On Tue, 21 Mar 2017, Steven Rostedt wrote:
> > /*
> > * Disable interrupts so we don't get the IRQ line bouncing
>
> I'm nervous about the above comment, which in full is:
>
> /*
> * Disable interrupts so we don't get the IRQ line bouncing
> * up and down while interrupts are disabled.
> */
>
> I'm not sure if disabling interrupts helps on an SMP system. This patch
> does change what happens when port->sysrq is set. But I'm not sure we
> care.
It disables interrupts at the device level which obviously helps whether on
SMP or not.
Thanks,
tglx
