X-Git-Url: https://git.kernel.dk/?a=blobdiff_plain;f=drivers%2Fusb%2Fgadget%2Fudc%2Fmv_u3d_core.c;h=6f3be0ba9ac8176438a9251b56e0a405a7876f3f;hb=6ffd65154e23a4cf5d2da400e0fa7142a4474b98;hp=b9e19a5913224be4fca62cbc03d93de1cb4c2701;hpb=fc93ff608b15ae32cde3006b7af860b59cac20ec;p=linux-2.6-block.git

diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c
index b9e19a591322..6f3be0ba9ac8 100644
--- a/drivers/usb/gadget/udc/mv_u3d_core.c
+++ b/drivers/usb/gadget/udc/mv_u3d_core.c
@@ -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;
 	}