3.16.80-rc1 review patch. If anyone has any objections, please let me know. ------------------ 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. Link: https://lore.kernel.org/r/20190903101840.16483-1-oneukum@xxxxxxxx Signed-off-by: Oliver Neukum <oneukum@xxxxxxxx> Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx> [bwh: Backported to 3.16: sshdr is a struct not a pointer here] Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> --- drivers/scsi/sd.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -1470,7 +1470,8 @@ 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 */ return 0;
