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Re: [PATCH RFC, v2] Revert "ath10k: fix DMA related firmware crashes on multiple devices"

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Zhi Chen <zhichen@xxxxxxxxxxxxxx> writes:

> This reverts commit 76d164f582150fd0259ec0fcbc485470bcd8033e.
> PCIe hung issue was observed on multiple platforms. The issue was reproduced
> when DUT was configured as AP and associated with 50+ STAs.
>
> With PCIe protocol analyzer, we can see DMA Read crossing 4KB boundary when
> issue happened. It broke PCIe spec and caused PCIe stuck.
>
> Tested:  IPQ8064 + QCA9984 with firmware 10.4-3.10-00047
>          QCS404 + QCA9984 with firmware 10.4-3.9.0.2--00044
>          Synaptics AS370 + QCA9888  with firmware 10.4-3.9.0.2--00040
>
> Signed-off-by: Zhi Chen <zhichen@xxxxxxxxxxxxxx>
> ---

All comments under --- line is not added to the git repository.

> v2: revert 10.4 only because old chips have different AXI RD/WR CFG

So you should also mention this in the commit log so it gets properly
archived.

And in the next version please remove RFC, as it seems we are reaching a
consensus that is the right approach. Or are there any comments?

-- 
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches



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