From f198ead21bcb7b03d7bb2cba7ba0f5ad615a3862 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Sat, 27 Aug 2011 15:10:09 +0300 Subject: [PATCH] usb: dwc3: gadget: set request dma to invalid when unmapping if we don't set DMA address to invalid when unmapping, we might fall in a situation where request buffer can't be mapped to DMA again. Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/gadget.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 2ee6714bda4b..4d232c3646cc 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -83,6 +83,7 @@ void dwc3_unmap_buffer_from_dma(struct dwc3_request *req) req->request.length, req->direction ? 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 -- 2.20.1