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

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Message-ID: <4F8FAB12.2060108@st.com>
Date:	Thu, 19 Apr 2012 11:35:06 +0530
From:	Viresh Kumar <viresh.kumar@...com>
To:	Giuseppe CAVALLARO <peppe.cavallaro@...com>
Cc:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	spear-devel <spear-devel@...t.st.com>
Subject: Re: [net-next 3/4] stmmac: verify the dma_cfg platform fields

On 4/19/2012 11:18 AM, Giuseppe CAVALLARO wrote:
> 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>

I really can't review it, as i am not stmmac expert. But, i am sure
the problem i highlighted will be resolved by this patch.

Another thing, as SPEAr is using stmmac, can you always cc spear-devel@...t.st.com
for all stmmac patches.

-- 
viresh
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