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usb: dwc3: unmap the proper number of sg entries 

num_sgs contains the number of sgs assigned by the gadget.
num_mapped_sgs contains the number of mapped sgs which may differ from
the gadget's values. For dma_unmap_sg() we have to provide the value
which was returned by dma_map_sg().

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior 2012-01-24 12:44:34 +01:00 committed by Felipe Balbi
parent 24307caef4
commit c09d6b51d7
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/dwc3/gadget.c
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@ -101,7 +101,7 @@ void dwc3_unmap_buffer_from_dma(struct dwc3_request *req)
if (req->request.num_mapped_sgs) {
req->request.dma = DMA_ADDR_INVALID;
dma_unmap_sg(dwc->dev, req->request.sg,
req->request.num_sgs,
req->request.num_mapped_sgs,
req->direction ? DMA_TO_DEVICE
: DMA_FROM_DEVICE);