[FS#13] Ath9k AP stays up for connected clients but doesn't show in scan on new ones - Comment added

[LEDE Bugs]

The following task has a new comment added:

FS#13 - Ath9k AP stays up for connected clients but doesn't show in scan on new ones
User who did this - Bluse-Blue (Bluse)

----------
Hi all,

I was able to find a way to reproduce the issue with "not interrupt increase" for ath9k and hence AP stops from operation.

steps to reproduce:

  * for better observability just establish two ssh session to your router, side-by-side 

  * in window A watch the interrupt counter for ath9k by while true; do cat /proc/interrupts ; sleep 1; done


  * in window B issue wifi severale times. After 2-4 "wifi" triggers, I am able to stop the interrupt counter and the overall wifi and after another 2-4 "wifi" triggers the interrupt counter increases its count again and wifi is back.

dmesg output:
to get some debug output from ath9k, I used echo "0x00000793" > /sys/kernel/debug/ieee80211/phy0/ath9k/debug, which shows:
[[http://pastebin.com/38EMU31e|dmesg output with ath9k debug]]

Can someone test this steps and report if the same is observeable ?

Bye Bluse

----------

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=13#comment79