rt2x00: Limit rt2x00pci rxdone processing to 16 entries at once

Instead of receiving an unlimited number of frames, stop after 16
entries and reschedule the rxdone tasklet. This allows other tasklets
to be run inbetween.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
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/rt2x00pci.c b/drivers/net/wireless/rt2x00/rt2x00pci.c
index 4dd82b0..9649bd0 100644
--- a/drivers/net/wireless/rt2x00/rt2x00pci.c
+++ b/drivers/net/wireless/rt2x00/rt2x00pci.c
@@ -60,14 +60,15 @@
 }
 EXPORT_SYMBOL_GPL(rt2x00pci_regbusy_read);
 
-void rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev)
+bool rt2x00pci_rxdone(struct rt2x00_dev *rt2x00dev)
 {
 	struct data_queue *queue = rt2x00dev->rx;
 	struct queue_entry *entry;
 	struct queue_entry_priv_pci *entry_priv;
 	struct skb_frame_desc *skbdesc;
+	int max_rx = 16;
 
-	while (1) {
+	while (--max_rx) {
 		entry = rt2x00queue_get_entry(queue, Q_INDEX);
 		entry_priv = entry->priv_data;
 
@@ -93,6 +94,8 @@
 		 */
 		rt2x00lib_rxdone(entry);
 	}
+
+	return !max_rx;
 }
 EXPORT_SYMBOL_GPL(rt2x00pci_rxdone);