On 2015/10/21 23:52, Suravee Suthikulpanit wrote:
> This patch adds support for setting up PCI device DMA coherency from
> ACPI _CCA object that should normally be specified in the DSDT node
> of its PCI host bridge.
>
> Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
> CC: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
> CC: Catalin Marinas <catalin.marinas@xxxxxxx>
> CC: Rob Herring <robh+dt@xxxxxxxxxx>
> CC: Will Deacon <will.deacon@xxxxxxx>
> CC: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>
> CC: Murali Karicheri <m-karicheri2@xxxxxx>
> ---
> drivers/pci/probe.c | 19 ++++++++++++++-----
> 1 file changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
> index 09264f8..6e9f7e6 100644
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -1642,17 +1642,26 @@ static void pci_set_msi_domain(struct pci_dev *dev)
> * @dev: ptr to pci_dev struct of the PCI device
> *
> * Function to update PCI devices's DMA configuration using the same
> - * info from the OF node of host bridge's parent (if any).
> + * info from the OF node or ACPI node of host bridge's parent (if any).
> */
> static void pci_dma_configure(struct pci_dev *dev)
> {
> struct device *bridge = pci_get_host_bridge_device(dev);
>
> if (IS_ENABLED(CONFIG_OF) && dev->dev.of_node) {
> - if (!bridge->parent)
> - return;
> -
> - of_dma_configure(&dev->dev, bridge->parent->of_node);
> + if (bridge->parent)
> + of_dma_configure(&dev->dev,
> + bridge->parent->of_node);
> + } else if (has_acpi_companion(bridge)) {
> + struct acpi_device *adev = to_acpi_node(bridge->fwnode);
It's to_acpi_device_node() now in Rafael's tree.
Thanks
Hanjun
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