USB GADGET/PERIPHERAL: g_file_storage Bulk-Only Transport compliance
Gadget can tell controller driver to ignore Clear-Feature(HALT_ENDPOINT) This API change enables future support for Bulk-Only Transport compliance Signed-off-by: David Lopo <lopo.david@gmail.com> Acked-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -114,6 +114,8 @@ struct usb_ep_ops {
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int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
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int (*dequeue) (struct usb_ep *ep, struct usb_request *req);
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int (*set_halt) (struct usb_ep *ep, int value);
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int (*set_halt) (struct usb_ep *ep, int value);
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int (*set_wedge) (struct usb_ep *ep);
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int (*fifo_status) (struct usb_ep *ep);
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int (*fifo_status) (struct usb_ep *ep);
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void (*fifo_flush) (struct usb_ep *ep);
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void (*fifo_flush) (struct usb_ep *ep);
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};
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};
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@ -348,6 +350,25 @@ static inline int usb_ep_clear_halt(struct usb_ep *ep)
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return ep->ops->set_halt(ep, 0);
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return ep->ops->set_halt(ep, 0);
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}
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}
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/**
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* usb_ep_set_wedge - sets the halt feature and ignores clear requests
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* @ep: the endpoint being wedged
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*
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* Use this to stall an endpoint and ignore CLEAR_FEATURE(HALT_ENDPOINT)
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* requests. If the gadget driver clears the halt status, it will
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* automatically unwedge the endpoint.
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*
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* Returns zero on success, else negative errno.
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*/
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static inline int
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usb_ep_set_wedge(struct usb_ep *ep)
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{
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if (ep->ops->set_wedge)
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return ep->ops->set_wedge(ep);
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else
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return ep->ops->set_halt(ep, 1);
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}
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/**
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/**
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* usb_ep_fifo_status - returns number of bytes in fifo, or error
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* usb_ep_fifo_status - returns number of bytes in fifo, or error
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* @ep: the endpoint whose fifo status is being checked.
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* @ep: the endpoint whose fifo status is being checked.
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