---

yaml --- r: 316997 b: refs/heads/master c: fe2072c h: refs/heads/master i: 316995: 3cd1de2 v: v3
git-mirror · Jul 9, 2012 · e26ab66 · e26ab66
1 parent 378af3a
commit e26ab66
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Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: c5cf9212a368d88fe1e25797699b167f6daa64a5
+refs/heads/master: fe2072cc1768b0f979195acf19b8ccd381e541c3
diff --git a/trunk/drivers/usb/core/hcd.c b/trunk/drivers/usb/core/hcd.c
@@ -1398,7 +1398,15 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
 	    && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {
 		if (hcd->self.uses_dma) {
 			if (urb->num_sgs) {
-				int n = dma_map_sg(
+				int n;
+
+				/* We don't support sg for isoc transfers ! */
+				if (usb_endpoint_xfer_isoc(&urb->ep->desc)) {
+					WARN_ON(1);
+					return -EINVAL;
+				}
+
+				n = dma_map_sg(
 						hcd->self.controller,
 						urb->sg,
 						urb->num_sgs,