netdev - Re: [PATCH v2] net: bcmgenet: fix uncleaned dma flags

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Message-Id: <20150823.230057.178618010826538491.davem@davemloft.net>
Date:	Sun, 23 Aug 2015 23:00:57 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jaedon.shin@...il.com
Cc:	f.fainelli@...il.com, pgynther@...gle.com, netdev@...r.kernel.org
Subject: Re: [PATCH v2] net: bcmgenet: fix uncleaned dma flags

From: Jaedon Shin <jaedon.shin@...il.com>
Date: Fri, 21 Aug 2015 10:08:26 +0900

> Clean the dma flags of multiq ring buffer int the interface stop
> process. This patch fixes that the genet is not running while the
> interface is re-enabled.
> 
> $ ifup eth0 - running after booting
> $ ifdown eth0
> $ ifup eth0 - not running and occur tx_timeout
> 
> The bcmgenet_dma_disable() in bcmgenet_open() do clean ring16 dma flag
> only. If the genet has multiq, the dma register is not cleaned. and
> bcmgenet_init_dma() is not done correctly. in case
> GENET_V2(tx_queues=4), tdma_ctrl has 0x1e after running
> bcmgenet_dma_disable().
> 
> Signed-off-by: Jaedon Shin <jaedon.shin@...il.com>

Applied, thanks.
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