diff options
Diffstat (limited to 'include/linux/usb')
| -rw-r--r-- | include/linux/usb/gadget.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h index e3424234b23a..847f423ad9b3 100644 --- a/include/linux/usb/gadget.h +++ b/include/linux/usb/gadget.h @@ -806,6 +806,7 @@ int usb_otg_descriptor_init(struct usb_gadget *gadget, /* utility to simplify map/unmap of usb_requests to/from DMA */ +#ifdef CONFIG_HAS_DMA extern int usb_gadget_map_request_by_dev(struct device *dev, struct usb_request *req, int is_in); extern int usb_gadget_map_request(struct usb_gadget *gadget, @@ -815,6 +816,17 @@ extern void usb_gadget_unmap_request_by_dev(struct device *dev, struct usb_request *req, int is_in); extern void usb_gadget_unmap_request(struct usb_gadget *gadget, struct usb_request *req, int is_in); +#else /* !CONFIG_HAS_DMA */ +static inline int usb_gadget_map_request_by_dev(struct device *dev, + struct usb_request *req, int is_in) { return -ENOSYS; } +static inline int usb_gadget_map_request(struct usb_gadget *gadget, + struct usb_request *req, int is_in) { return -ENOSYS; } + +static inline void usb_gadget_unmap_request_by_dev(struct device *dev, + struct usb_request *req, int is_in) { } +static inline void usb_gadget_unmap_request(struct usb_gadget *gadget, + struct usb_request *req, int is_in) { } +#endif /* !CONFIG_HAS_DMA */ /*-------------------------------------------------------------------------*/ |