linux-kernel - Re: [PATCH 01/16] pata_parport: add core driver (PARIDE replacement)

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Date:   Tue, 8 Mar 2022 07:59:05 +0100
From:   Christoph Hellwig <hch@....de>
To:     Ondrej Zary <linux@...y.sk>
Cc:     Damien Le Moal <damien.lemoal@...nsource.wdc.com>,
        Christoph Hellwig <hch@....de>, Jens Axboe <axboe@...nel.dk>,
        Tim Waugh <tim@...erelk.net>, linux-block@...r.kernel.org,
        linux-parport@...ts.infradead.org, linux-ide@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/16] pata_parport: add core driver (PARIDE
 replacement)

> +
> +static void pata_parport_dev_release(struct device *dev)
> +{
> +	struct pi_adapter *pi = container_of(dev, struct pi_adapter, dev);
> +
> +	kfree(pi);
> +}
>
> +void pata_parport_bus_release(struct device *dev)
> +{
> +	/* nothing to do here but required to avoid warning on device removal */
> +}
> +
> +static struct bus_type pata_parport_bus_type = {
> +	.name = DRV_NAME,
> +};
> +
> +static struct device pata_parport_bus = {
> +	.init_name = DRV_NAME,
> +	.release = pata_parport_bus_release,
> +};

Hmm, wouldn't it make sense to let the libata device hang off the device
in struct pardevice?