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authorFelipe Balbi <balbi@ti.com>2011-09-08 18:16:21 +0300
committerFelipe Balbi <balbi@ti.com>2011-09-09 13:05:26 +0300
commitbb7ea2841e9c8669ac31e4262f585729bf779bff (patch)
tree16e8eab49bf4c834c587b40f7bfbef5986e2f021 /drivers/usb/dwc3
parent771f184ecebf34929a849eaa707aa463234254f7 (diff)
downloadop-kernel-dev-bb7ea2841e9c8669ac31e4262f585729bf779bff.zip
op-kernel-dev-bb7ea2841e9c8669ac31e4262f585729bf779bff.tar.gz
usb: dwc3: gadget: drop the useless dma_sync_single* calls
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@ti.com>
Diffstat (limited to 'drivers/usb/dwc3')
-rw-r--r--drivers/usb/dwc3/gadget.c9
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);
}
}
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