rt2x00: Fix URB error handling
kill_urb guarentees that when the function returns, the URB has
been fully killed. This means we don't need the extra sleeping
after the call to kill_urb.
kill_urb can however also guarentee the submit_urb to fail, as
a result, we must catch the return value from submit_urb an
correctly mark the entry as owned by the driver, and the
status as broken.
Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/rt2x00/rt2x00usb.c b/drivers/net/wireless/rt2x00/rt2x00usb.c
index 89d77f5..b3317df 100644
--- a/drivers/net/wireless/rt2x00/rt2x00usb.c
+++ b/drivers/net/wireless/rt2x00/rt2x00usb.c
@@ -253,7 +253,10 @@
entry->skb->data, length,
rt2x00usb_interrupt_txdone, entry);
- usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
+ if (usb_submit_urb(entry_priv->urb, GFP_ATOMIC)) {
+ set_bit(ENTRY_DATA_IO_FAILED, &entry->flags);
+ rt2x00lib_dmadone(entry);
+ }
}
void rt2x00usb_kick_tx_queue(struct data_queue *queue)
@@ -280,14 +283,6 @@
if ((entry->queue->qid == QID_BEACON) &&
(test_bit(DRIVER_REQUIRE_BEACON_GUARD, &rt2x00dev->flags)))
usb_kill_urb(bcn_priv->guardian_urb);
-
- /*
- * We need a short delay here to wait for
- * the URB to be canceled
- */
- do {
- udelay(100);
- } while (test_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags));
}
void rt2x00usb_kill_tx_queue(struct data_queue *queue)
@@ -469,7 +464,10 @@
rt2x00usb_interrupt_rxdone, entry);
set_bit(ENTRY_OWNER_DEVICE_DATA, &entry->flags);
- usb_submit_urb(entry_priv->urb, GFP_ATOMIC);
+ if (usb_submit_urb(entry_priv->urb, GFP_ATOMIC)) {
+ set_bit(ENTRY_DATA_IO_FAILED, &entry->flags);
+ rt2x00lib_dmadone(entry);
+ }
}
}
EXPORT_SYMBOL_GPL(rt2x00usb_clear_entry);