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

*** 22,33 ****
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #include <sys/debug.h>
  #include <sys/types.h>
  #include <sys/param.h>
  #include <sys/time.h>
  #include <sys/buf.h>
--- 22,31 ----
*** 63,75 ****
  {
          struct ddi_umem_cookie *umem_cookie;
  
          umem_cookie = kmem_zalloc(sizeof (struct ddi_umem_cookie), KM_SLEEP);
  
-         if (umem_cookie == NULL)
-                 return (NULL);
- 
          umem_cookie->cvaddr = kva;
          umem_cookie->type = KMEM_NON_PAGEABLE;
          umem_cookie->size = size;
  
          return ((ddi_umem_cookie_t *)umem_cookie);
--- 61,70 ----