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| author | Xiang Chen <chenxiang66@hisilicon.com> | 2020-01-09 04:12:24 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-17 21:47:03 +0300 |
| commit | e61a25a897db10686e2e0fc34689b2c01365e352 (patch) | |
| tree | 8311bc2dbf2f1ee17f50d6e077180808fcd2412f /drivers/scsi/sd.c | |
| parent | a8d900e8ce47bd46279b763945383335bbdab7ed (diff) | |
| download | linux-e61a25a897db10686e2e0fc34689b2c01365e352.tar.xz | |
scsi: sd: Clear sdkp->protection_type if disk is reformatted without PI
commit 465f4edaecc6c37f81349233e84d46246bcac11a upstream.
If an attached disk with protection information enabled is reformatted
to Type 0 the revalidation code does not clear the original protection
type and subsequent accesses will keep setting RDPROTECT/WRPROTECT.
Set the protection type to 0 if the disk reports PROT_EN=0 in READ
CAPACITY(16).
[mkp: commit desc]
Fixes: fe542396da73 ("[SCSI] sd: Ensure we correctly disable devices with unknown protection type")
Link: https://lore.kernel.org/r/1578532344-101668-1-git-send-email-chenxiang66@hisilicon.com
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index f8a09e6678d4..3591c3a7baf6 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -2195,8 +2195,10 @@ static int sd_read_protection_type(struct scsi_disk *sdkp, unsigned char *buffer u8 type; int ret = 0; - if (scsi_device_protection(sdp) == 0 || (buffer[12] & 1) == 0) + if (scsi_device_protection(sdp) == 0 || (buffer[12] & 1) == 0) { + sdkp->protection_type = 0; return ret; + } type = ((buffer[12] >> 1) & 7) + 1; /* P_TYPE 0 = Type 1 */ |