5253 kmem_alloc/kmem_zalloc won't fail with KM_SLEEP
5254 getrbuf won't fail with KM_SLEEP

*** 739,755 ****
                          return (EFAULT);
                  head = STRUCT_FGET(adh, head);
                  if (head < 0 || head >= dadkp->dad_phyg.g_head)
                          return (ENXIO);
                  secbuf = kmem_zalloc(NBPSCTR, KM_SLEEP);
!                 if (!secbuf)
!                         return (ENOMEM);
                  bp = getrbuf(KM_SLEEP);
-                 if (!bp) {
-                         kmem_free(secbuf, NBPSCTR);
-                         return (ENOMEM);
-                 }
  
                  bp->b_edev = dev;
                  bp->b_dev  = cmpdev(dev);
                  bp->b_flags = B_BUSY;
                  bp->b_resid = 0;
--- 739,750 ----
                          return (EFAULT);
                  head = STRUCT_FGET(adh, head);
                  if (head < 0 || head >= dadkp->dad_phyg.g_head)
                          return (ENXIO);
                  secbuf = kmem_zalloc(NBPSCTR, KM_SLEEP);
! 
                  bp = getrbuf(KM_SLEEP);
  
                  bp->b_edev = dev;
                  bp->b_dev  = cmpdev(dev);
                  bp->b_flags = B_BUSY;
                  bp->b_resid = 0;
*** 1689,1701 ****
  {
          struct buf *bp;
          int err;
          struct cmpkt *pktp;
  
!         if ((bp = getrbuf(KM_SLEEP)) == NULL) {
!                 return (ENOMEM);
!         }
          pktp = dadk_pktprep(dadkp, NULL, bp, dadk_rmb_iodone, NULL, NULL);
          if (!pktp) {
                  freerbuf(bp);
                  return (ENOMEM);
          }
--- 1684,1694 ----
  {
          struct buf *bp;
          int err;
          struct cmpkt *pktp;
  
!         bp = getrbuf(KM_SLEEP);
          pktp = dadk_pktprep(dadkp, NULL, bp, dadk_rmb_iodone, NULL, NULL);
          if (!pktp) {
                  freerbuf(bp);
                  return (ENOMEM);
          }