Commit 6ffd6515 authored Nov 03, 2016 by Alexey Khoroshilov Committed by Felipe Balbi Nov 08, 2016

usb: gadget: mv_u3d: add check for dma mapping error



mv_u3d_req_to_trb() does not check for dma mapping errors.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

parent 5eb30ced

drivers/usb/gadget/udc/mv_u3d_core.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -462,6 +462,12 @@ static int mv_u3d_req_to_trb(struct mv_u3d_req *req)
		req->trb_head->trb_hw,
		trb_num * sizeof(*trb_hw),
		DMA_BIDIRECTIONAL);
		if (dma_mapping_error(u3d->gadget.dev.parent,
		req->trb_head->trb_dma)) {
		kfree(req->trb_head->trb_hw);
		kfree(req->trb_head);
		return -EFAULT;
		}

		req->chain = 1;
		}