netdev - Re: [PATCH] net: ethernet: sun4i-emac: free dma descriptor

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Message-ID: <20250909181547.0782840f@kernel.org>
Date: Tue, 9 Sep 2025 18:15:47 -0700
From: Jakub Kicinski <kuba@...nel.org>
To: 李克斯 <conleylee@...mail.com>
Cc: vkoul@...nel.org, davem@...emloft.net, wens@...e.org,
 mripard@...nel.org, netdev@...r.kernel.org, dmaengine@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] net: ethernet: sun4i-emac: free dma descriptor

On Tue, 9 Sep 2025 14:36:42 +0800 李克斯 wrote:
> Thank you for the suggestion. I've reviewed the documentation, and
> setting the reuse flag while reusing descriptors might be a good
> optimization. I'll make the changes and run some tests. If everything
> works well, I'll submit a new patch.

To be clear if you're saying the driver is buggy and can crash right
now we need to fix it first and then optimize it later, as separate
commits. So that LTS kernels can backport the fix.

The questions I'm asking are because I don't understand whether the
upstream kernel is buggy and how exactly..