Commits
Huang Shijie committed f3a77097810
ENGR00170901-2 IMX/UART : add a wait queue for DMA RX in SMP The DMA RX thread may run on another CPU, while the application runs on one CPU. The application will close the uart when it finishes the required reading. But the DMA RX thread maybe still running in this situation. So add a wait queue to synchronize the __TWO__ sides in the SMP. Signed-off-by: Huang Shijie <b32955@freescale.com>