From: John Jacques <john.jacq...@intel.com>
Even with 'dma-coherent' in the device tree USB node, the XHCI
driver creates devices without copying the 'archdata' structure,
where the dma_coherent field is defined. To handle this, set
the dma_coherent field in all devices that are created by the
XHCI driver (match 'xhci-hcd' in the device name).
Signed-off-by: John Jacques <john.jacq...@intel.com>
---
drivers/usb/dwc3/dwc3-axxia.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-axxia.c b/drivers/usb/dwc3/dwc3-axxia.c
index 59321b8..a0de833 100644
--- a/drivers/usb/dwc3/dwc3-axxia.c
+++ b/drivers/usb/dwc3/dwc3-axxia.c
@@ -79,6 +79,20 @@ static int axxia_dwc3_remove(struct platform_device *pdev)
return 0;
}
+void
+arch_setup_pdev_archdata(struct platform_device *pdev)
+{
+
+ printk("setup_pdev_archdata %s\n", pdev->name);
+
+ if (strncmp(pdev->name, "xhci-hcd", strlen("xhci-hcd")) == 0) {
+ printk("setting dma_coherent\n");
+ pdev->dev.archdata.dma_coherent = 1;
+
+ }
+
+}
+
static const struct of_device_id adwc3_of_match[] = {
{ .compatible = "intel,axxia-dwc3", },
{},
--
1.9.1
--
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