Debug shared IRQ handlers


Linux Kernel Configuration
└─>Kernel hacking
└─>Debug shared IRQ handlers
In linux kernel since version 2.6.21 (release Date: 2007-04-25)  
Enable this to generate a spurious interrupt just before a shared
interrupt handler is deregistered (generating one when registering
is currently disabled). Drivers need to handle this correctly. Some
don't and need to be caught.