netdev - Re: [net-next 3/4] stmmac: verify the dma

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Message-Id: <20120419.200920.574162353846148225.davem@davemloft.net>
Date:	Thu, 19 Apr 2012 20:09:20 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	peppe.cavallaro@...com
Cc:	netdev@...r.kernel.org, viresh.kumar@...com
Subject: Re: [net-next 3/4] stmmac: verify the dma_cfg platform fields

From: Giuseppe CAVALLARO <peppe.cavallaro@...com>
Date: Thu, 19 Apr 2012 07:48:21 +0200

> Recently the dma parameters that can be passed from the platform
> have been moved from the plat_stmmacenet_data to the stmmac_dma_cfg.
> 
> In case of this new structure is not well allocated the driver can
> fails. This is an example how this field is managed in ST platforms
> 
> static struct stmmac_dma_cfg gmac_dma_setting = {
>         .pbl = 32,
> };
> 
> static struct plat_stmmacenet_data stih415_ethernet_platform_data[] = {
> 	{
> 		.dma_cfg = &gmac_dma_setting,
> 		.has_gmac = 1,
> [snip]
> 
> This patch so verifies that the dma_cfg passed from the platform.
> In case of it is NULL there is no reason that the driver has to fail
> and some default values can be passed. These are ok for all the
> Synopsys chips and could impact on performances, only.
> 
> Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@...com>
> cc: Viresh Kumar <viresh.kumar@...com>

Applied.
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