staging: comedi: comedi_usb: allow comedi usb drivers to pass a 'context'

Allow the comedi usb drivers to pass a 'context' from their (*probe)
functions to the comedi core's comedi_usb_auto_config(). This 'context'
is then passed to comedi_auto_config() and then to the comedi_driver's
(*auto_attach).

Signed-off-by: H Hartley Sweeten <[e-mail]>
Cc: Ian Abbott <[e-mail]>
Signed-off-by: Greg Kroah-Hartman <[e-mail]>

drivers/staging/comedi/comedi_usb.c

···
  * comedi_usb_auto_config() - Configure/probe a comedi USB driver.
  * @intf: usb_interface struct
  * @driver: comedi_driver struct
+ * @context: driver specific data, passed to comedi_auto_config()
  *
  * Typically called from the usb_driver (*probe) function.
  */
 int comedi_usb_auto_config(struct usb_interface *intf,
-			   struct comedi_driver *driver)
+			   struct comedi_driver *driver,
+			   unsigned long context)
 {
-	return comedi_auto_config(&intf->dev, driver, 0);
+	return comedi_auto_config(&intf->dev, driver, context);
 }
 EXPORT_SYMBOL_GPL(comedi_usb_auto_config);
 

drivers/staging/comedi/comedidev.h

···
 
 struct usb_interface *comedi_to_usb_interface(struct comedi_device *);
 
-int comedi_usb_auto_config(struct usb_interface *, struct comedi_driver *);
+int comedi_usb_auto_config(struct usb_interface *, struct comedi_driver *,
+			   unsigned long context);
 void comedi_usb_auto_unconfig(struct usb_interface *);
 
 int comedi_usb_driver_register(struct comedi_driver *, struct usb_driver *);

drivers/staging/comedi/drivers/usbdux.c

···
 			"Could not upload firmware (err=%d)\n", ret);
 		goto out;
 	}
-	comedi_usb_auto_config(uinterf, &usbdux_driver);
+	comedi_usb_auto_config(uinterf, &usbdux_driver, 0);
  out:
 	release_firmware(fw);
 }

drivers/staging/comedi/drivers/usbduxfast.c

···
 		goto out;
 	}
 
-	comedi_usb_auto_config(uinterf, &usbduxfast_driver);
+	comedi_usb_auto_config(uinterf, &usbduxfast_driver, 0);
  out:
 	release_firmware(fw);
 }

drivers/staging/comedi/drivers/usbduxsigma.c

···
 			"Could not upload firmware (err=%d)\n", ret);
 		goto out;
 	}
-	comedi_usb_auto_config(uinterf, &usbduxsigma_driver);
+	comedi_usb_auto_config(uinterf, &usbduxsigma_driver, 0);
 out:
 	release_firmware(fw);
 }

drivers/staging/comedi/drivers/vmk80xx.c

···
 
 	mutex_unlock(&glb_mutex);
 
-	comedi_usb_auto_config(intf, &vmk80xx_driver);
+	comedi_usb_auto_config(intf, &vmk80xx_driver, id->driver_info);
 
 	return 0;