tree 0c4711947fd75fdaf88df0aef5b85ca23d453496
parent 5b20a028faa15477dcd195c85173bb118eb23b3d
author Stephen Hemminger <stephen@networkplumber.org> 1431620353 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1432493715 -0700

uio: don't free irq that was not requested

UIO base driver should only free_irq that it has requested.
UIO supports drivers without interrupts (irq == 0) or custom handlers.

This fixes warnings like:

WARNING: CPU: 1 PID: 5478 at kernel/irq/manage.c:1244 __free_irq+0xa9/0x1e0()
Trying to free already-free IRQ 0

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>