From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@redhat.com>
Subject: Re: [PATCH net] net: mvpp2: fix a txq_done race condition
Date: Tue, 18 Sep 2018 20:14:01 -0700 (PDT)
Message-ID: <20180918.201401.955097214067299890.davem@redhat.com>
References: <20180918145847.11318-1-antoine.tenart@bootlin.com>
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Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
        thomas.petazzoni@bootlin.com, maxime.chevallier@bootlin.com,
        gregory.clement@bootlin.com, miquel.raynal@bootlin.com,
        nadavh@marvell.com, stefanc@marvell.com, ymarkman@marvell.com,
        mw@semihalf.com
To: antoine.tenart@bootlin.com
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From: Antoine Tenart <antoine.tenart@bootlin.com>
Date: Tue, 18 Sep 2018 16:58:47 +0200

> When no Tx IRQ is available, the txq_done() routine (called from
> tx_done()) shouldn't be called from the polling function, as in such
> case it is already called in the Tx path thanks to an hrtimer. This
> mostly occurred when using PPv2.1, as the engine then do not have Tx
> IRQs.
> 
> Fixes: edc660fa09e2 ("net: mvpp2: replace TX coalescing interrupts with hrtimer")
> Reported-by: Stefan Chulski <stefanc@marvell.com>
> Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>

Applied and queued up for -stable.