On ARM64 platform, it will set 'dummy_dma_ops' for device dma_ops if
it did not call 'arch_setup_dma_ops' at device creation time, that will
cause failure when setting the dma mask for device.
Thus this patch set the xhci device dma_ops from the parent device if
the xhci device dma_ops is 'dummy_dma_ops'.
Changes since v1:
- Add CONFIG_ARM64 macro.
Signed-off-by: Baolin Wang <baolin.w...@linaro.org>
---
drivers/usb/dwc3/host.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
index c679f63..edb666d 100644
--- a/drivers/usb/dwc3/host.c
+++ b/drivers/usb/dwc3/host.c
@@ -32,6 +32,11 @@ int dwc3_host_init(struct dwc3 *dwc)
return -ENOMEM;
}
+#ifdef CONFIG_ARM64
+ if (get_dma_ops(&xhci->dev) == get_dma_ops(NULL))
+ xhci->dev.archdata.dma_ops = get_dma_ops(dwc->dev);
+#endif
+
dma_set_coherent_mask(&xhci->dev, dwc->dev->coherent_dma_mask);
xhci->dev.parent = dwc->dev;
--
1.7.9.5
