Am Fri, 11 Oct 2024 12:33:56 -0500 schrieb Judith Mendez <jm@xxxxxx>: > Currently in omap_8250_shutdown, the dma->rx_running > flag is set to zero in omap_8250_rx_dma_flush. Next > pm_runtime_get_sync is called, which is a runtime > resume call stack which can re-set the flag. When the > call omap_8250_shutdown returns, the flag is expected > to be UN-SET, but this is not the case. This is causing > issues the next time UART is re-opened and omap_8250_rx_dma > is called. Fix by moving pm_runtime_get_sync before the > omap_8250_rx_dma_flush. > > Signed-off-by: Bin Liu <b-liu@xxxxxx> > Signed-off-by: Judith Mendez <jm@xxxxxx> Is this a theorectical problem or some real practical problem? So you are running a system with runtime pm enabled on serial console. How did you come across this issue? I could run the serial console/getty with runtime pm autosuspend enabled without issues all the years. Regards, Andreas
