linux-kernel - Re: [PATCH] net: eth: altera: Resolve false errors from MSGDMA to TSE

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Message-Id: <20150425.144400.1784698109604961465.davem@davemloft.net>
Date:	Sat, 25 Apr 2015 14:44:00 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	vbridger@...nsource.altera.com
Cc:	netdev@...r.kernel.org, nios2-dev@...ts.rocketboards.org,
	linux-kernel@...r.kernel.org, vbridger@...era.com,
	cnphoon@...era.com, ennoerlangen@...il.com
Subject: Re: [PATCH] net: eth: altera: Resolve false errors from MSGDMA to
 TSE

From: Vince Bridgers <vbridger@...nsource.altera.com>
Date: Fri, 24 Apr 2015 02:32:07 -0500

> From: Chee Nouk Phoon <cnphoon@...era.com>
> 
> This patch resolves false errors from MSGDMA in TX mSGDMA MM to ST
> mode, and is a continuation of the patch recently submitted by Andrea
> Oetken. The MSGDMA had a logic bug that masked detection of this issue
> prior to Quartus 14.1/Build 164. When the MSGDMA logic bug was addressed
> in Quartus 14.1/Build 164, the driver problem was exposed.
> 
> The problem is corrected by making sure MSGDMA_DESC_CTL_TR_ERR_IRQ is not
> set for any of the transmit DMA descriptors, and only used for receive
> descriptors.
> 
> Fixes: 71cd26e altera tse: Error-Bit on tx-avalon-stream always set.
> 
> Signed-off-by: Chee Nouk Phoon <cnphoon@...era.com>
> Signed-off-by: Vince Bridgers <vbridger@...nsource.altera.com>a
> Cc: Andreas Oetken <ennoerlangen@...il.com>

Applied.
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