netdev - Re: [PATCH v5 1/1] net: ethernet: davinci_cpdma: Add boundary for rx and tx descriptors

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Date:	Fri, 18 Jan 2013 14:28:39 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	mugunthanvnm@...com
Cc:	netdev@...r.kernel.org, s.hauer@...gutronix.de
Subject: Re: [PATCH v5 1/1] net: ethernet: davinci_cpdma: Add boundary for
 rx and tx descriptors

From: Mugunthan V N <mugunthanvnm@...com>
Date: Thu, 17 Jan 2013 22:01:34 +0530

> When there is heavy transmission traffic in the CPDMA, then Rx descriptors
> memory is also utilized as tx desc memory looses all rx descriptors and the
> driver stops working then.
> 
> This patch adds boundary for tx and rx descriptors in bd ram dividing the
> descriptor memory to ensure that during heavy transmission tx doesn't use
> rx descriptors.
> 
> This patch is already applied to davinci_emac driver, since CPSW and
> davici_dmac shares the same CPDMA, moving the boundry seperation from
> Davinci EMAC driver to CPDMA driver which was done in the following
> commit
> 
> commit 86d8c07ff2448eb4e860e50f34ef6ee78e45c40c
> Author: Sascha Hauer <s.hauer@...gutronix.de>
> Date:   Tue Jan 3 05:27:47 2012 +0000
> 
>     net/davinci: do not use all descriptors for tx packets
 ...
> Signed-off-by: Mugunthan V N <mugunthanvnm@...com>

Applied to net-next, thanks.
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