On Tuesday, May 06, 2014 5:12 AM, Ian Abbott wrote: > For comedi subdevices that support asynchronous commands, the `async` > member of `struct comedi_subdevice` points to a `struct comedi_async` > allocated to manage asynchronous commands on that subdevice. The > pointer to this "async" structure is passed around by various functions > and some of those functions need to get back to the "subdevice" > structure from this pointer, so the "async" structure has a `subdevice` > member pointing back to the `struct comedi_subdevice`. > > Since we can always get to the "async" structure from the "subdevice" > structure, we can just pass around the pointer to the subdevice instead > of the pointer to the async structure. Then the `subdevice` member of > `struct comedi_async` is no longer required and can be removed. > > v2: Rebased to current staging-next due to merge conflicts. The first > two patches from v1 have already been applied, so the ordinals of > the remaining patches have been shuffled down two places. Reviewed-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx> _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
