NAME
sysdev_driver_register - Register auxillary driver
SYNOPSIS
int sysdev_driver_register (struct sysdev_class * cls,
struct sysdev_driver * drv);
ARGUMENTS
cls Device class driver belongs to.
drv Driver.
DESCRIPTION
If cls is valid, then drv is inserted into cls->drivers to be called on
each operation on devices of that class. The refcount of cls is
incremented. Otherwise, drv is inserted into sysdev_drivers, and called
for each device.