Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Subject: Re: [PATCH] net: ethernet: ravb: Fix release of refclk
To:     Adam Ford <aford173@gmail.com>, netdev@vger.kernel.org
Cc:     aford@beaconembedded.com, geert@linux-m68k.org,
        "David S. Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>, Andrew Lunn <andrew@lunn.ch>,
        linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org
References: <20210417132329.6886-1-aford173@gmail.com>
From:   Sergei Shtylyov <sergei.shtylyov@gmail.com>
Organization: Brain-dead Software
Message-ID: <ae2f6201-3646-4896-0246-8ae849df3a4f@gmail.com>
Date:   Mon, 19 Apr 2021 12:38:33 +0300
User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:78.0) Gecko/20100101
 Thunderbird/78.9.1
MIME-Version: 1.0
In-Reply-To: <20210417132329.6886-1-aford173@gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Precedence: bulk

Hello!

On 17.04.2021 16:23, Adam Ford wrote:

> The call to clk_disable_unprepare() can happen before priv is
> initialized.

    Mhm, how's that? :-/

> This means moving clk_disable_unprepare out of
> out_release into a new label.
> 
> Fixes: 8ef7adc6beb2("net: ethernet: ravb: Enable optional refclk")
> Signed-off-by: Adam Ford <aford173@gmail.com>
> 
> diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
> index 8c84c40ab9a0..64a545c98ff2 100644
> --- a/drivers/net/ethernet/renesas/ravb_main.c
> +++ b/drivers/net/ethernet/renesas/ravb_main.c
[...]
> @@ -2252,8 +2252,9 @@ static int ravb_probe(struct platform_device *pdev)
>   	/* Stop PTP Clock driver */
>   	if (chip_id != RCAR_GEN2)
>   		ravb_ptp_stop(ndev);
> -out_release:
> +out_unprepare_refclk:

    I'd really prefer out_disable_refclk.

>   	clk_disable_unprepare(priv->refclk);
> +out_release:
>   	free_netdev(ndev);
>   
>   	pm_runtime_put(&pdev->dev);

MBR, Sergei