[OpenWrt-Devel] cns3xxx: DMA failed to stop in 10ms immediately following 4.4 kernel bump

[Pushpal Sidhu]

Immediately following the 4.4 kernel bump for cns3xxx (9db4b26), I
started getting "ath: phy0: DMA failed to stop in 10 ms
AR_CR=0x00000024 AR_DIAG_SW=0x42100020 DMADBG_7=0x000062c0" with many
different mini-PCI cards, but not with mini-PCIe cards.

I noticed some DMA work, but mainly on the Ethernet driver. Was
something potentially introduced when bumping from 3.18 to 4.4? What
can we do to fix this?

- Pushpal
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