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

*** 1880,1894 ****
          pmcs_chunk_t    *pchunk = NULL;
  
          pwp->cip_dma_attr.dma_attr_align = sizeof (uint32_t);
  
          pchunk = kmem_zalloc(sizeof (pmcs_chunk_t), KM_SLEEP);
-         if (pchunk == NULL) {
-                 pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL,
-                     "Not enough memory for DMA chunks");
-                 return (-1);
-         }
  
          if (pmcs_dma_setup(pwp, &pwp->cip_dma_attr, &pchunk->acc_handle,
              &pchunk->dma_handle, nsize, (caddr_t *)&pchunk->addrp,
              &pchunk->dma_addr) == B_FALSE) {
                  pmcs_prt(pwp, PMCS_PRT_DEBUG, NULL, NULL,
--- 1880,1889 ----