(urb); kfree(rd); + } usb_free_urb(urb); } EXPORT_SYMBOL_GPL(rt2x00usb_register_read_async); @@ -313,8 +319,10 @@ static bool rt2x00usb_kick_tx_entry(struct queue_entry *entry, void *data) entry->skb->data, length, rt2x00usb_interrupt_txdone, entry); + usb_anchor_urb(entry_priv->urb, rt2x00dev->anchor); status = usb_submit_urb(entry_priv->urb, GFP_ATOMIC); if (status) { + usb_unanchor_urb(entry_priv->urb); if (status == -ENODEV) clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); @@ -402,8 +410,10 @@ static bool rt2x00usb_kick_rx_entry(struct queue_entry *entry, void *data) entry->skb->data, entry->skb->len, rt2x00usb_interrupt_rxdone, entry); + usb_anchor_urb(entry_priv->urb, rt2x00dev->anchor); status = usb_submit_urb(entry_priv->urb, GFP_ATOMIC); if (status) { + usb_unanchor_urb(entry_priv->urb); if (status == -ENODEV) clear_bit(DEVICE_STATE_PRESENT, &rt2x00dev->flags); set_bit(ENTRY_DATA_IO_FAILED, &entry->flags); @@ -818,6 +828,13 @@ int rt2x00usb_probe(struct usb_interface *usb_intf, if (retval) goto exit_free_reg; + rt2x00dev->anchor = devm_kmalloc(&usb_dev->dev, + sizeof(struct usb_anchor), + GFP_KERNEL); + if (!rt2x00dev->anchor) + goto exit_free_reg; + + init_usb_anchor(rt2x00dev->anchor); return 0; exit_free_reg: