OPENWRT Master's development version number trunk mt7620n Wireless driver bug

surrounding environment:

OPENWRT Development Trunk:

SVN Co svn://svn.openwrt.org/openwrt/trunk/

BUG:

1. The wireless connection cannot be established.

2. Wireless connection Setup failed to get IP address, disconnect.

In the event of a malfunction, the following DMESG will accompany

[3702.380000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[3702.390000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[3702.400000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[3702.410000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[3702.420000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[97845.440000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[97845.450000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[97845.460000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[97845.470000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[97845.480000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[101808.120000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[101808.130000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[101808.140000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[101808.150000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[101808.160000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[102318.680000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[102318.690000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[102318.700000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[102318.710000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2
[102318.720000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-dropping frame due to full TX queue 2

When using WiFi restart, the following debug message appears. Still not normal internet, this time just have to restart the router talent enough to solve the problem.

[106572.440000] Br-lan2:port 2 (wlan0-1) entered disabled state
[106572.450000] Device wlan0-1 left promiscuous mode
[106572.450000] Br-lan2:port 2 (wlan0-1) entered disabled state
[106572.490000] Device Wlan0 left promiscuous mode
[106572.490000] Br-lan:port 2 (wlan0) entered disabled state
[106572.720000] ieee80211 Phy0:rt2x00queue_flush_queue:warning-queue 2 failed to flush
[106572.930000] ieee80211 Phy0:rt2x00queue_flush_queue:warning-queue 2 failed to flush
[106573.440000] Ipv6:addrconf (NETDEV_UP): Wlan0:link is isn't ready
[106573.440000] Device Wlan0 entered promiscuous mode
[106573.450000] Br-lan:port 2 (WLAN0) entered forwarding state
[106573.460000] Br-lan:port 2 (WLAN0) entered forwarding state
[106573.470000] Br-lan:port 2 (wlan0) entered disabled state
[106580.750000] Br-lan:port 2 (WLAN0) entered forwarding state
[106580.750000] Br-lan:port 2 (WLAN0) entered forwarding state
[106580.760000] Ipv6:addrconf (netdev_change): Wlan0:link becomes ready
[106580.780000] Device Wlan0-1 entered promiscuous mode
[106580.790000] Br-lan2:port 2 (WLAN0-1) entered forwarding state
[106580.790000] Br-lan2:port 2 (WLAN0-1) entered forwarding state
[106580.800000] Ipv6:addrconf (netdev_up): wlan0-1: Link is isn't ready
[106581.040000] Ipv6:addrconf (netdev_change): wlan0-1: Link becomes ready
[106582.750000] Br-lan:port 2 (WLAN0) entered forwarding state
[106582.790000] Br-lan2:port 2 (WLAN0-1) entered forwarding state
[106591.120000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-arrived at Non-free entry in the Non-full queue 2
[106591.120000] Please file bug report to http://rt2x00.serialmonkey.com
[106591.220000] Br-lan2:port 2 (wlan0-1) entered disabled state
[106591.220000] Device wlan0-1 left promiscuous mode
[106591.230000] Br-lan2:port 2 (wlan0-1) entered disabled state
[106591.280000] Device Wlan0 left promiscuous mode
[106591.280000] Br-lan:port 2 (wlan0) entered disabled state
[106591.750000] Ipv6:addrconf (NETDEV_UP): Wlan0:link is isn't ready
[106591.750000] Device Wlan0 entered promiscuous mode
[106591.760000] Br-lan:port 2 (WLAN0) entered forwarding state
[106591.770000] Br-lan:port 2 (WLAN0) entered forwarding state
[106592.260000] Br-lan:port 2 (wlan0) entered disabled state
[106599.060000] Br-lan:port 2 (WLAN0) entered forwarding state
[106599.060000] Br-lan:port 2 (WLAN0) entered forwarding state
[106599.070000] Ipv6:addrconf (netdev_change): Wlan0:link becomes ready
[106599.090000] Device Wlan0-1 entered promiscuous mode
[106599.100000] Br-lan2:port 2 (WLAN0-1) entered forwarding state
[106599.100000] Br-lan2:port 2 (WLAN0-1) entered forwarding state
[106599.110000] Ipv6:addrconf (netdev_up): wlan0-1: Link is isn't ready
[106599.340000] Ipv6:addrconf (netdev_change): wlan0-1: Link becomes ready
[106601.060000] Br-lan:port 2 (WLAN0) entered forwarding state
[106601.100000] Br-lan2:port 2 (WLAN0-1) entered forwarding state
[106655.040000] ieee80211 phy0:rt2x00queue_write_tx_frame:error-arrived at Non-free entry in the Non-full queue 2
[106655.040000] Please file bug report to http://rt2x00.serialmonkey.com

Personal analysis:

The issue of drop frame is not really a big problem. But the connection is not wireless, this joke will open up.

There are quite a few people who have similar problems. People who can fix this problem really don't have a detailed answer.

https://dev.openwrt.org/ticket/14138

Here's the bottom. Is PCI, mine is SOC so not my dish ah, too pity, the only one to solve the problem is actually in the PCI side of the hands and feet.

http://www.marc.info/?l=linux-wireless&m=137992749815360&w=2

Linux Kernel Patch

Https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/drivers/net/wireless/rt2x00/rt2x00pci.c ?

Id=9483f40d8d01918b399b4e24d0c1111db0afffeb

Help Parties:

Http://rt2x00.serialmonkey.com/phpBB/viewforum.php?f=5

Http://www.right.com.cn/forum/thread-146943-1-1.html

https://dev.openwrt.org/ticket/17556

So far there is no solution, the need to carefully learn wireless.kernel.org drive.

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OPENWRT Master's development version number trunk mt7620n Wireless driver bug