From 0a577b823d0202b94eeef0e6b2b5653527fd6134 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Sat, 27 Oct 2012 21:44:16 +0100 Subject: [PATCH] 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 Signed-off-by: Greg Kroah-Hartman --- drivers/staging/comedi/comedidev.h | 9 +++++++-- 1 file 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 #include #include +#include #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); -- 2.39.2