quoted

SCSI mid layer may send commands to lower driver without initializing private

data.

quoted

For example, scsi_send_eh_cmnd() may send TEST_UNIT_READY and
REQUEST_SENSE to lower layer driver without initializing private data.

Right. Thanks for pointing out this path that I wasn't aware of. My suggestion
would be to add a little more detail in the commit message, including identifying
this path where the private data isn't zero'ed. Some future developer will wonder
what's going on and appreciate having the specific reason provided.

I sent v2 adding more details to the comment.

Long