[PATCH 4.14 087/119] scsi: sd: Ignore a failure to sync cache due to lack of authorization
From: Greg Kroah-Hartman
Date: Sun Oct 27 2019 - 17:10:52 EST
From: Oliver Neukum <oneukum@xxxxxxxx>
commit 21e3d6c81179bbdfa279efc8de456c34b814cfd2 upstream.
I've got a report about a UAS drive enclosure reporting back Sense: Logical
unit access not authorized if the drive it holds is password protected.
While the drive is obviously unusable in that state as a mass storage
device, it still exists as a sd device and when the system is asked to
perform a suspend of the drive, it will be sent a SYNCHRONIZE CACHE. If
that fails due to password protection, the error must be ignored.
Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
drivers/scsi/sd.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
@@ -1658,7 +1658,8 @@ static int sd_sync_cache(struct scsi_dis
/* we need to evaluate the error return */
if (scsi_sense_valid(sshdr) &&
(sshdr->asc == 0x3a || /* medium not present */
- sshdr->asc == 0x20)) /* invalid command */
+ sshdr->asc == 0x20 || /* invalid command */
+ (sshdr->asc == 0x74 && sshdr->ascq == 0x71))) /* drive is password locked */
/* this is no error here */