linux-kernel - Re: [PATCH v2 1/4] rpmb: add Replay Protected Memory Block (RPMB) subsystem

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Date:   Tue, 5 Apr 2022 14:59:37 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Alex Bennée <alex.bennee@...aro.org>,
        linux-kernel@...r.kernel.org
Cc:     maxim.uvarov@...aro.org, joakim.bech@...aro.org,
        ulf.hansson@...aro.org, ilias.apalodimas@...aro.org,
        arnd@...aro.org, ruchika.gupta@...aro.org, tomas.winkler@...el.com,
        yang.huang@...el.com, bing.zhu@...el.com,
        Matti.Moell@...nsynergy.com, hmo@...nsynergy.com,
        linux-mmc@...r.kernel.org, linux-scsi@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Arnd Bergmann <arnd.bergmann@...aro.org>,
        Eric Biggers <ebiggers@...nel.org>
Subject: Re: [PATCH v2 1/4] rpmb: add Replay Protected Memory Block (RPMB)
 subsystem

On 4/5/22 02:37, Alex Bennée wrote:
> +int rpmb_get_write_count(struct rpmb_dev *rdev, int len, u8 *request, int rlen, u8 *resp)
> +{
> +	int err;
> +
> +	if (!rdev)
> +		return -EINVAL;
> +
> +	mutex_lock(&rdev->lock);
> +	err = -EOPNOTSUPP;
> +	if (rdev->ops && rdev->ops->get_write_count)
> +		err = rdev->ops->get_write_count(rdev->dev.parent, rdev->target,
> +						 len, request, rlen, resp);
> +	mutex_unlock(&rdev->lock);
> +
> +	return err;
> +}

The names rpmb_get_write_count() and get_write_count() look confusing to 
me since these functions query the write counter. How about adding "er" 
at the end of both function names?

Are there any plans to add an implementation of struct rpmb_ops for UFS 
devices?

Thanks,

Bart.