linux-kernel - Re: [PATCH] net: netcp: remove call to netif_carrier

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Message-ID: <553A5EA8.4010908@ti.com>
Date:	Fri, 24 Apr 2015 11:18:00 -0400
From:	Murali Karicheri <m-karicheri2@...com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
CC:	<netdev@...r.kernel.org>, <davem@...emloft.net>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: netcp: remove call to netif_carrier_(on/off) for
 MAC to Phy interface

On 04/24/2015 09:33 AM, Sergei Shtylyov wrote:
> Hello.
>
> On 4/23/2015 10:17 PM, Murali Karicheri wrote:
>
>> Currently when interface type is MAC to Phy, netif_carrier_(on/off)
>> is called which is not needed as Phy lib already updates the carrier
>> status to net stack. This is needed only for other interface types
>
>> Signed-off-by: Murali Karicheri <m-karicheri2@...com>
>> ---
>>   drivers/net/ethernet/ti/netcp_ethss.c |    8 ++++++--
>>   1 file changed, 6 insertions(+), 2 deletions(-)
>
>> diff --git a/drivers/net/ethernet/ti/netcp_ethss.c 
>> b/drivers/net/ethernet/ti/netcp_ethss.c
>> index 2bef655..0a1ef2e 100644
>> --- a/drivers/net/ethernet/ti/netcp_ethss.c
>> +++ b/drivers/net/ethernet/ti/netcp_ethss.c
>> @@ -1765,7 +1765,9 @@ static void 
>> netcp_ethss_link_state_action(struct gbe_priv *gbe_dev,
>>                        ALE_PORT_STATE,
>>                        ALE_PORT_STATE_FORWARD);
>>
>> -        if (ndev && slave->open)
>> +        if (ndev && slave->open &&
>> +            ((slave->link_interface != SGMII_LINK_MAC_PHY) &&
>> +            (slave->link_interface != XGMII_LINK_MAC_PHY)))
>
>    You don't need extra parens around &&.
You are right! I will fix it up and re-send.

Mruali
>
>>               netif_carrier_on(ndev);
>>       } else {
>>           writel(mac_control, GBE_REG_ADDR(slave, emac_regs,
>> @@ -1773,7 +1775,9 @@ static void 
>> netcp_ethss_link_state_action(struct gbe_priv *gbe_dev,
>>           cpsw_ale_control_set(gbe_dev->ale, slave->port_num,
>>                        ALE_PORT_STATE,
>>                        ALE_PORT_STATE_DISABLE);
>> -        if (ndev)
>> +        if (ndev &&
>> +            ((slave->link_interface != SGMII_LINK_MAC_PHY) &&
>> +            (slave->link_interface != XGMII_LINK_MAC_PHY)))
>
>    Likewise.
>
> WBR, Sergei
>


-- 
Murali Karicheri
Linux Kernel, Texas Instruments

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