[media] exynos4-is: Open shouldn't fail when sensor entity is not linked
In order to allow for automatic media device entities linking from the level of libv4l plugin the open system call shouldn't fail, as the libv4l plugins can begin their job not until it succeeds. This patch allows for leaving the pipeline not linked on open and postpones verifying it to the moment when streamon callback is called. Signed-off-by: Jacek Anaszewski <j.anaszewski@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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