diff options
Diffstat (limited to 'Documentation/DocBook')
| -rw-r--r-- | Documentation/DocBook/media/v4l/io.xml | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/DocBook/media/v4l/io.xml b/Documentation/DocBook/media/v4l/io.xml index e09025db92bd..21a3dde8f95d 100644 --- a/Documentation/DocBook/media/v4l/io.xml +++ b/Documentation/DocBook/media/v4l/io.xml @@ -88,7 +88,7 @@ function.<footnote> <structfield>capabilities</structfield> field of &v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl is set. There are two streaming methods, to determine if the memory mapping flavor is -supported applications must call the &VIDIOC-REQBUFS; ioctl.</para> +supported applications must call the &VIDIOC-REQBUFS; ioctl with the memory type set to <constant>V4L2_MEMORY_MMAP</constant>.</para> <para>Streaming is an I/O method where only pointers to buffers are exchanged between application and driver, the data itself is not @@ -369,7 +369,7 @@ rest should be evident.</para> <structfield>capabilities</structfield> field of &v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl is set. If the particular user pointer method (not only memory mapping) is supported must be -determined by calling the &VIDIOC-REQBUFS; ioctl.</para> +determined by calling the &VIDIOC-REQBUFS; ioctl with the memory type set to <constant>V4L2_MEMORY_USERPTR</constant>.</para> <para>This I/O method combines advantages of the read/write and memory mapping methods. Buffers (planes) are allocated by the application |
