[FS#770] DMA fails to stop

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - antithesis0 (antithesis0) 

Attached to Project - LEDE Project
Summary - DMA fails to stop
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on
 - Software versions of LEDE release, packages, etc.
 - Steps to reproduce
   

I'm getting this error in dmesg, appears sporadically and not often but repeatedly.

"
[512961.518290] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02100020 DMADBG_7=0x00006800
[544382.958131] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02100020 DMADBG_7=0x00026e00
"

Tried to google and I see old reports, but none in LEDE, my first bug report here so hopefully this is the right way to report, if not, I'll learn.

Thanks!

Model	TP-Link TL-WDR4300 v1
Firmware version: LEDE Reboot 17.01.1 r3316-7eb58cf109 / LuCI lede-17.01 branch (git-17.100.70571-29fabe2)
Kernel Version	4.4.61




More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=770