From a8ef36bc0a5fe973bddaa54a5a07cda29e04a602 Mon Sep 17 00:00:00 2001 From: Sarah Bailey Date: Sat, 23 Dec 2006 23:14:58 -0800 Subject: [PATCH] USB: Add usb_endpoint_xfer_control to usb.h Added a function to check if an endpoint is a control endpoint. There were similar functions for bulk, interrupt, and isoc, but not for control endpoints. Signed-off-by: Sarah Bailey Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/include/linux/usb.h b/include/linux/usb.h index 3cb9285df2d1..1c56386de709 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -556,6 +556,18 @@ static inline int usb_endpoint_xfer_bulk(const struct usb_endpoint_descriptor *e USB_ENDPOINT_XFER_BULK); } +/** + * usb_endpoint_xfer_control - check if the endpoint has control transfer type + * @epd: endpoint to be checked + * + * Returns true if the endpoint is of type control, otherwise it returns false. + */ +static inline int usb_endpoint_xfer_control(const struct usb_endpoint_descriptor *epd) +{ + return ((epd->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) == + USB_ENDPOINT_XFER_CONTROL); +} + /** * usb_endpoint_xfer_int - check if the endpoint has interrupt transfer type * @epd: endpoint to be checked -- 2.20.1