From: Peter Oh <peter.oh@eero.com>
To: Zhi Chen <zhichen@codeaurora.org>, ath10k@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Subject: Re: [PATCH RFC] Revert "ath10k: fix DMA related firmware crashes on multiple devices"
Date: Tue, 22 Oct 2019 10:16:53 -0700 [thread overview]
Message-ID: <d6cfd945-7bab-a01d-0157-e0e1802f66e3@eero.com> (raw)
In-Reply-To: <1571734629-18028-1-git-send-email-zhichen@codeaurora.org>
On 10/22/19 1:57 AM, Zhi Chen wrote:
> 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.
How can you say value 0 (I believe it's 64 bytes) DMA burst size causes
the symptom and 1 fixes it?
Peter
next prev parent reply other threads:[~2019-10-22 17:17 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-22 8:57 [PATCH RFC] Revert "ath10k: fix DMA related firmware crashes on multiple devices" Zhi Chen
2019-10-22 10:07 ` Tom Psyborg
2019-10-30 2:44 ` zhichen
2019-11-06 10:01 ` Tom Psyborg
2019-11-07 5:35 ` zhichen
2019-10-22 17:16 ` Peter Oh [this message]
2019-10-22 18:24 ` Adrian Chadd
2019-10-30 6:04 ` Peter Oh
2019-10-30 6:28 ` zhichen
2019-10-30 6:16 ` zhichen
2019-10-30 23:01 ` Peter Oh
2019-11-03 15:36 ` Tom Psyborg
2019-11-04 18:41 ` Peter Oh
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