[SCSI] scsi_debug: simplify offset calculation for dif_storep
dif_storep is declared as pointer to unsigned char type. But it is actually used to store vmalloced array of struct sd_dif_tuple. This changes the type of dif_storep to the pointer to struct sd_dif_tuple. It simplifies offset calculation for dif_storep and enables to remove hardcoded size of struct sd_dif_tuple. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Acked-by: Douglas Gilbert <dgilbert@interlog.com> Acked-by: "Martin K. Petersen" <martin.petersen@oracle.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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