From: Felipe Balbi <balbi@xxxxxx>
if req->dma isn't DMA_ADDR_INVALID it means gadget driver
mapped the request or allocated from coherent, so it's
unnecessary to do anything.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/dwc3/gadget.c | 9 ---------
1 files changed, 0 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 6c64c73..2ea2fc8 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -71,11 +71,6 @@ void dwc3_map_buffer_to_dma(struct dwc3_request *req)
req->request.length, req->direction
? DMA_TO_DEVICE : DMA_FROM_DEVICE);
req->mapped = true;
- } else {
- dma_sync_single_for_device(dwc->dev, req->request.dma,
- req->request.length, req->direction
- ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
- req->mapped = false;
}
}
@@ -94,10 +89,6 @@ void dwc3_unmap_buffer_from_dma(struct dwc3_request *req)
? DMA_TO_DEVICE : DMA_FROM_DEVICE);
req->mapped = 0;
req->request.dma = DMA_ADDR_INVALID;
- } else {
- dma_sync_single_for_cpu(dwc->dev, req->request.dma,
- req->request.length, req->direction
- ? DMA_TO_DEVICE : DMA_FROM_DEVICE);
}
}
--
1.7.7
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