usb: gadget: Add NO_DMA dummies for DMA mapping API (1f674e16) · Commits · 戴 / test

Add dummies for usb_gadget_{,un}map_request{,_by_dev}(), to allow compile-testing if NO_DMA=y. This prevents the following from showing up later: ERROR: "usb_gadget_unmap_request_by_dev" [drivers/usb/renesas_usbhs/renesas_usbhs.ko] undefined! ERROR: "usb_gadget_map_request_by_dev" [drivers/usb/renesas_usbhs/renesas_usbhs.ko] undefined! ERROR: "usb_gadget_map_request" [drivers/usb/mtu3/mtu3.ko] undefined! ERROR: "usb_gadget_unmap_request" [drivers/usb/mtu3/mtu3.ko] undefined! ERROR: "usb_gadget_map_request" [drivers/usb/gadget/udc/renesas_usb3.ko] undefined! ERROR: "usb_gadget_unmap_request" [drivers/usb/gadget/udc/renesas_usb3.ko] undefined! Signed-off-by:

Geert Uytterhoeven <geert@linux-m68k.org> Reviewed-by:

Mark Brown <broonie@kernel.org> Acked-by:

Felipe Balbi <felipe.balbi@linux.intel.com> Acked-by:

Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by:

Robin Murphy <robin.murphy@arm.com> Signed-off-by:

Christoph Hellwig <hch@lst.de>

include/linux/usb/gadget.h

+12 −0

Original line number	Diff line number	Diff line
		@@ -805,6 +805,7 @@ 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,
		@@ -814,6 +815,17 @@ 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 */

		/-------------------------------------------------------------------------/

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