diff options
| author | Martin K. Petersen <martin.petersen@oracle.com> | 2012-08-28 20:29:35 +0200 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-09-24 10:11:00 +0200 |
| commit | d974e4265dbd35db118c318176727ecb7f469de3 (patch) | |
| tree | fbec9c25dbed708722d334601ed0adcf38f210cd | |
| parent | [SCSI] sd: Allow protection_type to be overridden (diff) | |
| download | linux-d974e4265dbd35db118c318176727ecb7f469de3.tar.xz linux-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>
| -rw-r--r-- | drivers/scsi/scsi_devinfo.c | 1 | ||||
| -rw-r--r-- | drivers/scsi/scsi_scan.c | 3 | ||||
| -rw-r--r-- | include/scsi/scsi_device.h | 4 | ||||
| -rw-r--r-- | include/scsi/scsi_devinfo.h | 1 |
4 files changed, 9 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_devinfo.c b/drivers/scsi/scsi_devinfo.c index cf8dfab9489f..43fca9170bf2 100644 --- a/drivers/scsi/scsi_devinfo.c +++ b/drivers/scsi/scsi_devinfo.c @@ -172,6 +172,7 @@ static struct { {"HITACHI", "DF400", "*", BLIST_REPORTLUN2}, {"HITACHI", "DF500", "*", BLIST_REPORTLUN2}, {"HITACHI", "DISK-SUBSYSTEM", "*", BLIST_REPORTLUN2}, + {"HITACHI", "HUS1530", "*", BLIST_NO_DIF}, {"HITACHI", "OPEN-", "*", BLIST_REPORTLUN2}, {"HITACHI", "OP-C-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, {"HITACHI", "3380-", "*", BLIST_SPARSELUN | BLIST_LARGELUN}, diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c index 56a93794c470..0a224e29c3f1 100644 --- a/drivers/scsi/scsi_scan.c +++ b/drivers/scsi/scsi_scan.c @@ -911,6 +911,9 @@ static int scsi_add_lun(struct scsi_device *sdev, unsigned char *inq_result, if (*bflags & BLIST_RETRY_HWERROR) sdev->retry_hwerror = 1; + if (*bflags & BLIST_NO_DIF) + sdev->no_dif = 1; + transport_configure_device(&sdev->sdev_gendev); if (sdev->host->hostt->slave_configure) { 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); } diff --git a/include/scsi/scsi_devinfo.h b/include/scsi/scsi_devinfo.h index b4ddd3b18b4c..cc1f3e786ad7 100644 --- a/include/scsi/scsi_devinfo.h +++ b/include/scsi/scsi_devinfo.h @@ -30,4 +30,5 @@ #define BLIST_RETRY_HWERROR 0x400000 /* retry HARDWARE_ERROR */ #define BLIST_MAX_512 0x800000 /* maximum 512 sector cdb length */ #define BLIST_ATTACH_PQ3 0x1000000 /* Scan: Attach to PQ3 devices */ +#define BLIST_NO_DIF 0x2000000 /* Disable T10 PI (DIF) */ #endif |