From: Jacob Procee <sn125164@gmail.com>
To: "Martin Povišer" <povik+lin@cutebit.org>
Cc: Vinod Koul <vkoul@kernel.org>, Frank Li <Frank.Li@kernel.org>,
Sven Peter <sven@kernel.org>, Janne Grunau <j@jannau.net>,
Neal Gompa <neal@gompa.dev>,
asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dmaengine: apple-admac: Fix position one period ahead at period boundary
Date: Fri, 30 Oct 2026 08:35:34 +0100 [thread overview]
Message-ID: <80246e46-8b9b-4cc8-b3a0-b07f9e5aaf8f@gmail.com> (raw)
In-Reply-To: <E5478149-FA00-4A41-8CAC-7E8CF8578473@cutebit.org>
On 10/29/26 17:10, Martin Povišer wrote:
> Rewriting admac_cyclic_read_residue to avoid the race altogether would be
> best but until then, your change looks to be a strict improvement.
Hi Martin,
Thanks for the ack and the extra background info. I would love to take a
look at a race-free version of admac_cyclic_read_residue() as a separate
follow-up patch; v2 of this fix follows shortly. A complete test setup
is ready on my machine that traces every position read and logs the raw
registers. If you have any pointers on how REG_DESC_RING behaves, or
already have a direction in mind, that would help.
Best regards,
Jacob
prev parent reply other threads:[~2026-10-30 7:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-29 10:59 [PATCH] dmaengine: apple-admac: Fix position one period ahead at period boundary Jacob Procee
2026-10-29 15:02 ` Frank Li
2026-10-29 15:15 ` Sasha Finkelstein
2026-10-29 16:10 ` Martin Povišer
2026-10-30 7:35 ` Jacob Procee [this message]
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