linux-kernel - Re: [PATCH net-next 2/4] net: phy: mscc-miim: remove redundant timeout check

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Message-ID: <20200526210456.GH3972@piout.net>
Date:   Tue, 26 May 2020 23:04:56 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Antoine Tenart <antoine.tenart@...tlin.com>
Cc:     davem@...emloft.net, andrew@...n.ch, f.fainelli@...il.com,
        hkallweit1@...il.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, thomas.petazzoni@...tlin.com,
        allan.nielsen@...rochip.com
Subject: Re: [PATCH net-next 2/4] net: phy: mscc-miim: remove redundant
 timeout check

On 26/05/2020 18:22:54+0200, Antoine Ténart wrote:
> readl_poll_timeout already returns -ETIMEDOUT if the condition isn't
> satisfied, there's no need to check again the condition after calling
> it. Remove the redundant timeout check.
> 
> Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@...tlin.com>

> ---
>  drivers/net/phy/mdio-mscc-miim.c | 8 ++------
>  1 file changed, 2 insertions(+), 6 deletions(-)
> 
> diff --git a/drivers/net/phy/mdio-mscc-miim.c b/drivers/net/phy/mdio-mscc-miim.c
> index 0b7544f593fb..42119f661452 100644
> --- a/drivers/net/phy/mdio-mscc-miim.c
> +++ b/drivers/net/phy/mdio-mscc-miim.c
> @@ -43,12 +43,8 @@ static int mscc_miim_wait_ready(struct mii_bus *bus)
>  	struct mscc_miim_dev *miim = bus->priv;
>  	u32 val;
>  
> -	readl_poll_timeout(miim->regs + MSCC_MIIM_REG_STATUS, val,
> -			   !(val & MSCC_MIIM_STATUS_STAT_BUSY), 50, 10000);
> -	if (val & MSCC_MIIM_STATUS_STAT_BUSY)
> -		return -ETIMEDOUT;
> -
> -	return 0;
> +	return readl_poll_timeout(miim->regs + MSCC_MIIM_REG_STATUS, val,
> +				  !(val & MSCC_MIIM_STATUS_STAT_BUSY), 50, 10000);
>  }
>  
>  static int mscc_miim_read(struct mii_bus *bus, int mii_id, int regnum)
> -- 
> 2.26.2
> 

-- 
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com