netdev - Re: [PATCH v1] net: bcmgenet: Use devm_clk_get

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Date:   Mon, 20 Apr 2020 11:33:07 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Doug Berger <opendmb@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        bcm-kernel-feedback-list@...adcom.com,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH v1] net: bcmgenet: Use devm_clk_get_optional() to get the
 clocks



On 4/20/2020 11:30 AM, Andy Shevchenko wrote:
> Conversion to devm_clk_get_optional() makes it explicit that clocks are
> optional. This change allows to handle deferred probe in case clocks are
> defined, but not yet probed. Due to above changes replace dev_dbg() by
> dev_err() and bail out in error case.
> 
> While here, check potential error when enable main clock.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>   .../net/ethernet/broadcom/genet/bcmgenet.c    | 25 +++++++++++--------
>   1 file changed, 15 insertions(+), 10 deletions(-)
> 
> diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
> index ef275db018f73..045f7b7f0b5d3 100644
> --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
> +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
> @@ -3487,13 +3487,16 @@ static int bcmgenet_probe(struct platform_device *pdev)
>   		priv->dma_max_burst_length = DMA_MAX_BURST_LENGTH;
>   	}
>   
> -	priv->clk = devm_clk_get(&priv->pdev->dev, "enet");
> +	priv->clk = devm_clk_get_optional(&priv->pdev->dev, "enet");
>   	if (IS_ERR(priv->clk)) {
> -		dev_dbg(&priv->pdev->dev, "failed to get enet clock\n");
> -		priv->clk = NULL;
> +		dev_err(&priv->pdev->dev, "failed to get enet clock\n");

Please maintain the dev_dbg() here and likewise for the rest of your 
changes. With that:

Acked-by: Florian Fainelli <f.fainelli@...il.com>
-- 
Florian