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Subject[PATCH v2 21/27] media: ca-reset.rst: add some description to this ioctl
While we don't have any documentation for it, based on what's
there at Kaffeine and VDR, it seems that this command should
be issued before start using CA. So, document it as such.

Signed-off-by: Mauro Carvalho Chehab <>
Documentation/media/uapi/dvb/ca-reset.rst | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/media/uapi/dvb/ca-reset.rst b/Documentation/media/uapi/dvb/ca-reset.rst
index 477313121a65..a5dd2797a92f 100644
--- a/Documentation/media/uapi/dvb/ca-reset.rst
+++ b/Documentation/media/uapi/dvb/ca-reset.rst
@@ -28,7 +28,8 @@ Arguments

-.. note:: This ioctl is undocumented. Documentation is welcome.
+Puts the Conditional Access hardware on its initial state. It should
+be called before start using the CA hardware.

Return Value
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