Commit 2e7798b7 authored by Helmut Schaa's avatar Helmut Schaa Committed by John W. Linville
Browse files

rt2x00: Limit rt2800pci txdone processing to 16 entries at once



Instead of reporting an unlimited number of tx status reports to
mac80211 stop after 16 frames and reschedule the tx status tasklet.
This allows other tasklets to be run inbetween.
Signed-off-by: default avatarHelmut Schaa <helmut.schaa@googlemail.com>
Acked-by: default avatarGertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: default avatarIvo van Doorn <IvDoorn@gmail.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 16638937
......@@ -717,12 +717,13 @@ static void rt2800pci_wakeup(struct rt2x00_dev *rt2x00dev)
rt2800_config(rt2x00dev, &libconf, IEEE80211_CONF_CHANGE_PS);
}
static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
static bool rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
{
struct data_queue *queue;
struct queue_entry *entry;
u32 status;
u8 qid;
int max_tx_done = 16;
while (kfifo_get(&rt2x00dev->txstatus_fifo, &status)) {
qid = rt2x00_get_field32(status, TX_STA_FIFO_PID_QUEUE);
......@@ -759,7 +760,12 @@ static void rt2800pci_txdone(struct rt2x00_dev *rt2x00dev)
entry = rt2x00queue_get_entry(queue, Q_INDEX_DONE);
rt2800_txdone_entry(entry, status);
if (--max_tx_done == 0)
break;
}
return !max_tx_done;
}
static void rt2800pci_enable_interrupt(struct rt2x00_dev *rt2x00dev,
......@@ -780,7 +786,9 @@ static void rt2800pci_enable_interrupt(struct rt2x00_dev *rt2x00dev,
static void rt2800pci_txstatus_tasklet(unsigned long data)
{
rt2800pci_txdone((struct rt2x00_dev *)data);
struct rt2x00_dev *rt2x00dev = (struct rt2x00_dev *)data;
if (rt2800pci_txdone(rt2x00dev))
tasklet_schedule(&rt2x00dev->txstatus_tasklet);
/*
* No need to enable the tx status interrupt here as we always
......
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