diff options
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 5cca00a6d09..61800f77dac 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1263,10 +1263,8 @@ static void hcd_free_coherent(struct usb_bus *bus, dma_addr_t *dma_handle, *dma_handle = 0; } -static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) +void unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb) { - enum dma_data_direction dir; - if (urb->transfer_flags & URB_SETUP_MAP_SINGLE) dma_unmap_single(hcd->self.controller, urb->setup_dma, @@ -1279,6 +1277,17 @@ static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) sizeof(struct usb_ctrlrequest), DMA_TO_DEVICE); + /* Make it safe to call this routine more than once */ + urb->transfer_flags &= ~(URB_SETUP_MAP_SINGLE | URB_SETUP_MAP_LOCAL); +} +EXPORT_SYMBOL_GPL(unmap_urb_setup_for_dma); + +void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) +{ + enum dma_data_direction dir; + + unmap_urb_setup_for_dma(hcd, urb); + dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; if (urb->transfer_flags & URB_DMA_MAP_SG) dma_unmap_sg(hcd->self.controller, @@ -1303,10 +1312,10 @@ static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) dir); /* Make it safe to call this routine more than once */ - urb->transfer_flags &= ~(URB_SETUP_MAP_SINGLE | URB_SETUP_MAP_LOCAL | - URB_DMA_MAP_SG | URB_DMA_MAP_PAGE | + urb->transfer_flags &= ~(URB_DMA_MAP_SG | URB_DMA_MAP_PAGE | URB_DMA_MAP_SINGLE | URB_MAP_LOCAL); } +EXPORT_SYMBOL_GPL(unmap_urb_for_dma); static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) |