diff options
Diffstat (limited to 'rt2800usb-slow-down-TX-status-polling.patch')
| -rw-r--r-- | rt2800usb-slow-down-TX-status-polling.patch | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/rt2800usb-slow-down-TX-status-polling.patch b/rt2800usb-slow-down-TX-status-polling.patch deleted file mode 100644 index a76f9b847..000000000 --- a/rt2800usb-slow-down-TX-status-polling.patch +++ /dev/null @@ -1,53 +0,0 @@ -Polling TX statuses too frequently has two negative effects. First is -randomly peek CPU usage, causing overall system functioning delays. -Second bad effect is that device is not able to fill TX statuses in -H/W register on some workloads and we get lot of timeouts like below: - -ieee80211 phy4: rt2800usb_entry_txstatus_timeout: Warning - TX status timeout for entry 7 in queue 2 -ieee80211 phy4: rt2800usb_entry_txstatus_timeout: Warning - TX status timeout for entry 7 in queue 2 -ieee80211 phy4: rt2800usb_txdone: Warning - Got TX status for an empty queue 2, dropping - -This not only cause flood of messages in dmesg, but also bad throughput, -since rate scaling algorithm can not work optimally. - -In the future, we should probably make polling interval be adjusted -automatically, but for now just increase values, this make mentioned -problems gone. - -Resolve: -https://bugzilla.kernel.org/show_bug.cgi?id=62781 - -Cc: stable@vger.kernel.org -Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> ---- - drivers/net/wireless/rt2x00/rt2800usb.c | 8 ++++---- - 1 file changed, 4 insertions(+), 4 deletions(-) - -diff --git a/drivers/net/wireless/rt2x00/rt2800usb.c b/drivers/net/wireless/rt2x00/rt2800usb.c -index 96677ce5..e095e61 100644 ---- a/drivers/net/wireless/rt2x00/rt2800usb.c -+++ b/drivers/net/wireless/rt2x00/rt2800usb.c -@@ -176,8 +176,8 @@ static bool rt2800usb_tx_sta_fifo_read_completed(struct rt2x00_dev *rt2x00dev, - queue_work(rt2x00dev->workqueue, &rt2x00dev->txdone_work); - - if (rt2800usb_txstatus_pending(rt2x00dev)) { -- /* Read register after 250 us */ -- hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 250000), -+ /* Read register after 1 ms */ -+ hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 1000000), - HRTIMER_MODE_REL); - return false; - } -@@ -202,8 +202,8 @@ static void rt2800usb_async_read_tx_status(struct rt2x00_dev *rt2x00dev) - if (test_and_set_bit(TX_STATUS_READING, &rt2x00dev->flags)) - return; - -- /* Read TX_STA_FIFO register after 500 us */ -- hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 500000), -+ /* Read TX_STA_FIFO register after 2 ms */ -+ hrtimer_start(&rt2x00dev->txstatus_timer, ktime_set(0, 2000000), - HRTIMER_MODE_REL); - } - --- -1.8.3.1 |