From bb7ea2841e9c8669ac31e4262f585729bf779bff Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Thu, 8 Sep 2011 18:16:21 +0300 Subject: [PATCH] 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 --- drivers/usb/dwc3/gadget.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 6c64c7385314..2ea2fc86390d 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); } } -- 2.20.1