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V4L/DVB: V4L2 Spec: fix V4L2_CTRL_TYPE_CTRL_CLASS documentation

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The spec says that the control ID for these types of controls is the same
as that of the control class. But it should read: 'control class + 1'.

Signed-off-by: Hans Verkuil <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
This commit is contained in:
Hans Verkuil 2010-04-06 06:41:28 -03:00 • committed by Mauro Carvalho Chehab
commit 860553023b
1 changed files with 1 additions and 1 deletions
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Documentation/DocBook/v4l/vidioc-queryctrl.xml
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@ -325,7 +325,7 @@ should be part of the control documentation.</entry>
<entry>n/a</entry>
<entry>This is not a control. When
<constant>VIDIOC_QUERYCTRL</constant> is called with a control ID
equal to a control class code (see <xref linkend="ctrl-class" />), the
equal to a control class code (see <xref linkend="ctrl-class" />) + 1, the
ioctl returns the name of the control class and this control type.
Older drivers which do not support this feature return an
&EINVAL;.</entry>