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-rw-r--r--Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
index 2d6bc8d94380..fdde0ae6d521 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
@@ -470,3 +470,6 @@ EACCES
Or the ``which`` field was set to ``V4L2_CTRL_WHICH_REQUEST_VAL`` but the
device does not support requests.
+
+ Or if there is an attempt to set an inactive control and the driver is
+ not capable of caching the new value until the control is active again.