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Diffstat (limited to 'Documentation/driver-api/media/v4l2-dev.rst')
| -rw-r--r-- | Documentation/driver-api/media/v4l2-dev.rst | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/Documentation/driver-api/media/v4l2-dev.rst b/Documentation/driver-api/media/v4l2-dev.rst index 99e3b5fa74..d5cb19b21a 100644 --- a/Documentation/driver-api/media/v4l2-dev.rst +++ b/Documentation/driver-api/media/v4l2-dev.rst @@ -157,14 +157,6 @@ changing the e.g. exposure of the webcam. Of course, you can always do all the locking yourself by leaving both lock pointers at ``NULL``. -If you use the old :ref:`videobuf framework <vb_framework>` then you must -pass the :c:type:`video_device`->lock to the videobuf queue initialize -function: if videobuf has to wait for a frame to arrive, then it will -temporarily unlock the lock and relock it afterwards. If your driver also -waits in the code, then you should do the same to allow other -processes to access the device node while the first process is waiting for -something. - In the case of :ref:`videobuf2 <vb2_framework>` you will need to implement the ``wait_prepare()`` and ``wait_finish()`` callbacks to unlock/lock if applicable. If you use the ``queue->lock`` pointer, then you can use the helper functions |