Re: [PATCH] net: phy: corrected the return value for genphy_check_and_restart_aneg

[Heiner Kallweit]

On 25.02.2020 13:22, Sudheesh Mavila wrote:
> When auto-negotiation is not required, return value should be zero.
> 
> Signed-off-by: Sudheesh Mavila <sudheesh.mavila@xxxxxxx>
> ---
>  drivers/net/phy/phy_device.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
> index 6a5056e0ae77..36cde3dac4c3 100644
> --- a/drivers/net/phy/phy_device.c
> +++ b/drivers/net/phy/phy_device.c
> @@ -1806,10 +1806,13 @@ int genphy_check_and_restart_aneg(struct phy_device *phydev, bool restart)
>  			restart = true;
>  	}
>  
> -	if (restart)
> -		ret = genphy_restart_aneg(phydev);
> +	/* Only restart aneg if we are advertising something different
> +	 * than we were before.
> +	 */
> +	if (restart > 0)

In addition to what Russell and Andrew commented already:
- You shouldn't compare a bool with an int. There's no need to change
  the original condition.
- The comment isn't really needed, and it's wrong. See the comment few
  lines earlier.
- After this change the initialization of ret isn't needed any longer.

> +		return genphy_restart_aneg(phydev);
>  
> -	return ret;
> +	return 0;
>  }
>  EXPORT_SYMBOL(genphy_check_and_restart_aneg);
>  
>