[PATCH] scsi: mpt3sas: Register devices during SANITIZE

[vince@palmit.com.au]

A SAS disk being sanitized responds to TEST UNIT READY with NOT
READY, ASC 0x04, ASCQ 0x1b. mpt3sas discovery maps this sense to
DEVICE_START_UNIT and issues START UNIT repeatedly. The drive stays
NOT READY until the sanitize operation completes, causing discovery
to exhaust its retry budget and decline SCSI device registration.

Allow registration only for the SANITIZE IN PROGRESS sense, so sd/sg
can expose the target while retaining its actual NOT READY state.
All other sense dispositions are unchanged.

On an LSI SAS3008 with an HGST HUH728080AL4200, unpatched Linux
7.2.11 retried discovery 145 times without registering the device.
Linux 6.18.55 registered the same sanitizing drive. With the
equivalent 7.2.11 fix the disk registered as /dev/sda (0 B) and
/dev/sg0 while TEST UNIT READY still reported 02/04/1b and 47.32%
SANITIZE progress. Another SAS drive continued to enumerate.

This updated variant uses the named 0x041b sense constant introduced
in newer kernels. It passed static review on the current SCSI
for-next branch but has not been independently boot-tested there.

Fixes: aee682fad6cd ("scsi: mpt3sas: Improve device discovery and readiness handling for slow devices")
Assisted-by: LLM
Signed-off-by: Vincent YUE <vince@palmit.com.au>
---
 drivers/scsi/mpt3sas/mpt3sas_scsih.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
index 085d4672d..a77bbc3d2 100644
--- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c
@@ -7700,7 +7700,9 @@ _scsih_determine_disposition(struct MPT3SAS_ADAPTER *ioc,
 				u16 scode = scsi_sense_code(sense_info.asc,
 							    sense_info.ascq);
 
-				if (scode ==
+				if (scode == LU_NOT_READY_SANITIZE_IN_PROGRESS)
+					rc = DEVICE_READY;
+				else if (scode ==
 				    LU_NOT_READY_MANUAL_INTERVENTION_REQUIRED ||
 				    scode ==
 				    LU_NOT_ACCESSIBLE_TARGET_PORT_IN_STANDBY_STATE ||
-- 
2.56.0


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