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authorHans Verkuil <hans.verkuil@cisco.com>2012-01-11 07:37:54 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-01-16 09:38:29 -0200
commitdacd4fa37dbafe209a90d6d5b729d2257df4b734 (patch)
treeed3b9519c1013cafb6c9da63299806910c25c5fd /Documentation
parent6055b12ae0f433314cba98f423fb8c5fc211ca8d (diff)
downloadlinux-linaro-stable-dacd4fa37dbafe209a90d6d5b729d2257df4b734.tar.gz
[media] V4L2 Spec: improve the G/S_INPUT/OUTPUT documentation
As Rupert pointed out, the phrase "It is good practice" should be replaced with "You must". Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Cc: Rupert Eibauer <Rupert.Eibauer@ces.ch> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-input.xml4
-rw-r--r--Documentation/DocBook/media/v4l/vidioc-g-output.xml5
2 files changed, 5 insertions, 4 deletions
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-input.xml b/Documentation/DocBook/media/v4l/vidioc-g-input.xml
index 08ae82f131f2..1d43065090dd 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-input.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-input.xml
@@ -61,8 +61,8 @@ desired input in an integer and call the
<constant>VIDIOC_S_INPUT</constant> ioctl with a pointer to this
integer. Side effects are possible. For example inputs may support
different video standards, so the driver may implicitly switch the
-current standard. It is good practice to select an input before
-querying or negotiating any other parameters.</para>
+current standard. Because of these possible side effects applications
+must select an input before querying or negotiating any other parameters.</para>
<para>Information about video inputs is available using the
&VIDIOC-ENUMINPUT; ioctl.</para>
diff --git a/Documentation/DocBook/media/v4l/vidioc-g-output.xml b/Documentation/DocBook/media/v4l/vidioc-g-output.xml
index fd45f1c13ccf..4533068ecb8a 100644
--- a/Documentation/DocBook/media/v4l/vidioc-g-output.xml
+++ b/Documentation/DocBook/media/v4l/vidioc-g-output.xml
@@ -61,8 +61,9 @@ desired output in an integer and call the
<constant>VIDIOC_S_OUTPUT</constant> ioctl with a pointer to this integer.
Side effects are possible. For example outputs may support different
video standards, so the driver may implicitly switch the current
-standard. It is good practice to select an output before querying or
-negotiating any other parameters.</para>
+standard.
+standard. Because of these possible side effects applications
+must select an output before querying or negotiating any other parameters.</para>
<para>Information about video outputs is available using the
&VIDIOC-ENUMOUTPUT; ioctl.</para>