staging: dgnc: introduce the dgnc_free_irq()

The dgnc_free_irq() will free the requested IRQ from
the dgnc_request_irq().

Signed-off-by: Daeseok Youn <daeseok.youn@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Daeseok Youn 2016-09-26 09:45:14 +09:00 • committed by Greg Kroah-Hartman
commit 5897914f0a