netdev - Re: [PATCH v2] net: lantiq: Add locking for TX DMA channel

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Message-ID: <CAFBinCA8qOhVPeLDugs4pvXsEOfC8V5jbPmgP_qZUjQdGG-NgQ@mail.gmail.com>
Date:   Fri, 13 Nov 2020 21:54:13 +0100
From:   Martin Blumenstingl <martin.blumenstingl@...glemail.com>
To:     David Miller <davem@...emloft.net>
Cc:     Hauke Mehrtens <hauke@...ke-m.de>, kuba@...nel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2] net: lantiq: Add locking for TX DMA channel

On Thu, Sep 24, 2020 at 3:01 AM David Miller <davem@...emloft.net> wrote:
>
> From: Hauke Mehrtens <hauke@...ke-m.de>
> Date: Tue, 22 Sep 2020 23:41:12 +0200
>
> > The TX DMA channel data is accessed by the xrx200_start_xmit() and the
> > xrx200_tx_housekeeping() function from different threads. Make sure the
> > accesses are synchronized by acquiring the netif_tx_lock() in the
> > xrx200_tx_housekeeping() function too. This lock is acquired by the
> > kernel before calling xrx200_start_xmit().
> >
> > Signed-off-by: Hauke Mehrtens <hauke@...ke-m.de>
>
> Applied [...]
what is the procedure to have this patch included in the 5.4 and 5.9
-stable trees as well?
this commit is already in mainline as f9317ae5523f99999fb54c513ebabbb2bc887ddf

After more testing other users have confirmed that this patch works
In hindsight it should have carried Fixes: fe1a56420cf2ec ("net:
lantiq: Add Lantiq / Intel VRX200 Ethernet driver")


Thank you!
Martin