netdev - Re: phy_connect

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Date:	Tue, 27 Oct 2009 14:10:54 +0100
From:	Kristoffer Glembo <kristoffer@...sler.com>
To:	netdev@...r.kernel.org
Subject: Re: phy_connect_direct problem

Hi again,

Please forget about this. I'm obviously blind as I can't see the 
difference between adjust_state and adjust_link  ...

Best regards,
Kristoffer Glembo

Kristoffer Glembo wrote:
> Hi,
> 
> I'm in the process of converting an ethernet driver to using the PHY 
> layer, but ran into a problem where my adjust_state handler was never 
> called and the link did not go up ...
> 
> I use phy_connect to connect the PHY device with my ethernet driver. In 
> phy_connect_direct I found the following code:    
> 
> phy_prepare_link(phydev, handler);
> phy_start_machine(phydev, NULL);
> 
> So first the adjust_state is set to handler by phy_prepare_link and then 
> it is overwritten with the NULL parameter passed to phy_start_machine.
> 
> Maybe I'm abusing the PHY layer somehow since there are plenty of other 
> drivers using this interface. However the patch below solved the issue 
> for me.
> 
> Best regards,
> Kristoffer Glembo
> 
> 
> ---
>  drivers/net/phy/phy_device.c |    3 +--
>  1 files changed, 1 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
> index b10fedd..d27ca80 100644
> --- a/drivers/net/phy/phy_device.c
> +++ b/drivers/net/phy/phy_device.c
> @@ -311,8 +311,7 @@ int phy_connect_direct(struct net_device *dev, 
> struct phy_device *phydev,
>      if (rc)
>          return rc;
> 
> -    phy_prepare_link(phydev, handler);
> -    phy_start_machine(phydev, NULL);
> +    phy_start_machine(phydev, handler);
>      if (phydev->irq > 0)
>          phy_start_interrupts(phydev);
> 

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