diff options
Diffstat (limited to 'Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst')
-rw-r--r-- | Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst b/Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst new file mode 100644 index 000000000000..d042e8c86930 --- /dev/null +++ b/Documentation/userspace-api/media/dvb/fe-read-uncorrected-blocks.rst @@ -0,0 +1,59 @@ +.. 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 + +.. _FE_READ_UNCORRECTED_BLOCKS: + +************************** +FE_READ_UNCORRECTED_BLOCKS +************************** + +Name +==== + +FE_READ_UNCORRECTED_BLOCKS + +.. attention:: This ioctl is deprecated. + +Synopsis +======== + +.. c:function:: int ioctl( int fd, FE_READ_UNCORRECTED_BLOCKS, uint32_t *ublocks) + :name: FE_READ_UNCORRECTED_BLOCKS + + +Arguments +========= + +``fd`` + File descriptor returned by :c:func:`open() <dvb-fe-open>`. + +``ublocks`` + The total number of uncorrected blocks seen by the driver so far. + + +Description +=========== + +This ioctl call returns the number of uncorrected blocks detected by the +device driver during its lifetime. For meaningful measurements, the +increment in block count during a specific time interval should be +calculated. For this command, read-only access to the device is +sufficient. + + +Return Value +============ + +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. |