Introduce a helper function to get a usb_device pointer from a comedi_device pointer.
Signed-off-by: H Hartley Sweeten <[email protected]> Cc Ian Abbott <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> --- drivers/staging/comedi/comedi_usb.c | 12 ++++++++++++ drivers/staging/comedi/comedidev.h | 1 + 2 files changed, 13 insertions(+) diff --git a/drivers/staging/comedi/comedi_usb.c b/drivers/staging/comedi/comedi_usb.c index b72da79..13f18be 100644 --- a/drivers/staging/comedi/comedi_usb.c +++ b/drivers/staging/comedi/comedi_usb.c @@ -31,6 +31,18 @@ struct usb_interface *comedi_to_usb_interface(struct comedi_device *dev) EXPORT_SYMBOL_GPL(comedi_to_usb_interface); /** + * comedi_to_usb_dev() - comedi_device pointer to usb_device pointer. + * @dev: comedi_device struct + */ +struct usb_device *comedi_to_usb_dev(struct comedi_device *dev) +{ + struct usb_interface *intf = comedi_to_usb_interface(dev); + + return intf ? interface_to_usbdev(intf) : NULL; +} +EXPORT_SYMBOL_GPL(comedi_to_usb_dev); + +/** * comedi_usb_auto_config() - Configure/probe a comedi USB driver. * @intf: usb_interface struct * @driver: comedi_driver struct diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index a31915f..ab926a6 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -491,6 +491,7 @@ struct usb_driver; struct usb_interface; struct usb_interface *comedi_to_usb_interface(struct comedi_device *); +struct usb_device *comedi_to_usb_dev(struct comedi_device *); int comedi_usb_auto_config(struct usb_interface *, struct comedi_driver *, unsigned long context); -- 1.8.1.4 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
