On 2017/1/24 0:18, Sricharan R wrote:

This series calls the dma ops configuration for the devices
at a generic place so that it works for all busses.
The dma_configure_ops for a device is now called during
the device_attach callback just before the probe of the
bus/driver is called. Similarly dma_deconfigure is called during
device/driver_detach path.

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.

Took the reworked patches [2] from Robin's branch and
rebased on top of Lorenzo's ACPI IORT ARM support series [3].

* Tested with platform and pci devices for probe deferral
  and reprobe on arm64 based platform.
* Need help for testing with ACPI.

Cherry picked this patch set with no conflict with my platform
msi patches, and test it on Hisilicon D03 (ARM64 platform with
SMMUv3) with ACPI, it boots ok as before and the native NIC and
SAS (platform devices) are working properly.

for ACPI and the core code changes:

Tested-by: Hanjun Guo <redacted>

Thanks
Hanjun