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Some devices do not implement all their controls in a way that complies
with the UVC specification. This is for instance the case for several
devices that do not support the disabled mode for the power line
frequency control. Add a mechanism to allow per-device control mapping
overrides to avoid errors when accessing non-compliant controls.
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>