netdev - Re: [PATCH 1/2] net: stmmac: don't set own bit too early for jumbo frames

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Message-Id: <20190315.113918.418776680846022851.davem@davemloft.net>
Date:   Fri, 15 Mar 2019 11:39:18 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     aaro.koskinen@....fi
Cc:     peppe.cavallaro@...com, alexandre.torgue@...com,
        joabreu@...opsys.com, thor.thayer@...ux.intel.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        aaro.koskinen@...ia.com
Subject: Re: [PATCH 1/2] net: stmmac: don't set own bit too early for jumbo
 frames

From: Aaro Koskinen <aaro.koskinen@....fi>
Date: Thu, 14 Mar 2019 21:43:19 +0200

> From: Aaro Koskinen <aaro.koskinen@...ia.com>
> 
> Commit 0e80bdc9a72d ("stmmac: first frame prep at the end of xmit
> routine") overlooked jumbo frames when re-ordering the code, and as a
> result the own bit was not getting set anymore for the first jumbo frame
> descriptor. Commit 487e2e22ab79 ("net: stmmac: Set OWN bit for jumbo
> frames") tried to fix this, but now the bit is getting set too early and
> the DMA may start while we are still setting up the remaing descriptors.
> And with the chain mode the own bit remains still unset.
> 
> Fix by setting the own bit at the end of xmit also with jumbo frames.
> 
> Fixes: 0e80bdc9a72d ("stmmac: first frame prep at the end of xmit routine")
> Fixes: 487e2e22ab79 ("net: stmmac: Set OWN bit for jumbo frames")
> Signed-off-by: Aaro Koskinen <aaro.koskinen@...ia.com>

Applied with the "remaining" typo fixed.