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Diffstat (limited to 'Documentation/media/uapi/dvb/ca-set-descr.rst')
| -rw-r--r-- | Documentation/media/uapi/dvb/ca-set-descr.rst | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/Documentation/media/uapi/dvb/ca-set-descr.rst b/Documentation/media/uapi/dvb/ca-set-descr.rst index 70f7b3cf12ad..a6c47205ffd8 100644 --- a/Documentation/media/uapi/dvb/ca-set-descr.rst +++ b/Documentation/media/uapi/dvb/ca-set-descr.rst @@ -28,16 +28,19 @@ Arguments ``msg`` Pointer to struct :c:type:`ca_descr`. - Description ----------- -.. note:: This ioctl is undocumented. Documentation is welcome. - +CA_SET_DESCR is used for feeding descrambler CA slots with descrambling +keys (refered as control words). Return Value ------------ -On success 0 is returned, on error -1 and the ``errno`` variable is set -appropriately. The generic error codes are described at the +On success 0 is returned. + +On error -1 is returned, and the ``errno`` variable is set +appropriately. + +Generic error codes are described at the :ref:`Generic Error Codes <gen-errors>` chapter. |