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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>
This commit is contained in:
Felipe Balbi 2011-09-08 18:16:21 +03:00
parent 771f184ece
commit bb7ea2841e
1 changed files with 0 additions and 9 deletions
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9
drivers/usb/dwc3/gadget.c
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@ -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);
}
}