[PATCH 1/2] dm: blk: assign media ID to block devices

[Simon Glass]

Hi Heinrich,

On Thu, 15 Sept 2022 at 14:02, Heinrich Schuchardt
<heinrich.schuchardt at canonical.com> wrote:
>
> Currently block devices are only identified by uclass_id and device number.
> When dealing with removable media this is not enough to uniquely identify
> the medium.
>
> E.g. after host unbind, host bind we can have the same device number but a
> different backing file.
>
> The EFI specification uses a 32bit number media ID to identify media. Add a
> matching field to the block device descriptor.
>
> Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt at canonical.com>
> ---
>  drivers/block/blk-uclass.c | 16 +++++++++++++++-
>  include/blk.h              | 11 +++++++++++
>  2 files changed, 26 insertions(+), 1 deletion(-)

Shouldn't this be handled by connecting the  EFI data to its udevice.
I think Takahiro has been looking at this?

NAK to any EFI fields in blk_desc, in any case

Regards,
Simon