On Wed, May 20, 2015 at 10:24:15AM +0100, Catalin Marinas wrote:

On Sat, May 16, 2015 at 01:59:00AM +0200, Rafael J. Wysocki wrote:

quoted

On Friday, May 15, 2015 04:23:11 PM Suravee Suthikulpanit wrote:

quoted

+/**
+ * pci_dma_configure - Setup DMA configuration
+ * @pci_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 or ACPI node of host bridge's parent (if any).
+ */
+static void pci_dma_configure(struct pci_dev *pci_dev)
+{
+	struct device *dev = &pci_dev->dev;
+	struct device *bridge = pci_get_host_bridge_device(pci_dev);
+	struct device *host = bridge->parent;
+	struct acpi_device *adev;
+
+	if (!host)
+		return;
+
+	if (acpi_disabled) {
+		of_dma_configure(dev, host->of_node);

I'd rather do

	if (IS_ENABLED(CONFIG_OF) && host->of_node) {
		of_dma_configure(dev, host->of_node);

Nitpick: do we need the CONFIG_OF check? If disabled, I don't think
anyone would set host->of_node.

Please ignore this, there is no point in checking host->of_node if
CONFIG_OF is disabled (I was just thinking from an arm64 perspective
where we always have CONFIG_OF enabled).

-- 
Catalin