method associates a description with an active interrupt handler.
parameter must be the value returned by a successful call to
for the interrupt
function is a simple wrapper around
As a convenience,
allows the caller to use
style formatting to build the description string using
When an interrupt handler is established by
the handler is named after the device the handler is established for.
This name is then used in various places such as interrupt statistics
For devices that use a single interrupt,
the device name is sufficiently unique to identify the interrupt handler.
However, for devices that use multiple interrupts it can be useful to
distinguish the interrupt handlers.
When a description is set for an active interrupt handler,
a colon followed by the description is appended to the device name to form
the interrupt handler name.