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[SCSI] sd: Correctly handle all combinations of DIF and DIX

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The old detection code couldn't handle all possible combinations of
DIX and DIF.  This version does, giving priority to DIX if the
controller is capable.

Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
This commit is contained in:
Martin K. Petersen
2008-09-19 18:47:21 -04:00
committed by James Bottomley
parent be922f478f
commit 9e06688e7d
3 changed files with 25 additions and 21 deletions
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drivers/scsi/sd.h
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@@ -99,7 +99,7 @@ struct sd_dif_tuple {
#if defined(CONFIG_BLK_DEV_INTEGRITY)
extern void sd_dif_op(struct scsi_cmnd *, unsigned int, unsigned int);
extern void sd_dif_op(struct scsi_cmnd *, unsigned int, unsigned int, unsigned int);
extern void sd_dif_config_host(struct scsi_disk *);
extern int sd_dif_prepare(struct request *rq, sector_t, unsigned int);
extern void sd_dif_complete(struct scsi_cmnd *, unsigned int);