15.12.2021 16:50, Akhil R пишет:

quoted

06.12.2021 16:00, Akhil R пишет:

quoted

+static const struct __maybe_unused dev_pm_ops tegra_dma_dev_pm_ops =

{

quoted

+     SET_LATE_SYSTEM_SLEEP_PM_OPS(tegra_dma_pm_suspend,
+tegra_dma_pm_resume) };

Why late?

To wait for the drivers using the dma to be suspended so that they
don't keep the dma busy.
Agree with the other comments.

Drivers are suspended in the opposite order to the probe order. DMA
controller driver is always probed first. The "late" is unneeded, please
see tegra20-apb-dma driver for the example.