Commit 23fd537c authored Aug 24, 2016 by Felipe Balbi

usb: gadget: udc: core: don't starve DMA resources



Always unmap all SG entries as required by DMA API

Fixes: a698908d ("usb: gadget: add generic map/unmap request utilities")
Cc: <stable@vger.kernel.org> # v3.4+
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

parent 511a36d2

drivers/usb/gadget/udc/core.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -827,7 +827,7 @@ void usb_gadget_unmap_request_by_dev(struct device *dev,
		return;

		if (req->num_mapped_sgs) {
		dma_unmap_sg(dev, req->sg, req->num_mapped_sgs,
		dma_unmap_sg(dev, req->sg, req->num_sgs,
		is_in ? DMA_TO_DEVICE : DMA_FROM_DEVICE);

		req->num_mapped_sgs = 0;