Re: [PATCH 08/10] mpt3sas: set EEDP-escape-flags for SAS35 devices.

[Tomas Henzl]

On 20.10.2016 14:20, Suganath Prabu S wrote:
> An UNMAP command on a PI formatted device will leave the Logical Block
> Application Tag and Logical Block Reference Tag as all F's (for those LBAs
> that are unmapped). To avoid IO errors if those LBAs are subsequently read
> before they are written with valid tag fields, the MPI SCSI IO requests
> need to set the EEDPFlags element EEDP Escape Mode field, Bits [7:6]
> appropriately. A value of 2 should be set to disable all PI checks if the
> Logical Block Application Tag is 0xFFFF for PI types 1 and 2.  A value
> of 3 should be set to disable all PI checks if the Logical Block
> Application Tag is 0xFFFF and the Logical Block Reference Tag is
> 0xFFFFFFFF for PI type 3.
>
> Signed-off-by: Chaitra P B <chaitra.basappa@xxxxxxxxxxxx>
> Signed-off-by: Sathya Prakash <sathya.prakash@xxxxxxxxxxxx>
> Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@xxxxxxxxxxxx>

Reviewed-by: Tomas Henzl <thenzl@xxxxxxxxxx>

Tomas