---

yaml --- r: 174929 b: refs/heads/master c: 85e034f h: refs/heads/master i: 174927: 74b96e0 v: v3
git-mirror · Dec 11, 2009 · 9f1dff4 · 9f1dff4
1 parent c74ccc7
commit 9f1dff4
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Showing 2 changed files with 11 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 796c8c78801ebf1bdebddda06a43276355ff91eb
+refs/heads/master: 85e034fdff2af6befc55904f3ab9cc5aa31be8fe
diff --git a/trunk/drivers/usb/core/hcd.c b/trunk/drivers/usb/core/hcd.c
@@ -1275,13 +1275,16 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
 
 	if (usb_endpoint_xfer_control(&urb->ep->desc)
 	    && !(urb->transfer_flags & URB_NO_SETUP_DMA_MAP)) {
-		if (hcd->self.uses_dma)
+		if (hcd->self.uses_dma) {
 			urb->setup_dma = dma_map_single(
 					hcd->self.controller,
 					urb->setup_packet,
 					sizeof(struct usb_ctrlrequest),
 					DMA_TO_DEVICE);
-		else if (hcd->driver->flags & HCD_LOCAL_MEM)
+			if (dma_mapping_error(hcd->self.controller,
+						urb->setup_dma))
+				return -EAGAIN;
+		} else if (hcd->driver->flags & HCD_LOCAL_MEM)
 			ret = hcd_alloc_coherent(
 					urb->dev->bus, mem_flags,
 					&urb->setup_dma,
@@ -1293,13 +1296,16 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb,
 	dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE;
 	if (ret == 0 && urb->transfer_buffer_length != 0
 	    && !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP)) {
-		if (hcd->self.uses_dma)
+		if (hcd->self.uses_dma) {
 			urb->transfer_dma = dma_map_single (
 					hcd->self.controller,
 					urb->transfer_buffer,
 					urb->transfer_buffer_length,
 					dir);
-		else if (hcd->driver->flags & HCD_LOCAL_MEM) {
+			if (dma_mapping_error(hcd->self.controller,
+						urb->transfer_dma))
+				return -EAGAIN;
+		} else if (hcd->driver->flags & HCD_LOCAL_MEM) {
 			ret = hcd_alloc_coherent(
 					urb->dev->bus, mem_flags,
 					&urb->transfer_dma,