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Linux/Documentation/userspace-api/media/dvb/dmx-munmap.rst

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Diff markup

Differences between /Documentation/userspace-api/media/dvb/dmx-munmap.rst (Architecture i386) and /Documentation/userspace-api/media/dvb/dmx-munmap.rst (Architecture sparc)


  1 .. SPDX-License-Identifier: GFDL-1.1-no-invari      1 .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later
  2 .. c:namespace:: DTV.dmx                            2 .. c:namespace:: DTV.dmx
  3                                                     3 
  4 .. _dmx-munmap:                                     4 .. _dmx-munmap:
  5                                                     5 
  6 ************                                        6 ************
  7 DVB munmap()                                        7 DVB munmap()
  8 ************                                        8 ************
  9                                                     9 
 10 Name                                               10 Name
 11 ====                                               11 ====
 12                                                    12 
 13 dmx-munmap - Unmap device memory                   13 dmx-munmap - Unmap device memory
 14                                                    14 
 15 .. warning:: This API is still experimental.       15 .. warning:: This API is still experimental.
 16                                                    16 
 17 Synopsis                                           17 Synopsis
 18 ========                                           18 ========
 19                                                    19 
 20 .. code-block:: c                                  20 .. code-block:: c
 21                                                    21 
 22     #include <unistd.h>                            22     #include <unistd.h>
 23     #include <sys/mman.h>                          23     #include <sys/mman.h>
 24                                                    24 
 25 .. c:function:: int munmap( void *start, size_     25 .. c:function:: int munmap( void *start, size_t length )
 26                                                    26 
 27 Arguments                                          27 Arguments
 28 =========                                          28 =========
 29                                                    29 
 30 ``start``                                          30 ``start``
 31     Address of the mapped buffer as returned b     31     Address of the mapped buffer as returned by the
 32     :c:func:`mmap()` function.                     32     :c:func:`mmap()` function.
 33                                                    33 
 34 ``length``                                         34 ``length``
 35     Length of the mapped buffer. This must be      35     Length of the mapped buffer. This must be the same value as given to
 36     :c:func:`mmap()`.                              36     :c:func:`mmap()`.
 37                                                    37 
 38 Description                                        38 Description
 39 ===========                                        39 ===========
 40                                                    40 
 41 Unmaps a previously with the :c:func:`mmap()`      41 Unmaps a previously with the :c:func:`mmap()` function mapped
 42 buffer and frees it, if possible.                  42 buffer and frees it, if possible.
 43                                                    43 
 44 Return Value                                       44 Return Value
 45 ============                                       45 ============
 46                                                    46 
 47 On success :c:func:`munmap()` returns 0, on fa     47 On success :c:func:`munmap()` returns 0, on failure -1 and the
 48 ``errno`` variable is set appropriately:           48 ``errno`` variable is set appropriately:
 49                                                    49 
 50 EINVAL                                             50 EINVAL
 51     The ``start`` or ``length`` is incorrect,      51     The ``start`` or ``length`` is incorrect, or no buffers have been
 52     mapped yet.                                    52     mapped yet.
                                                      

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