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Subject[PATCH 07/14] media: dmx-fread.rst: specify how DMX_CHECK_CRC works
In the past, the documentation used to say that, if a CRC error
was found, a "-ECRC" error would be returned. That's not true:
the DVB core will just silently ignore such errors.

So, add an explicit note about that.

Signed-off-by: Mauro Carvalho Chehab <>
Documentation/media/uapi/dvb/dmx-fread.rst | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/Documentation/media/uapi/dvb/dmx-fread.rst b/Documentation/media/uapi/dvb/dmx-fread.rst
index cb6cedbb47f6..36ba851bc0af 100644
--- a/Documentation/media/uapi/dvb/dmx-fread.rst
+++ b/Documentation/media/uapi/dvb/dmx-fread.rst
@@ -38,6 +38,13 @@ data. The filtered data is transferred from the driver’s internal
circular buffer to buf. The maximum amount of data to be transferred is
implied by count.

+.. note::
+ if a section filter created with
+ :c:type:`DMX_CHECK_CRC <dmx_sct_filter_params>` flag set,
+ data that fails on CRC check will be silently ignored.
Return Value

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