[PATCHv2 7/7] cec-ioc-g-mode.rst: be more specific when EPERM is returned

[Hans Verkuil <hverkuil-cisco@xxxxxxxxx>]

Document which capability is required, rather than just saying
that "root permissions" are required.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
---
 Documentation/media/uapi/cec/cec-ioc-g-mode.rst | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/media/uapi/cec/cec-ioc-g-mode.rst b/Documentation/media/uapi/cec/cec-ioc-g-mode.rst
index c53bb5f73f0d..d0902f356d65 100644
--- a/Documentation/media/uapi/cec/cec-ioc-g-mode.rst
+++ b/Documentation/media/uapi/cec/cec-ioc-g-mode.rst
@@ -294,7 +294,8 @@ EINVAL
     The requested mode is invalid.
 
 EPERM
-    Monitor mode is requested without having root permissions
+    Monitor mode is requested, but the process does have the ``CAP_NET_ADMIN``
+    capability.
 
 EBUSY
     Someone else is already an exclusive follower or initiator.
-- 
2.20.1