When deferring a dmabuf export on an import call, there may be a
failure to export as the GEM object is not referenced by the kernel
mode driver. To get around this, do a non-deferred export and
immediately close the dmabuf FD to keep FD creation to a minimum.
This way, the GEM object will have a kernel mode driver reference
when a deferred export is done.
Also a bad dmabuf FD sent over a socket may not be received by an import
reader and this can cause a hang.
Set a 10 second timer so that importer is not blocking indefinitely.
Change-Id: I11a9b5ec64aa2e16fd6aecdf46c34e4eb56ccfd0
Jonathan Kim
eb2100daad