netdev - Re: [PATCH 1/2] net/stmmac: don't go through ethtool to start autonegociation

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Message-ID: <4DCCD025.4090100@st.com>
Date:	Fri, 13 May 2011 08:31:01 +0200
From:	Giuseppe CAVALLARO <peppe.cavallaro@...com>
To:	David Decotigny <decot@...gle.com>
Cc:	Giuseppe CAVALLARO <peppe.cavallaro@...com>,
	"David S. Miller" <davem@...emloft.net>,
	Joe Perches <joe@...ches.com>,
	Stanislaw Gruszka <sgruszka@...hat.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] net/stmmac: don't go through ethtool to start autonegociation

On 5/10/2011 3:47 PM, Giuseppe CAVALLARO wrote:
> On 5/10/2011 2:19 AM, David Decotigny wrote:
>> The driver used to call phy's ethtool configuration routine to start
>> autonegociation. This change has it call directly phy's routine to
>> start autonegociation.
>>
>> IMPORTANT: initial version was hiding phy_start_aneg() return value,
>>            this patch returns it (<0 upon error).
>>
>> Tested: module compiles, NOT tested on real hardware.
>> Signed-off-by: David Decotigny <decot@...gle.com>
> 
> Sorry for the delay, I'm doing some tests with the stmmac on a "real"
> HW. I'll come back asap.


Hello.

I've tested the patch and, as discussed with David, I have sent it again
plus a new fix in the stmmac_set_pauseparam I have done while testing
ethtool -A|-a on my ST box.

Best Regards,
Peppe

> 
> Regards
> Peppe
> 
>> ---
>>  drivers/net/stmmac/stmmac_ethtool.c |   13 ++-----------
>>  1 files changed, 2 insertions(+), 11 deletions(-)
>>
>> diff --git a/drivers/net/stmmac/stmmac_ethtool.c b/drivers/net/stmmac/stmmac_ethtool.c
>> index 6f5aaeb..9c05cf0 100644
>> --- a/drivers/net/stmmac/stmmac_ethtool.c
>> +++ b/drivers/net/stmmac/stmmac_ethtool.c
>> @@ -236,17 +236,8 @@ stmmac_set_pauseparam(struct net_device *netdev,
>>  	priv->flow_ctrl = new_pause;
>>  
>>  	if (phy->autoneg) {
>> -		if (netif_running(netdev)) {
>> -			struct ethtool_cmd cmd = { .cmd = ETHTOOL_SSET };
>> -			/* auto-negotiation automatically restarted */
>> -			cmd.supported = phy->supported;
>> -			cmd.advertising = phy->advertising;
>> -			cmd.autoneg = phy->autoneg;
>> -			ethtool_cmd_speed_set(&cmd, phy->speed);
>> -			cmd.duplex = phy->duplex;
>> -			cmd.phy_address = phy->addr;
>> -			ret = phy_ethtool_sset(phy, &cmd);
>> -		}
>> +		if (netif_running(netdev))
>> +			ret = phy_start_aneg(phy);
>>  	} else
>>  		priv->hw->mac->flow_ctrl(priv->ioaddr, phy->duplex,
>>  					 priv->flow_ctrl, priv->pause);
> 
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