scsi: ufs: rpmb: Retry power-on UNIT ATTENTION on the RPMB WLUN

After a power cycle, the first command sent to any UFS logical unit
completes with CHECK CONDITION reporting a power-on UNIT ATTENTION.  The
SCSI core surfaces this condition to the caller rather than retrying it.

For the RPMB well-known LU the first command after boot is the first RPMB
frame, and RPMB has no earlier, guaranteed access that could clear the
condition beforehand. The power-on UNIT ATTENTION therefore reaches RPMB
and fails that first frame, breaking RPMB on every cold boot.

The RPMB WLUN needs the power-on UNIT ATTENTION to be retried so that RPMB
works from the very first access after a power cycle.

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez@oss.qualcomm.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Stanley Jhu <stanleyjhu@google.com>
Link: https://patch.msgid.link/20260831154804.719528-2-jorge.ramirez@oss.qualcomm.com
Signed-off-by: Martin K. Petersen (Oracle) <mkp@kernel.org>

0 files changed, 0 insertions, 0 deletions