/* We have transfered a single byte (PIO mode?) and need to update the count of bytes remaining (total_xfer_length) and update the sg entry to either point to next byte in the current sg entry, or of already at the end to point to the start of the next sg entry  */
static void sg_subtract_one(struct ScsiReqBlk *srb)
/* We have transfered a single byte (PIO mode?) and need to update the count of bytes remaining (total_xfer_length) and update the sg entry to either point to next byte in the current sg entry, or of already at the end to point to the start of the next sg entry  */
static void sg_subtract_one(struct ScsiReqBlk *srb)
{
	sg_update_list(srb, srb->total_xfer_length - 1);
}