Re: [PATCH v5 4/8] char: rpmb: provide a user space interface

[Pavel Machek <pavel@ucw.cz>]

On Mon 2016-07-18 23:27:49, Tomas Winkler wrote:
> The user space API is achieved via two synchronous IOCTL.

IOCTLs?

> Simplified one, RPMB_IOC_REQ_CMD, were read result cycles is performed
> by the framework on behalf the user and second, RPMB_IOC_SEQ_CMD where
> the whole RPMB sequence including RESULT_READ is supplied by the caller.
> The latter is intended for  easier adjusting  of the  applications that
> use MMC_IOC_MULTI_CMD ioctl.

Why "  "?

> 
> Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>

> +
> +static long rpmb_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
> +{
> +	return __rpmb_ioctl(fp, cmd, (void __user *)arg);
> +}
> +
> +#ifdef CONFIG_COMPAT
> +static long rpmb_compat_ioctl(struct file *fp, unsigned int cmd,
> +			      unsigned long arg)
> +{
> +	return	__rpmb_ioctl(fp, cmd, compat_ptr(arg));
> +}
> +#endif /* CONFIG_COMPAT */

Description of the ioctl is missing, and it should certainly be
designed in a way that it does not need compat support.


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