RE: My vision of usbmon

["Chad Kitching" <CKitching@powerlandcomputers.com>]

> -----Original Message-----
> From: Greg KH [mailto:greg@kroah.com]
> Sent: December 21, 2004 11:11 PM
> Subject: Re: My vision of usbmon
> 
> -/* exported only within usbcore */
> -struct usb_bus *usb_bus_get (struct usb_bus *bus)
> +struct usb_bus *usb_bus_get(struct usb_bus *bus)
>  {
> -	struct class_device *tmp;
> -
> -	if (!bus)
> -		return NULL;
> -
> -	tmp = class_device_get(&bus->class_dev);
> -	if (tmp)        
> -		return to_usb_bus(tmp);
> -	else
> -		return NULL;
> +	if (bus)
> +		class_device_get(&bus->class_dev);
> +	return bus; 
>  }
> +EXPORT_SYMBOL_GPL(usb_bus_get);
  
I'm not familiar with this code, but if the replacement code is 
equivalent, is there any point to the return usb_bus pointer?  With 
the replacement, you should always get the same pointer you put 
into it.  If that is the case, why not remove the return value, and 
change drivers/usb/core/usb.c to match?

Chad Kitching