usb: only set URB_NO_TRANSFER_DMA_MAP when dma is enabled
usb_sg_init() currently sets URB_NO_TRANSFER_DMA_MAP even if dma isn't
enabled. This patch changes the code so URB_NO_TRANSFER_DMA_MAP gets
set only when dma is enabled and transfer_dma is valid.
Signed-off-by: Magnus Damm <damm@xxxxxxxxxx>
---
drivers/usb/core/message.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- 0001/drivers/usb/core/message.c
+++ work/drivers/usb/core/message.c 2008-01-13 18:53:13.000000000 +0900
@@ -394,7 +394,7 @@ int usb_sg_init (
if (!io->urbs)
goto nomem;
- urb_flags = URB_NO_TRANSFER_DMA_MAP | URB_NO_INTERRUPT;
+ urb_flags = URB_NO_INTERRUPT;
if (usb_pipein (pipe))
urb_flags |= URB_SHORT_NOT_OK;
@@ -432,6 +432,7 @@ int usb_sg_init (
* to prevent stale pointers and to help spot bugs.
*/
if (dma) {
+ io->urbs[i]->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
io->urbs [i]->transfer_dma = sg_dma_address (sg + i);
len = sg_dma_len (sg + i);
#if defined(CONFIG_HIGHMEM) || defined(CONFIG_GART_IOMMU)
-------------------------------------------------------------------------
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