4630 clean stale references to ddi_iopb_alloc and ddi_iopb_free
4634 undocument scsi_hba_attach() and ddi_dma_lim(9s)

*** 1217,1228 ****
   * the object that any cached references to the object are
   * now stale (and flush or invalidate these stale cache references
   * as necessary).
   *
   * The function ddi_dma_sync() provides the general interface with
!  * respect to this capability. Generally, ddi_dma_free() (below) may
!  * be used in preference to ddi_dma_sync() as ddi_dma_free() calls
   * ddi_dma_sync().
   *
   * Returns 0 if all caches that exist and are specified by cache_flags
   * are successfully operated on, else -1.
   *
--- 1217,1228 ----
   * the object that any cached references to the object are
   * now stale (and flush or invalidate these stale cache references
   * as necessary).
   *
   * The function ddi_dma_sync() provides the general interface with
!  * respect to this capability. Generally, ddi_dma_unbind_handle()
!  * (below) may be used in preference to ddi_dma_sync() as it calls
   * ddi_dma_sync().
   *
   * Returns 0 if all caches that exist and are specified by cache_flags
   * are successfully operated on, else -1.
   *
*** 1243,1253 ****
   * Inquiring minds want to know when ddi_dma_sync should be used:
   *
   * +    When an object is mapped for dma, assume that an
   *      implicit ddi_dma_sync() is done for you.
   *
!  * +    When an object is unmapped (ddi_dma_free()), assume
   *      that an implicit ddi_dma_sync() is done for you.
   *
   * +    At any time between the two times above that the
   *      memory object may have been modified by either
   *      the DMA device or a processor and you wish that
--- 1243,1253 ----
   * Inquiring minds want to know when ddi_dma_sync should be used:
   *
   * +    When an object is mapped for dma, assume that an
   *      implicit ddi_dma_sync() is done for you.
   *
!  * +    When an object is unmapped (ddi_dma_unbind_handle()), assume
   *      that an implicit ddi_dma_sync() is done for you.
   *
   * +    At any time between the two times above that the
   *      memory object may have been modified by either
   *      the DMA device or a processor and you wish that