netdev - Re: [PATCH] net: fec: fix potential issue to avoid fec interrupt lost and crc error

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Message-Id: <20140220.131633.960783426585782185.davem@davemloft.net>
Date:	Thu, 20 Feb 2014 13:16:33 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	B38611@...escale.com
Cc:	b20596@...escale.com, netdev@...r.kernel.org
Subject: Re: [PATCH] net: fec: fix potential issue to avoid fec interrupt
 lost and crc error

From: Fugang Duan <B38611@...escale.com>
Date: Thu, 20 Feb 2014 18:14:39 +0800

> The current flow: Set TX BD ready, and then set "INT" and "PINS" bit to
> enable tx interrupt generation and crc checksum.
> 
> There has potential issue like as:
> CPU			fec uDMA
> Set tx ready bit
> 			uDMA start the BD transmission
> Set "INT" bit
> Set "PINS" bit
> ...
> 
> Above situation cause fec tx interrupt lost and fec MAC don't do
> CRC checksum. The patch fix the potential issue.
> 
> Signed-off-by: Fugang Duan <B38611@...escale.com>

Applied, thank you.
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