On Mon, Jan 23, 2017 at 5:18 PM, Sricharan R <sricharan@xxxxxxxxxxxxxx> wrote: > Configuring DMA ops at probe time will allow deferring device probe when > the IOMMU isn't available yet. The dma_configure for the device is > now called from the generic device_attach callback just before the > bus/driver probe is called. This way, configuring the DMA ops for the > device would be called at the same place for all bus_types, hence the > deferred probing mechanism should work for all buses as well. > > pci_bus_add_devices (platform/amba)(_device_create/driver_register) > | | > pci_bus_add_device (device_add/driver_register) > | | > device_attach device_initial_probe > | | > __device_attach_driver __device_attach_driver > | > driver_probe_device > | > really_probe > | > dma_configure > > Similarly on the device/driver_unregister path __device_release_driver is > called which inturn calls dma_deconfigure. > > This patch changes the dma ops configuration to probe time for > both OF and ACPI based platform/amba/pci bus devices. > > Signed-off-by: Sricharan R <sricharan@xxxxxxxxxxxxxx> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
