diff options
| author | H Hartley Sweeten <hsweeten@visionengravers.com> | 2013-05-20 14:20:02 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-05-21 10:59:10 -0700 |
| commit | 61dd149b102d00cea3815a161e07cd41fcc0d737 (patch) | |
| tree | c7ad72bb346799ce63114d8e420e3a231570af3c | |
| parent | 4422a6c14d0d0bfe519ec487693f1787f64b0b90 (diff) | |
| download | linux-61dd149b102d00cea3815a161e07cd41fcc0d737.tar.bz2 | |
staging: comedi: introduce comedi_to_usb_dev()
Introduce a helper function to get a usb_device pointer from a
comedi_device pointer.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/comedi/comedi_usb.c | 12 | ||||
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 1 |
2 files changed, 13 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedi_usb.c b/drivers/staging/comedi/comedi_usb.c index b72da7910808..13f18bef6091 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 a31915f1af65..ab926a6654ef 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); |