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| author | Martin K. Petersen <martin.petersen@oracle.com> | 2012-08-28 14:29:35 -0400 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-09-24 12:11:00 +0400 |
| commit | d974e4265dbd35db118c318176727ecb7f469de3 (patch) | |
| tree | fbec9c25dbed708722d334601ed0adcf38f210cd /include/scsi/scsi_device.h | |
| parent | 8172499aae4d375334cfe6361900929c3b31a03f (diff) | |
| download | lwn-d974e4265dbd35db118c318176727ecb7f469de3.tar.gz lwn-d974e4265dbd35db118c318176727ecb7f469de3.zip | |
[SCSI] Disable DIF on Hitachi Ultrastar 15K300
Hitachi Ultrastar 15K300 is quirky. Disable T10 PI (DIF).
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'include/scsi/scsi_device.h')
| -rw-r--r-- | include/scsi/scsi_device.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 9895f69294fc..88fae8d20154 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -156,6 +156,7 @@ struct scsi_device { unsigned is_visible:1; /* is the device visible in sysfs */ unsigned can_power_off:1; /* Device supports runtime power off */ unsigned wce_default_on:1; /* Cache is ON by default */ + unsigned no_dif:1; /* T10 PI (DIF) should be disabled */ DECLARE_BITMAP(supported_events, SDEV_EVT_MAXBITS); /* supported events */ struct list_head event_list; /* asserted events */ @@ -476,6 +477,9 @@ static inline int scsi_device_enclosure(struct scsi_device *sdev) static inline int scsi_device_protection(struct scsi_device *sdev) { + if (sdev->no_dif) + return 0; + return sdev->scsi_level > SCSI_2 && sdev->inquiry[5] & (1<<0); } |