:ref:`v4l2_frequency <v4l2-frequency>` to the respective tuner or
modulator number (only input devices have tuners, only output devices
have modulators), zero out the ``reserved`` array and call the
-:ref:`VIDIOC_G_FREQUENCY` ioctl with a pointer to this structure. The
+:ref:`VIDIOC_G_FREQUENCY <VIDIOC_G_FREQUENCY>` ioctl with a pointer to this structure. The
driver stores the current frequency in the ``frequency`` field.
To change the current tuner or modulator radio frequency applications