diff options
| author | Ian Abbott <abbotti@mev.co.uk> | 2012-10-27 21:44:16 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-29 15:02:08 -0700 |
| commit | 0a577b823d0202b94eeef0e6b2b5653527fd6134 (patch) | |
| tree | d3f201a351fd9f0700fac5bf716210418fcf6c20 | |
| parent | d5121914a22c22d849abb57d086fe408c9ca2c0c (diff) | |
staging: comedi: add comedi to usb interface helper
Add inline helper function `comedi_to_usb_interface()` to get the
pointer to `struct usb_interface` associated with the comedi device.
This pointer is set by the call to `comedi_usb_auto_config()`.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/staging/comedi/comedidev.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 2b884a6e0287..4ac2de43cdbb 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -41,6 +41,7 @@ #include <linux/io.h> #include <linux/timer.h> #include <linux/pci.h> +#include <linux/usb.h> #include "comedi.h" @@ -193,8 +194,6 @@ struct comedi_async { unsigned int x); }; -struct usb_interface; - struct comedi_driver { struct comedi_driver *next; @@ -457,6 +456,12 @@ static inline struct pci_dev *comedi_to_pci_dev(struct comedi_device *dev) return dev->hw_dev ? to_pci_dev(dev->hw_dev) : NULL; } +static inline struct usb_interface * +comedi_to_usb_interface(struct comedi_device *dev) +{ + return dev->hw_dev ? to_usb_interface(dev->hw_dev) : NULL; +} + int comedi_buf_put(struct comedi_async *async, short x); int comedi_buf_get(struct comedi_async *async, short *x); |