diff options
Diffstat (limited to 'drivers/usb/core/hcd.c')
| -rw-r--r-- | drivers/usb/core/hcd.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index e935f71d7a34..24765fd6cf12 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1262,7 +1262,7 @@ static void hcd_free_coherent(struct usb_bus *bus, dma_addr_t *dma_handle, *dma_handle = 0; } -void unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb) +void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb) { if (urb->transfer_flags & URB_SETUP_MAP_SINGLE) dma_unmap_single(hcd->self.controller, @@ -1279,13 +1279,21 @@ void unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb) /* 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); +EXPORT_SYMBOL_GPL(usb_hcd_unmap_urb_setup_for_dma); -void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) +static void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) +{ + if (hcd->driver->unmap_urb_for_dma) + hcd->driver->unmap_urb_for_dma(hcd, urb); + else + usb_hcd_unmap_urb_for_dma(hcd, urb); +} + +void usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) { enum dma_data_direction dir; - unmap_urb_setup_for_dma(hcd, urb); + usb_hcd_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) @@ -1314,11 +1322,20 @@ void unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) 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); +EXPORT_SYMBOL_GPL(usb_hcd_unmap_urb_for_dma); static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) { + if (hcd->driver->map_urb_for_dma) + return hcd->driver->map_urb_for_dma(hcd, urb, mem_flags); + else + return usb_hcd_map_urb_for_dma(hcd, urb, mem_flags); +} + +int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, + gfp_t mem_flags) +{ enum dma_data_direction dir; int ret = 0; @@ -1410,10 +1427,11 @@ static int map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, } if (ret && (urb->transfer_flags & (URB_SETUP_MAP_SINGLE | URB_SETUP_MAP_LOCAL))) - unmap_urb_for_dma(hcd, urb); + usb_hcd_unmap_urb_for_dma(hcd, urb); } return ret; } +EXPORT_SYMBOL_GPL(usb_hcd_map_urb_for_dma); /*-------------------------------------------------------------------------*/ |