linux-imx

LF-711:[8QM_MEK/8QXP_MEK]mxc:vpu_malone:stream may hang due to the event msg hasn't process in time

firmware write event message to message buffer, and trigger an interrupt,
driver will read the message and store it into a fifo. and call queue_work.
If the work is scheduling but have exited the while loop,
it may cause the event won't be processed until another event received.
So in some case, the stream may hang
as the next event is depends on the driver process the current event.

vpu_windsor may have the same issue.

Signed-off-by: Ming Qian <ming.qian@nxp.com>