Re: [PATCH v2 0/4] rpmb subsystem, uapi and virtio-rpmb driver

Bart Van Assche
2022-04-06T21:24:06Z

On 4/6/22 11:12, Bean Huo wrote:
> It is from the ufs-utils.
>
> So, do you vote to add the UFS RPMB driver based on this new framework
> to resolve this conflict?

Are any applications using the RPMB code from ufs-utils? It seems to me
that the ufs-utils code doe not handle SCSI unit attentions correctly.
If a POWER ON unit attention is received as reply to a SECURITY PROTOCOL
OUT transaction, the write counter should be reread instead of retrying
the SECURITY PROTOCOL OUT command with the same write counter.

Regarding adding a UFS RPMB driver: that seems useful to me since
multiple applications make use of the UFS RPMB functionality. My
understanding is that currently storageproxyd multiplexes UFS RPMB
accesses in Android.

Thanks,

Bart.