tree fd8a4887e9fafdd171cb734430511e5a67bf2844
parent 000e4f9a5bcf86fb52914c445ce5634b65e910a2
author Hans Verkuil <hans.verkuil@cisco.com> 1389957926 -0300
committer Mauro Carvalho Chehab <m.chehab@samsung.com> 1405609036 -0300

[media] v4l2-ctrls: compare values only once

When setting a control the control's new value is compared to the current
value twice: once by new_to_cur(), once by cluster_changed(). Not a big
deal when dealing with simple values, but it can be a problem when dealing
with compound types or arrays. So fix this: cluster_changed() sets the
has_changed flag, which is used by new_to_cur() instead of having to do
another compare.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>