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authorOliver Neukum <oneukum@suse.com>2019-09-03 12:18:39 +0200
committerMartin K. Petersen <martin.petersen@oracle.com>2019-09-30 23:52:14 -0400
commit21e3d6c81179bbdfa279efc8de456c34b814cfd2 (patch)
tree605980d8e3d8b11c180eb31ec230ddf3c0b570dc /drivers/scsi/sd.c
parent0aabb6b699f72dca96988d3f428e222f932dc889 (diff)
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scsi: sd: Ignore a failure to sync cache due to lack of authorization
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. Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20190903101840.16483-1-oneukum@suse.com Signed-off-by: Oliver Neukum <oneukum@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/sd.c')
-rw-r--r--drivers/scsi/sd.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 91af598f2f53..0f96eb0ddbfa 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -1655,7 +1655,8 @@ static int sd_sync_cache(struct scsi_disk *sdkp, struct scsi_sense_hdr *sshdr)
/* 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;