Hello, This series is a complement to [1], which changed APB DMA driver's runtime PM to make DMA clock enabled only during of actual transfer activity. Unfortunately turned out that it wasn't enough because serial driver keeps RX DMA active all the time in practice and that's what the first patch of this series addresses. Secondly, I noticed that DMA synchronization could be improved, it is also addressed now. Please review and apply, thanks in advance! Dmitry Osipenko (2): tty: serial: tegra: Activate RX DMA transfer by request tty: serial: tegra: Optimize DMA buffer synchronization drivers/tty/serial/serial-tegra.c | 94 ++++++++++++++++++------------- 1 file changed, 55 insertions(+), 39 deletions(-) -- 2.24.0
