diff options
Diffstat (limited to 'Documentation/userspace-api/media/v4l/func-munmap.rst')
| -rw-r--r-- | Documentation/userspace-api/media/v4l/func-munmap.rst | 23 |
1 files changed, 6 insertions, 17 deletions
diff --git a/Documentation/userspace-api/media/v4l/func-munmap.rst b/Documentation/userspace-api/media/v4l/func-munmap.rst index 18a9941b47ab..077d58333904 100644 --- a/Documentation/userspace-api/media/v4l/func-munmap.rst +++ b/Documentation/userspace-api/media/v4l/func-munmap.rst @@ -1,11 +1,5 @@ -.. Permission is granted to copy, distribute and/or modify this -.. document under the terms of the GNU Free Documentation License, -.. Version 1.1 or any later version published by the Free Software -.. Foundation, with no Invariant Sections, no Front-Cover Texts -.. and no Back-Cover Texts. A copy of the license is included at -.. Documentation/userspace-api/media/fdl-appendix.rst. -.. -.. TODO: replace it to GFDL-1.1-or-later WITH no-invariant-sections +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later +.. c:namespace:: V4L .. _func-munmap: @@ -18,7 +12,6 @@ Name v4l2-munmap - Unmap device memory - Synopsis ======== @@ -27,37 +20,33 @@ Synopsis #include <unistd.h> #include <sys/mman.h> - .. c:function:: int munmap( void *start, size_t length ) - :name: v4l2-munmap Arguments ========= ``start`` Address of the mapped buffer as returned by the - :ref:`mmap() <func-mmap>` function. + :c:func:`mmap()` function. ``length`` Length of the mapped buffer. This must be the same value as given to - :ref:`mmap() <func-mmap>` and returned by the driver in the struct + :c:func:`mmap()` and returned by the driver in the struct :c:type:`v4l2_buffer` ``length`` field for the single-planar API and in the struct :c:type:`v4l2_plane` ``length`` field for the multi-planar API. - Description =========== -Unmaps a previously with the :ref:`mmap() <func-mmap>` function mapped +Unmaps a previously with the :c:func:`mmap()` function mapped buffer and frees it, if possible. - Return Value ============ -On success :ref:`munmap() <func-munmap>` returns 0, on failure -1 and the +On success :c:func:`munmap()` returns 0, on failure -1 and the ``errno`` variable is set appropriately: EINVAL |