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Subject: Re: [PATCH] ieee802154: ca8210: prevent memory leak
To:     Navid Emamdoost <navid.emamdoost@gmail.com>
Cc:     emamd001@umn.edu, smccaman@umn.edu, kjlu@umn.edu,
        Harry Morris <h.morris@cascoda.com>,
        Alexander Aring <alex.aring@gmail.com>,
        "David S. Miller" <davem@davemloft.net>,
        linux-wpan@vger.kernel.org, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <20190917224713.26371-1-navid.emamdoost@gmail.com>
From:   Stefan Schmidt <stefan@datenfreihafen.org>
Message-ID: <cda67450-267f-3c94-68b6-73ea8c4dfe2f@datenfreihafen.org>
Date:   Fri, 27 Sep 2019 22:01:08 +0200
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Hello.

On 18.09.19 00:47, Navid Emamdoost wrote:
> In ca8210_probe the allocated pdata needs to be assigned to
> spi_device->dev.platform_data before calling ca8210_get_platform_data.
> Othrwise when ca8210_get_platform_data fails pdata cannot be released.
> 
> Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
> ---
>   drivers/net/ieee802154/ca8210.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/ieee802154/ca8210.c b/drivers/net/ieee802154/ca8210.c
> index b188fce3f641..229d70a897ca 100644
> --- a/drivers/net/ieee802154/ca8210.c
> +++ b/drivers/net/ieee802154/ca8210.c
> @@ -3152,12 +3152,12 @@ static int ca8210_probe(struct spi_device *spi_device)
>   		goto error;
>   	}
>   
> +	priv->spi->dev.platform_data = pdata;
>   	ret = ca8210_get_platform_data(priv->spi, pdata);
>   	if (ret) {
>   		dev_crit(&spi_device->dev, "ca8210_get_platform_data failed\n");
>   		goto error;
>   	}
> -	priv->spi->dev.platform_data = pdata;
>   
>   	ret = ca8210_dev_com_init(priv);
>   	if (ret) {
> 

As Harry seems to be unavailable I am taking this patch directly.


This patch has been applied to the wpan tree and will be
part of the next pull request to net. Thanks!

regards
Stefan Schmidt