RE: [PATCH v4 5/6] scsi: ufshpb: Add handing of device reset HPB regions Infos in HPB device mode

[Daejun Park]

Hi Bean Huo,
 
>In UFS HPB Spec JESD220-3A,
> 
>"5.8. Active and inactive information upon power cycle
>...
>When the device is powered off by the host, the device may restore L2P map data
>upon power up or build from the host’s HPB READ command. In case device powered
>up and lost HPB information, device can signal to the host through HPB Sense data,
>by setting HPB Operation as ‘2’ which will inform the host that device reset HPB
>information."
> 
>Therefore, for HPB device control mode, if the UFS device is reset via the RST_N
>pin, the active region information in the device will be reset. If the host side
>receives this notification from the device side, it is recommended to inactivate
>all active regions in the host's HPB cache.
> 
>Signed-off-by: Bean Huo <beanhuo@xxxxxxxxxx>
>Reviewed-by: Keoseong Park <keosung.park@xxxxxxxxxxx>
 
Here is my reviewed-by tag.
Reviewed-by: Daejun Park <daejun7.park@xxxxxxxxxxx>
 
Thanks,
Daejun