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path: root/drivers/scsi/sd_dif.c
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Diffstat (limited to 'drivers/scsi/sd_dif.c')
-rw-r--r--drivers/scsi/sd_dif.c25
1 files changed, 6 insertions, 19 deletions
diff --git a/drivers/scsi/sd_dif.c b/drivers/scsi/sd_dif.c
index e52d5bc42bc4..04998f36e507 100644
--- a/drivers/scsi/sd_dif.c
+++ b/drivers/scsi/sd_dif.c
@@ -366,7 +366,8 @@ void sd_dif_config_host(struct scsi_disk *sdkp)
*
* Type 3 does not have a reference tag so no remapping is required.
*/
-int sd_dif_prepare(struct request *rq, sector_t hw_sector, unsigned int sector_sz)
+void sd_dif_prepare(struct request *rq, sector_t hw_sector,
+ unsigned int sector_sz)
{
const int tuple_sz = sizeof(struct sd_dif_tuple);
struct bio *bio;
@@ -378,7 +379,7 @@ int sd_dif_prepare(struct request *rq, sector_t hw_sector, unsigned int sector_s
sdkp = rq->bio->bi_bdev->bd_disk->private_data;
if (sdkp->protection_type == SD_DIF_TYPE3_PROTECTION)
- return 0;
+ return;
phys = hw_sector & 0xffffffff;
@@ -397,10 +398,9 @@ int sd_dif_prepare(struct request *rq, sector_t hw_sector, unsigned int sector_s
for (j = 0 ; j < iv->bv_len ; j += tuple_sz, sdt++) {
- if (be32_to_cpu(sdt->ref_tag) != virt)
- goto error;
+ if (be32_to_cpu(sdt->ref_tag) == virt)
+ sdt->ref_tag = cpu_to_be32(phys);
- sdt->ref_tag = cpu_to_be32(phys);
virt++;
phys++;
}
@@ -410,16 +410,6 @@ int sd_dif_prepare(struct request *rq, sector_t hw_sector, unsigned int sector_s
bio->bi_flags |= (1 << BIO_MAPPED_INTEGRITY);
}
-
- return 0;
-
-error:
- kunmap_atomic(sdt);
- sd_printk(KERN_ERR, sdkp, "%s: virt %u, phys %u, ref %u, app %4x\n",
- __func__, virt, phys, be32_to_cpu(sdt->ref_tag),
- be16_to_cpu(sdt->app_tag));
-
- return -EILSEQ;
}
/*
@@ -463,10 +453,7 @@ void sd_dif_complete(struct scsi_cmnd *scmd, unsigned int good_bytes)
return;
}
- if (be32_to_cpu(sdt->ref_tag) != phys &&
- sdt->app_tag != 0xffff)
- sdt->ref_tag = 0xffffffff; /* Bad ref */
- else
+ if (be32_to_cpu(sdt->ref_tag) == phys)
sdt->ref_tag = cpu_to_be32(virt);
virt++;