|
|
@@ -105,15 +105,6 @@ present with the &VIDIOC-DBG-G-CHIP-INFO; ioctl.</para>
|
|
|
<constant>V4L2_CHIP_MATCH_SUBDEV</constant>,
|
|
|
<structfield>match.addr</structfield> selects the nth sub-device.</para>
|
|
|
|
|
|
- <note>
|
|
|
- <title>Success not guaranteed</title>
|
|
|
-
|
|
|
- <para>Due to a flaw in the Linux &i2c; bus driver these ioctls may
|
|
|
-return successfully without actually reading or writing a register. To
|
|
|
-catch the most likely failure we recommend a &VIDIOC-DBG-G-CHIP-INFO;
|
|
|
-call confirming the presence of the selected &i2c; chip.</para>
|
|
|
- </note>
|
|
|
-
|
|
|
<para>These ioctls are optional, not all drivers may support them.
|
|
|
However when a driver supports these ioctls it must also support
|
|
|
&VIDIOC-DBG-G-CHIP-INFO;. Conversely it may support
|
Hans Verkuil